[Botany • 2024] Polylepis rocio-rojasii (Rosaceae) • A New Species from the Bosque de Proteccion Pui-Pui, Peru

 

Polylepis rocio-rojasii

  

in Gamarra et Valdivia, 2024.

 DOI: 10.11646/phytotaxa.655.1.8

 

Abstract

A new species of Polylepis (Rosaceae) from the Humid Puna of the Bosque de Proteccion Pui-Pui in Junin, Peru, is described and illustrated. The new species was found at 3800 m elevation, in small patches or forest relicts of the natural protected area, growing in open areas highly exposed to wind and abundant fog, along with other shrubby species, mainly Chusquea tessellata (Poaceae). It is very similar to Polylepis canoi but differs by trifoliolate leaves with larger leaflets, lanuginose abaxially, and rounded to ovoid achenes, smaller than those of P. canoi. We also present details on its geographic distribution, ecological notes, and an assessment of the conservation status of the new species.

Exfoliating rhytidomes, Geological formations, National Service of Protected Natural Areas, Tropical Andes, Sericeaee, Sericeus, Stipular sheath, Eudicots

Polylepis rocio-rojasii

Luis Valenzuela Gamarra and María Isabel Villalba Valdivia. 2024. A New Species of Polylepis (Rosaceae) from the Bosque de Proteccion Pui-Pui, Peru.  Phytotaxa. 655(1); 97-104. DOI: 10.11646/phytotaxa.655.1.8

[Botany • 2023] Prunus quanzhouensis (Prunus subg. Cerasus, Rosaceae ) • A New Species from northeastern Guangxi, China

 Prunus quanzhouensis Jian L. Li, S.H. Liang & R.H. Jiang, 

in Liang, Qin, Huang, Tang, Zhang, C. Li, He, Jiang et J.-L. Li. 2023.

DOI: 10.11646/phytotaxa.622.4.2

 

Abstract

Prunus quanzhouensis is a new species of Rosaceae discovered in Guangxi, China, which is here described and illustrated. Despite its morphological similarities to P. campanulata, P. conradinae and P. xueluoensis, it can be distinguished from them by being shrubs or small trees, with 1.5–3.0 m tall, leaves with 10–13 pairs of lateral veins, abaxially glabrous involucral bracts, adaxially appressed villous bracts, flowers measuring 1–1.2 cm in diameter, tubular hypanthium with about 9×3 mm, oblique sepals, 30–35 stamens, and a style that is villous and longer than the stamens. Less than six populations of this new species have been found in the type locality, with approximately 130 mature individuals, which accounted for more than 95% of the total population. Based on direct observation in the field and the IUCN Red List Categories and Criteria, P. quanzhouensis is classified as Endangered (EN).

Eudicots, Endangered, new species, Quanzhou Tianhu National Wetland Park, systematics, taxonomy

全州樱花 

Prunus quanzhouensis Jian L. Li, S.H. Liang & R.H. Jiang

Sheng-Hua Liang, Bo Qin, Yao-Heng Huang, Li-Ming Tang, Zhan-Jiang Zhang, Cui Li, Ying-Hui He, Ri-Hong Jiang and Jian-Ling Li. 2023. Prunus quanzhouensis: a newly discovered species of Prunus subgen. Cerasus (Rosaceae) from northeastern Guangxi, China.  Phytotaxa. 622(4); 252-259. DOI: 10.11646/phytotaxa.622.4.2

www.gxlky.com.cn/g/7478.html

[Botany • 2023] Cotoneaster densiflorus (Rosaceae) • A New Species from western Sichuan, China

Cotoneaster densiflorus M.W. Li, Q. Fan & W. B. Liao, 
 

in Li, Li, Lu, Mo, Ding, Chen, Lai, Zhang, Liao et Fan, 2023. 

 DOI: 10.3897/phytokeys.236.111819

Abstract

Cotoneaster densiflorus, a new species of Rosaceae from western Sichuan, China, is described and illustrated. Morphologically, we inferred that the new species belongs to Cotoneaster Ser. Salicifolii sensu Yü et al. (1974) in the Flora of China and Fryer and Hylmö (2009). This species is most similar to C. salicifolius, but differs in its leaf blade of ovate-lanceolate to obovate shape (vs. elliptic-oblong to ovate-lanceolate), smaller length-width ratio of 2.37 ± 0.31 (vs. 3.17 ± 0.32), slightly conduplicate (vs. not conduplicate), less lateral veins of 6–8 pairs (vs. 12–16 pairs), upper surface slightly rugose (vs. rugose), leaf margin plane (vs. revolute), lower surface densely grey tomentose (vs. grey tomentose, with bloom), greater corolla diameter of 7–9 mm (vs. 5–6 mm), styles 2 (vs. 2–3), pyrenes 2 (vs. 2–3), larger pollen grains P/E values of 2.05 ± 0.12 (vs. 1.19 ± 0.05) and leaf epidermis type W (vs. type I). Based on phylogenetic analysis of the whole chloroplast genome, C. densiflorus is sister to C. rhytidophyllus, but distantly related to C. salicifolius.

Key words: Anatomical, chloroplast genome, leaf epidermis, palynological, Ser. Salicifolii

Cotoneaster densiflorus sp. nov.
A habit B leaf, adaxial surface C leaf, abaxial surface D flowers E vertical section of flower F petals G stamens H styles I fruiting branch J pome K transverse section of pome L pyrenes.

Illustration by Zhengmeng Yang based on living field-collected materials (Q. Fan & M.W. Li 14925, M.W. Li 20230617007).

Cotoneaster densiflorus sp. nov.
A habitat B habit C branchlets D petal, stamen, style, and vertical section of flower E ovate-lanceolate to obovate shape of leaves F leaf, abaxial surface G 2 pyrenes per fruit H inflorescence I fruiting branch.

 Cotoneaster densiflorus M.W. Li, Q. Fan & W. B. Liao, sp. nov.

 

Diagnosis: Morphologically, Cotoneaster densiflorus is similar to C. salicifolius, but differs in its leaf blade of ovate-lanceolate to obovate shape (vs. elliptic-oblong to ovate-lanceolate), smaller length-width ratio of 2.37 ± 0.31 (vs. 3.17 ± 0.32), slightly conduplicate (vs. not conduplicate), fewer lateral veins of 6–8 pairs (vs. 12–16 pairs), upper surface slightly rugose (vs. rugose), leaf margin plane (vs. revolute), lower surface densely grey tomentose (vs. grey tomentose, with bloom), greater corolla diameter of 7–9 mm (vs. 5–6 mm), styles 2 (vs. 2–3) and pyrenes 2 (rarely 3). Although there is a closer phylogenetic relationship between the new species and C. rhytidophyllus, it is easy to distinguish them by the indumentum color of branchlets, leaves and inflorescences, rugose leaf upper surface, fruit shape and pyrenes number. See Table 2, Figs 1, 2 for a detailed comparison.

Etymology: The specific epithet refers to the compact compound corymbs with (5–)10– to 50–(61)-flowered per inflorescence.

Mingwan Li, Dan Li, Mengfei Lu, Shuangfeng Mo, Shen Ding, Yuanyuan Chen, Yong Lai, Dangquan Zhang, Wenbo Liao and Qiang Fan. 2023. A New Species of Cotoneaster (Rosaceae) from western Sichuan, China. PhytoKeys. 236: 39-52. DOI: 10.3897/phytokeys.236.111819

[Botany • 2023] Sorbus erythrosepala (Rosaceae) • A New Species from Yunnan, China

 Sorbus erythrosepala  Kainul., Sjöman & Aldén,

in Kainulainen, Sjöman et Aldén, 2023. 

 sciencepress.mnhn.fr/en/periodiques/Adansonia 

Sorbus erythrosepala sp. nov. from Napa Hai in north-western Yunnan is here described and illustrated. It belongs to the white to crimson fruited Sorbus subgenus Albocarmesinae and is superficially similar to the sympatric Sorbus filipes Hand.-Mazz., but it can be distinguished from that species by the stouter shoots, the larger leaves with pubescent, dull and more numerous leaflets, and in the coloration of the fruits.

KEYWORDS: Rosaceae, Sorbus, rowan, China, Yunnan, new species

 Sorbus erythrosepala sp. nov., photos of cultivated material (KGB 71) at Gothenburg Botanical Garden:
A, flower buds; B, open flowers; C, branch with immature fruits; D, ripe fruits; E, buds; F, shrub in autumn colours with pendulous infructescenses. Photographs: K. Kainulainen.

 

Sorbus erythrosepala Kainul., Sjöman, Aldén, sp. nov.

 

Sorbus erythrosepala sp. nov. is morphologically similar to S. filipes Hand. -Mazz. in having lax inflorescences with pink flowers; longpedunculate and ± pendulous infructescences and white to pink fruits, but it differs from the latter in having leaves that are sparsely pubescent and dull (vs glabrous and glossy), and leaflets that are longer (to c. 35 mm vs c. 20 mm) and more numerous (up to 15 vs 8-13). Furthermore, its mature fruits are usually white (sometimes with pink blotches and usually with pink to crimson calyx lobes) whereas fruits of Sorbus filipes are usually pinkish.

ETYMOLOGY. — The specific epithet refers to the red sepals, which are distinctly contrasting on the otherwise white fruits.

Kent Kainulainen, Henrik Sjöman and Björn Aldén. 2023. Sorbus erythrosepala Kainul., Sjöman, Aldén, sp. nov. (Rosaceae), A New Rowan from Yunnan, China.  ADANSONIA. 45(21); 337-342. 

 sciencepress.mnhn.fr/en/periodiques/Adansonia/45/21

  twitter.com/Publi_MNHN/status/1702306780687008006

  

[Botany • 2023] Rosa funingensis (Rosaceae) • A New Species from Yunnan, China

Rosa funingensis L. Luo & Y.Y. Yang 

Rosa funingensis L. Luo & Y.Y. Yang f. rosea L. Luo & Y.Y. Yang,

in Zheng, Luo, Tang, Yu, Lyu, Liu, Zhang et Yang, 2023.

 DOI: 10.3897/phytokeys.229.101052

Abstract

A new species Rosa funingensis and its variant R. funingensis f. rosea, both collected from Yunnan Province, China, are, for the first time, documented and illustrated in this study. Morphological analysis in comparison with two related species in the wild, R. gigantea and R. rubus, presents distinguishable features through leaf surfaces, inflorescences and the shape of styles. R. funingensis leaf surfaces are abaxially villous, purple-red, pale green when mature, adaxially glabrous, dark green; inflorescences solitary or 2–5(7) in corymbose cyme; and styles connate into a column or not, exserted.

Key words: molecular evidence, morphology, new species, Rosa, wild germplasm

Rosa funingensis and R. funingensis f. rosea
A plant B leaves C stipule D branches and prickles E, F two different Inflorescences G, H two different styles
I–K flowering process of Rosa funingensis
L–N flowering process of R. funingensis f. rosea O, P hips.

 Rosa funingensis L. Luo & Y.Y. Yang, sp. nov.

Diagnosis: Rosa funingensis is mostly similar to R. gigantea. However, Rosa funingensis differs significantly from R. gigantea by having leaves abaxially villous, purple-red, pale green when mature, adaxially glabrous, dark green (vs. both surfaces glabrous), rachis and petiole shortly prickly, glandular hairs and villous (vs. sparsely shortly prickly and glandular pubescent), inflorescences solitary or 3–5(7) in corymbose cyme (vs. solitary or 2 or 3 and fasciculate) and styles connate into a column or not (vs. free) (Table 1).

Etymology: The species epithet refers to Funing County, where the new species was first discovered. The variant with pink flower colour is proposed to be named “Rosa funingensis f. rosea”.

Distribution and habitat: New species are currently known from Funing County, Wenshan Zhuang and Miao Autonomous Prefecture in eastern Yunnan, at elevations between 400 m and 1400 m. They grow on hillsides, roadsides and riversides.

 Rosa funingensis L. Luo & Y.Y. Yang f. rosea L. Luo & Y.Y. Yang, f. nov.

Etymology: The variant with pink flower colour is proposed to be named “Rosa funingensis f. rosea”.

 

Ling-Na Zheng, Le Luo, Yu-Wei Tang, Chao Yu, Pei-Feng Lyu, Xue-Sen Liu, Qi-Xiang Zhang and Yu-Yong Yang. 2023.   Rosa funingensis (Rosaceae), A New Species from Yunnan, China. PhytoKeys. 229: 61-70.  DOI: 10.3897/phytokeys.229.101052

[Botany • 2022] Rubus violaceifrons (Rosaceae) • A New Bramble Species from Bohemia (Central Europe, Czech Republic)

Rubus violaceifrons P. Havlíček, Trávn. & Velebil,

in Havlíček, Trávníček & Velebil, 2022. 

DOI: 10.11646/phytotaxa.568.3.1

 

Abstract

Rubus violaceifrons, a new species from central and north-eastern Bohemia (Czech Republic) is described and illustrated, and its distribution is characterized in detail. We classify it as a member of the series Pallidi of the subgenus Rubus, section Rubus and subsection Hiemales, although its weak specimens partly resemble R. guentheri from ser. Glandulosi. Like all species of R. ser. Pallidi studied so far, R. violaceifrons is tetraploid, as determined using flow cytometry. A detailed morphological comparison of the new bramble species with similar taxa is presented. A determination key including all taxa of the R. ser. Pallidi occurring in the Czech Republic is provided.

Key words: apomictic taxa, batology, ploidy level, taxonomy

Rubus violaceifrons:
a: section of primocane stem with leaf; b: detail of primocane stem indumentum; c: detail of terminal leaflet margin; d: infructescence; e: detail of section of inflorescence axis; f: detail of section of peduncle; g: flower; h: carpel.

Scale bars 1 cm, short – a, d; middle – b–c, e–g; long – h. Del. A. Skoumalová.

Rubus violaceifrons:
A: flowers; B: inflorescence; C: primocane stem with basal part of leaf petiole; D: detail of gynoecium; E: detail of part of inflorescence; F: 4-foliolate primocane leaf; G: 5-foliolate primocane leaf.

Photos J. Velebil.

Rubus violaceifrons P. Havlíček, Trávn. & Velebil, sp. nov. 

Ecology:—Rubus violaceifrons most often grows in margins, clearings and openings of coniferous and mixed woodlands and forest plantations, usually in somewhat shaded places. It is clearly a nemophilous bramble species according to the concept of Weber (1995: 296). It is usually found on permeable, moderately humid to slightly dry soils that neutral to slightly acidic. The elevation range of the species spans from 175 m a.s.l. (Káraný and Nový Vestec villages) to 590 m a.s.l (Otradovice village). 

Distribution:—According to the concept of Weber (1996), Rubus violaceifrons is a “regional” bramble species: the longest diameter of its distribution area is about 150 km (Fig. 4). Currently, it is known from 42 localities dispersed in central and eastern Bohemia in the Czech Republic. The species is possibly an endemic taxon of the country, but it could be found also in southern Poland (particularly in the Kłodzko County or in Silesia). In terms of the grid system of the Atlas Florae Europaeae (for the genus Rubus, see Kurtto et al. 2010), R. violaceifrons is present in the following units: 33UWS4, 33UVR1, 33UVR3, 33UVR4, 33UVQ3, 33UWR1, 33UWR2, 33UWR3, 33UWR4. 

Etymology:—The epithet “violaceifrons” is a reference to the intense colouration of stem parts and their stalked glands, as well as to the very conspicuous red-violet colour of styles in open flowers.

 

Petr Havlíček, Bohumil Trávníček, Jiri Velebil. 2022. Rubus violaceifrons (Rosaceae), A New Bramble Species from Bohemia (Central Europe, Czech Republic). Phytotaxa. 568(3); 241-254. DOI: 10.11646/phytotaxa.568.3.1

[Botany • 2022] Geum rubrum comb. nov. (Rosaceae), elevation of Geum elatum forma rubrum to Species Rank

 Geum rubrum (Ludlow) A. A. Khuroo, K. Hussain & R. Gulzar, 

in Khuroo, Hussain, Gulzar & Ganai, 2022. 

DOI: 10.11646/phytotaxa.541.1.6

Abstract

Geum elatum forma rubrum (Rosaceae) is elevated here to the rank of species, Geum rubrum comb. nov. from the Himalaya. The species differs from the commonly occurring G. elatum in several distinctive characters which include: smaller flower size (2.2–2.8 cm diameter), elliptic or lanceolate pseudo-sepal, glandular hairs on calyx, red petals, dorsifixed stamens, lesser number of carpels (6–8) and achene size (7.8–8.0 × 1.6–1.8 mm). Based on the morphological study of the fresh plant specimens collected from Kashmir Himalaya, here we provide a detailed description of G. rubrum and photographic illustrations of its diagnostic characters. We also provide comparison of distinguishing features of G. rubrum with its closely related G. elatum to facilitate easier field identification.

Keywords: Biodiversity, Flora, Geum, Himalaya, Kashmir, new combination, Taxonomy, Eudicots 

  Geum rubrum.
 A. Habit; B. Flower; C. Sepal; D. Petal;
E. Stamen (2x); F. Carpels (2x); G. Achene.

 Geum rubrum (Ludlow) A. A. Khuroo, K. Hussain & R. Gulzar

Anzar Ahmad Khuroo, Khalid Hussain, Ruquia Gulzar and Mansoor R. Ganai. 2022. Geum rubrum comb. nov. (Rosaceae), elevation of Geum elatum forma rubrum to Species Rank. Phytotaxa. 541(1); 66-72. DOI: 10.11646/phytotaxa.541.1.6

[Botany • 2021] Rubus noricus (Rosaceae) • Hidden on Both Sides of the Alps: A New Species of Bramble from Austria and Germany

 Rubus noricus Hohla, Pagitz & Király

in Hohla, Pagitz & Király, 2021.

DOI: 10.11646/phytotaxa.489.1.1

Rubus ser. Rhamnifolii includes apomictic polyploid species, which occur in north-western and central Europe, with rare outposts to eastern central Europe. A regionally distributed tetraploid species of the series occurring north and south of the Eastern Alps in Austria and Germany, Rubus noricus is described here. The new species is morphologically compared with similar taxa of the series, moreover, comprehensive iconography, data on distribution and ecology are presented.

Keywords: apomixis, biogeography, ecology, postglacial spread, Rubus ser. Rhamnifolii, taxonomy, Eudicots

  Rubus noricus Hohla, Pagitz & Király.
A: section of leafed first-year stem; B: detail of first-year stem; C: margin of terminal leaflet; D: infructescence; E: inflorescence axis; F: peduncle; G: flower; H: petal; I: young carpel. Del. J. Táborská.

 Rubus noricus Hohla, Pagitz & Király.
 A: typical leaf of first-year stem (underside); B: typical leaf of first-year stem (upperside); C: close-up of lower surface of a leaf on first-year stem; D: first-year stem; E: infructescence; F: terminal part of infructescence; G: flowers; H: young collective fruits (with hairy carpels). Austria, Upper Austria, Lochen, Tannberg, July and August 2019, phot. M. Hohla.

Rubus noricus Hohla, Pagitz & Király, sp. nov. 

Etymology:— The epithet “noricus” derives from the former Roman province “Noricum” that approximately covered the eastern Alps and its foregrounds, which overlap well with the species’ distribution area.

Ecology:— Rubus noricus was found in the colline and submontane altitudinal belts from 320 to 600 m above sea level. The species generally grows on slightly acidic (e.g. silicate-rich gravel or granite) to base-rich (e.g. limestone) substrates, on semi-dry to mesic soils, both in natural forest communities (most often in associations of the Fagetalia order), and their derivates (e.g. planted coniferous stands, partly mixed with native deciduous tree species). It prefers half-shady fringes or somewhat opened forest stands, in turn, it avoids exposed sunny sites.

  Michael Hohla, Konrad Pagitz and Gergely Király. 2021. Hidden on Both Sides of the Alps: Rubus noricus, A New Species of Bramble (Rosaceae) from Austria and Germany. Phytotaxa. 489(1); 1–9. DOI: 10.11646/phytotaxa.489.1.1

[Botany • 2021] Eriobotrya shanense (Rosaceae) • A New Broad-leaved Species of Loquat from eastern Myanmar and Its Phylogenetic Affinity in the Genus Eriobotrya

Eriobotrya shanense D.H. Kang, H.G. Ong & Y.D. Kim

in Kang, Ong, Lee, ... et Kim, 2021. 

DOI:  10.11646/phytotaxa.482.3.6

Abstract

Eriobotrya shanense, a new species from the karst region of Shan State, eastern Myanmar, is described and illustrated. This evergreen tree is similar to the autumn and winter-flowering, large-leaved species E. malipoensis and E. japonica by having tomentose hairs on the abaxial leaf surface, but can be distinguished by its obovate, widely obelliptic or oval blade shape, leaf length-width ratio of 2:1 (vs. 3:1), and rounded or obtuse apex (vs. acute). The species also resembles less-known, undercollected Myanmar broad-leaved species E. wardii and E. platyphylla in leaf shape and length-width ratio, but can be easily differentiated by the presence of tomentose hairs on the leaves, and inflorescence. Phylogenetic analysis based on nrDNA ITS region supported its close affinity with E. malipoensis and E. japonica. Molecular data also generally grouped the 17 congeneric taxa accessions in congruence to their leaf morphology, with the entire Eriobotrya clade strongly supported to be monophyletic and separate from Rhaphiolepis.

Keywords: ITS, limestone karst, Panlaung Pyadalin Cave Wildlife Sanctuary, phylogeny, Shan State

Eriobotrya shanense D.H. Kang, H.G. Ong & Y.D. Kim
A. Flowering branch B. Leaf blade C–D. Stipules E. Bract F–G. Flower abaxial and adaxial view H–I. Petals J. Flower longitudinal section showing the androecium and gynoecium K. Stamen L. Styles and exposed ovary M. Ovary cross section N. Fruiting branch O–P. Fruit cross and longitudinal section. A–M. from Kim et al. MM-6026 (holotype HHU). Illustration by Ye-Seul Jang.

Eriobotrya shanense D.H. Kang, H.G. Ong & Y.D. Kim.
A. Habitat B. Stipule and petiole C. Inflorescence D. Flower E. Petals (base not clawed) F. Fruiting branch.

 

Eriobotrya shanense D.H. Kang, H.G. Ong & Y.D. Kim, sp. nov. 

Type:— MYANMAR. Southern Shan State, Ywangan Township, N21° 14’ ...” E96° 25’ ...”, elev. 1,422 m, 01 Jan. 2017, Kim et al. MM-6026 (holotype HHU barcode 880000016009; isotypes HHU barcode 880000016016, KB barcode 880000016023, RAF barcode 880000016030). 

Diagnosis:— Leaf morphology of Eriobotrya shanense is similar to that of E. malipoensis and E. japonica by having tomentose hairs on the abaxial surface of its blade but can be differentiated by its obovate, widely obelliptic or oval blade shape, its length-width ratio of 2:1 (vs. 3:1), and rounded or obtuse apex (vs. acute). The species also resembles less-known, undercollected Myanmar broad-leaved species E. wardii and E. platyphylla in leaf shape and length-width ratio, but can be easily differentiated by the presence of tomentose hairs on the leaves and inflorescence.

 See Table 1 for a detailed comparison. 

Etymology:— Eriobotrya shanense is named after its type locality, Shan State in eastern Myanmar.

Distribution and habitat:— Eriobotrya shanense is known to be narrowly distributed in its type locality, Ywangan Township in southern Shan State. So far, two populations have been found, one consisting of not less than 10 fullgrown trees, and the other of ca. 20 mature and juvenile individuals. The tree grows on slopes of irregularly rocky limestone karst hills, along with Firmiana kerri (Craib) Kostermans (1961: 389), Sterculia villosa Roxburgh (1832: 153, 154), Wightia speciosissima (D. Don) Merrill (1938: 67), Bauhinia variegata Linnaeus (1753: 375), Ceratostigma asperrimum Stapf ex Prain (1906: 6, 7), and Trichodesma calycosum Collett & Hemsley (1890: 92, 93).

Dae-Hyun Kang, Homervergel G. Ong, Jung-Hoon Lee, Eui-Kwon Jung, Naing-Oo Kyaw, Qiang Fan and Young-Dong Kim. 2021. A New Broad-leaved Species of Loquat from eastern Myanmar and Its Phylogenetic Affinity in the Genus Eriobotrya (Rosaceae).  Phytotaxa. 482(3); 279–290. DOI:  10.11646/phytotaxa.482.3.6

[Botany • 2019] Origin of Rosa × binaloudensis (Rosaceae), A New Natural Hybrid Species from Iran

Rosa × binaloudensis 

in Vaezi, Arjmandi & Sharghi, 2019. 

 DOI:  10.11646/phytotaxa.411.1.2

Abstract

Rosa x binaloudensis, a new natural hybrid between R. beggeriana and R. persica is described and characterized after analyzing a set of morphological and molecular data. The putative hybrid with a small population occurs in the mountainous area of northeastern Iran. This taxon resembles R. beggeriana in having white corolla and pinnately compound leaves but its petals have red blotch at the base of each more similar to R. persica. In the morphological study we performed both the univariate and multivariate analyses. Results of Mann-Whitney U test show that among 62 vegetative and floral morphological traits used, 37 (59%) of the hybrid characters are parental-like, 14 (23%) traits are intermediate and 11 (18%) appear to be transgressive (both new and extreme characters). Multivariate analyses (PCoA) generally show that the hybrid is intermediate between its putative parents. In the molecular study we amplified, cloned, and sequenced ribotypes (nuclear rDNA-ITS region) of the hybrid, its putative parents and all members of the subgenus Rosa to detect their possible involvement in the hybridization. In addition to phylogenetic tree reconstruction, due to low molecular resolution among the ITS ribotypes, a phylogenetic network was also provided. Both the phylogenetic tree and haplotype network analysis confirmed the occurrence of the hybridization between the proposed parental species, R. beggeriana and R. persica. By using the chloroplastic trnL-F sequences, our phylogenetic reconstruction revealed that R. persica has played as a maternal role in the hybridization.

Keywords: Rosaceae, hybridization, morphology, molecular phylogeny, network, Eudicots

Rosa x binaloudensis

Jamil Vaezi, Ali Asghar Arjmandi and Hamid Reza Sharghi. 2019. Origin of Rosa x binaloudensis (Rosaceae), A New Natural Hybrid Species from Iran. Phytotaxa. 411(1); 23–38.  DOI:  10.11646/phytotaxa.411.1.2

[Botany • 2019] Sorbus lushanensis (Rosaceae) • A New Species from China

Sorbus lushanensis Xin Chen & Jing Qiu

in Qiu, Zhao, Qi & Chen, 2019. 

DOI: 10.3897/phytokeys.119.32148

Abstract

Sorbus lushanensis Xin Chen & Jing Qiu, sp. n. (Rosaceae), a new simple-leaved species belonging to Sorbus subg. Aria sect. Alnifoliae, is described from Anhui and Jiangxi provinces in China. Illustrations, photographs of wild plants and a distribution map are presented. The new species is morphologically similar to S. folgneri, but can be distinguished easily by its abaxially greenish-grey tomentose leaves, scale-like stipules and glabrous styles.

Keywords: Sorbus, new species, taxonomy, China

Figure 1. Holotype of Sorbus lushanensis sp. n.

Scanned by Xiaochen Zhang. 

Figure 3. Sorbus lushanensis sp. n.
A flower branch and leaves B flower C petal D styles E stamens F fruit G seed.

Drawn by Yuxuan Bao.

Sorbus lushanensis Xin Chen & Jing Qiu, sp. n.

Diagnosis: Sorbus lushanensis is morphologically most similar to S. folgneri (C. K. Schneid.) Rehd., but differs by its leaf blade abaxially greenish-grey tomentose, stipules smaller, pedicels longer, petals larger and styles glabrous.

Figure 2. Sorbus lushanensis sp. n.
A habit (A plant at Wulao Peak, Lushan National Park, Jiangxi province) B flowering branch and leaves (from the plant of type specimen) C young inflorescence (from the same plant as habit). 

Etymology: The name “lushanensis” refers to the type locality, Lushan Mountain, Jiangxi Province, China.

Vernacular name: 庐山花楸 (lu shan hua qiu).

 Jing Qiu, Yang Zhao, Qi Qi and Xin Chen. 2019. Sorbus lushanensis, A New Species of Rosaceae from China. PhytoKeys. 119: 97-105. DOI: 10.3897/phytokeys.119.32148

[Botany • 2019] Prunus sunhangii (Rosaceae) • A New Species of Prunus from central China

Prunus sunhangii D. G. Zhang & T. Deng

in Zhang, Jiang, Yusupov, et al., 2019.

 DOI: 10.1016/j.pld.2019.01.003 

Abstract

A new species of Rosaceae from Central China, Prunus sunhangii D. G. Zhang & T. Deng, sp. nov., is described and illustrated. The new species is placed in Prunus subgenus Cerasus by flower and fruit characteristics. It is most similar to Prunus cerasoides, but differs by having longitudinally 2-lobed apical petals, an acuminate leaf apex, 17–25 stamens, white petals, dark black drupes, brown hypanthium, and different phenology. The phylogenetic placement of this species was assessed based on morphological and molecular data. Molecular analysis (cpDNA + ITS) corroborated its placement in subgenus Cerasus, specifically Prunus section Serrula.

Keywords: Phylogenetic analyses, Taxonomy, Cerasus, Section Serrula

Fig. 2. Illustration of Prunus sunhangii D. G. Zhang & T. Deng sp. nov. (A) Fruiting shoot; (B) Leaf, showing abaxial indumentums; (C) Flower, showing with pistil and stamens; (D–E) Fruit, showing with pedicel.

Fig. 1. Living images of Prunus sunhangii D. G. Zhang & T. Deng sp. nov. (A) Habitat; (B) Stem; (C) Leaf, showing abaxial indumentums; (D) Inflorescence; (E–F) Opening white flower: front and back side; (G) Ripe fruit.

Scale bars: 1 cm in C, D, E, F, G.

Prunus sunhangii D. G. Zhang & T. Deng, sp. nov.

Diagnosis: P. sunhangii is easily differentiated from P. cerasoides by its apically longitudinally 2-lobed petals and other features: white flowers, black drupe, stamens number (17–25), brown hypanthium and with phenology.

Distribution and habitat — P. sunhangii is restricted to the Wuling Mountains in South China, which is a center of the Metasequoia Flora (Chen et al., 2017). Plants were growing on limestone soil, scattered along a slope adjoining the valley at 300–600 m in Hunan province and at 1000–1200 m in Hubei province (Fig. 4).

Etymology – The epithet of the new species refers to the chinese botanist Prof. Hang Sun, who made a significant contribution to our knowledge of the flora of China.

Vernacular name - Chinese mandarin: Sūn Háng Yīng (孙航樱).

 Xiaoshuang Zhang, Zhilin Jiang, Ziyoviddin Yusupov, Menghua Zhang, Daigui Zhang, Komiljon Tojibaev, Ying Meng and Tao Deng. 2019. Prunus sunhangii: A New Species of Prunus from central China. Plant Diversity. 41(1); 19-25. DOI: 10.1016/j.pld.2019.01.003 

[Botany • 2018] Cerasus kumanoensis (Rosaceae) • A New Species from the Southern Kii Peninsula, Japan

Cerasus kumanoensis  T. Katsuki 

in Katsuki, 2018

 DOI: 10.18942/apg.201801 

A new species, Cerasus kumanoensis T. Katsuki (Rosaceae), sp. nov., is described from the southern Kii Peninsula, Japan. It is similar to C. jamasakura var. jamasakura and C. leveilleana because the corymbose inflorescences and extended peduncle are identical in these three taxa. However, C. kumanoensis is distinguished by several morphological and phenological characteristics, an earlier flowering period, narrowly ovate and smaller leaf blade (4–8 cm long, 1.8–3.6 cm wide) and glabrous petiole and pedicel.

Key words: Cerasus kumanoensis, flowering cherry, flowering period, Japan, Kii Peninsula

Fig. 1. Cerasus kumanoensis, sp. nov. 
A, shape of tree in full bloom (in Kumano on 9 Apr. 2017, TFA HAD-000288); B, hypanthium and calyx lobes [in Kozagawa on 21 Mar. 2017, TI00012970 (holotype)]; C–E, flower (C in Kumano on 9 Apr. 2017, TFA HAD-000295, D in Kushimoto on 21 Mar. 2017, FA HAD-000213, E in Kumano on 14 Mar. 2017, TFA HAD000190); F, mature fruit (in Kumano on 28 May 2017, TFA HAD-000295); G, leaves on short shoot (TI00012971).

Toshio Katsuki. 2018. A New Species, Cerasus kumanoensis from the Southern Kii Peninsula, Japan. Acta Phytotax. Geobot. 69(2); 119-126. DOI: 10.18942/apg.201801