[Botany • 2020] Chamaelirium shimentaiense (Melanthiaceae) • A New Species from Guangdong, China

Chamaelirium shimentaiense Y.H.Tong, C.M.He & Y.Q.Li,

in Tong, Li, Guo, Dai, Zeng et He, 2020.  

DOI: 10.1111/njb.02634

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Abstract

Chamaelirium shimentaiense (Melanthiaceae), a new species from Shimentai Nature Reserve, Guangdong Province, China is described. This species is similar to C. shiwandashanense and C. viridiflorum in having actinomorphic flowers with six tepals and unilocular anthers, but is easily distinguished from them by its strongly undulate leaf blades with crispulate margins and inconspicuous venation, purplish tepals with a slightly broadened and obtuse apex, and purple-tinged filaments. The infrageneric assignment of this species is discussed and a color plate is provided.

 

Keywords: Chamaelirium, China, Melanthiaceae, new species, taxonomy

 

 

Chamaelirium shimentaiense Y.H.Tong, C.M.He & Y.Q.Li 

Yi-Hua Tong, Yuan-Qiu Li, Guo-Xin Guo, Ke-Yuan Dai, Yang-Jin Zeng and Chun-Mei He. 2020. Chamaelirium shimentaiense (Melanthiaceae), A New Species from Guangdong, China. Nordic Journal of Botany. DOI: 10.1111/njb.02634 

 Researchgate.net/publication/340229003_Chamaelirium_shimentaiense_a_new_species_from_Guangdong_China

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[Botany • 2023] Chamaelirium jiuwanshanense (Melanthiaceae) • A New dioecious Species from Guangxi, China

 Chamaelirium jiuwanshanense Ying Qin & Yan Liu,

in Qin, Tan, Huang et Liu, 2023.

九万山白丝草  ||  taiwania.NTU.edu.tw/abstract/1912 

  lyj.gxzf.gov.cn

Abstract

Chamaelirium jiuwanshanense, a new dioecious species of Melanthiaceae from Jiuwanshan National Nature Reserve, Guangxi, China is described and illustrated. It is similar to C. shimentaiense, but can be clearly distinguished from the latter mainly by its dioecious sexual system, linear-lanceolate bract-like cauline leaves, racemes with pedicelled flowers, etc. A detailed morphological description, and the information on its distribution, habitat and conservation status are provided here.

Keyword: Chamaelirium shimentaiense, Dioecious, Flora of Guangxi, Melanthiaceae, New taxon, Taxonomy

 

 Chamaelirium jiuwanshanense Ying Qin & Yan Liu, sp. nov. 

九万山白丝草 

Chamaelirium jiuwanshanense is similar to C. shimentaiense Y.H.Tong, C.M.He & Y.Q.Li, but differs from the latter mainly by its dioecious (vs. hermaphroditic) sexual system, linear-lanceolate (vs. elliptic) bract-like cauline leaves, racemose (vs. spicate) inflorescences, flowers with distinct pedicels (vs. sessile or subsessile), and greenish, dark-greenish, or purplish-brown tepals (vs. purplish).

Ying Qin, Fei Tan, Yu Song Huang and Yan Liu. 2023. Chamaelirium jiuwanshanense (Melanthiaceae), A New dioecious Species from Guangxi, China. Taiwania. 68(1); 97-100. DOI: 10.6165/tai.2023.68.97

  taiwania.NTU.edu.tw/abstract/1912

九万山发现2个植物新种

  lyj.gxzf.gov.cn/xwzx/xxkb/t16351536.shtml

[Botany • 2023] Paris siamensis (Melanthiaceae) • Revision on the Genus Paris in Thailand, with A New Species from Luang Prabang Range

  Paris siamensis Ruchis., 

in Ruchisansakun, Sraphet, Yothawut, Thamanukornsri, Suksee, ... et Triwitayakorn, 2023.

ตีนฮุ้งดอยสยาม  ||  DOI: 10.3390/plants12030430 

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 Abstract

The genus Paris is an important and confusing taxon due to high variation within species, and differences between species are sometimes difficult to delimit. Thus, the status of some taxa has changed over time. To clarify the status of Paris species for plant conservation and effective management of this genus in Thailand, we performed an intensive survey in northern Thailand, studied morphological characteristics, and constructed a molecular phylogenic tree, which we compared to recently published results of this genus. Our results indicate that there are two species in Thailand: P. yunnanensis and a new species, P. siamensis. Detailed descriptions, illustrations, and the phylogenetic position of these two species are provided here.

Keywords: Paris chinensis; Melanthiaceae; threatened species; cryptic taxa; Paris polyphylla

  Paris siamensis Ruchis.
(A) Plant, (B) Leaf, (C) Flower (front view), (D) Flower (lateral view), (E) Sepal, (F) Petal, (G) Stamen, (H) Pistil (front view), (I) Pistil (lateral view).

Drawn by Jeerapach Monthanom

  Paris siamensis Ruchis.
 (A) Habit, (B) Leaf, (C) Flower (front view), (D) Flower (lateral view), (E) Sepal, (F) Petal, (G) Stamen, (H) Pistil (front view), (I) Pistil (lateral view).

 Paris siamensis Ruchis. 

Paris siamensis is similar to P. liiana but differs in having petals below sepals (versus petals above sepals), stamen number (2.2–)2.8–3 times petal number (versus stamen number 2 times petal number), and anther length 8–10 mm long (versus anther 15–40 mm long). 

Distribution. To date, endemic to Nan province, Thailand (may be found in Laos), 1050–1216 m alt.

Vernacular name. Tin Hung Doi Siam (ตีนฮุ้งดอยสยาม), 

Tin Hung Doi (ตีนฮุ้งดอย).

Distributions of the Two Paris Species in Thailand

The distributions of the plants showed that this genus is specific to high-altitude habitats. The two species in Thailand were separated by lowland areas along the Nan river. Paris siamensis was found only in Luang Prabang Range, while P. yunnanensis was more widespread and found in the Phi Pan Nam Range, the Thong Chai Range, and the Daen Lao Range, which connects to the Shan plateau where the same species is found and is connected to the populations in China.

 

 

Saroj Ruchisansakun, Supajit Sraphet, Chatchai Yothawut, Chompunooch Thamanukornsri, Nawarat Suksee, Panida Kongsawadworakul, Nattaya Srisawad, Nicha Thawara, Puangpaka Umpunjun, Supaporn Rodpradit, Winai Sangkaew and Kanokporn Triwitayakorn. 2023. Revision on the Genus Paris in Thailand, with a New Species Paris siamensis. Plants. 12(3), 430. DOI: 10.3390/plants12030430  

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[Botany • 2019] Taxonomy, Evolution and Phylogeography of the Genus Helonias (Melanthiaceae) Revisited

Helonias bullata L.

in Tanaka, 2019.

DOI:  10.11646/phytotaxa.390.1.1

Abstract

This paper reviews the taxonomy, evolution and phylogeographic aspects of the genus Helonias L. sensu lato, including Ypsilandra and Heloniopsis (Melanthiaceae) that are basically similar in many morphological and ecological characters to Helonias sensu stricto. It includes three parts, I–III. In Part I, characters and their variation are examined to determine generic traits and diversity. In Part II, an attempt is made to taxonomically determine diversity among individuals. Taxonomic conclusions and revisions are principally the following: Helonias comprises 12 species, which are classified into two sections, H. sect. Helonias and H. sect. Heloniopsis comb. & stat. nov. Helonias sect. Helonias consists of H. bullata only; H. sect. Heloniopsis comprises two subsections, H. subsect. Ypsilandra comb. & stat. nov. and H. subsect. Heloniopsis. Helonias subsect. Ypsilandra is composed of five species previously published under the genus Ypsilandra. Helonias subsect. Heloniopsis consists of two series, H. ser. Umbellatae ser. nov., with three species from Taiwan and the Nansei Islands (incl. the Ryukyus), Japan, and H. ser. Heloniopsis, with three species from Japan, Korea and E. Russia (southern Sakhalin). Helonias yunnanensis var. mesostyla is described as a new variety from N Myanmar and SW China (NW Yunnan). The new combinations Helonias koreana (from Korea) and H. parviflora (from China) are proposed. Lectotypes for Ypsilandra parviflora, Y. thibetica, Y. yunnanensis var. micrantha, Heloniopsis breviscapa and H. grandiflora are designated. A revised typification for Sugerokia japonica is proposed, negating a previous lectotypification. Heloniopsis tubiflora is reduced to synonymy under Helonias koreana. In Part III, the evolutionary and phylogeographic aspects of Helonias are discussed, and a phylogram inferred from cladistic analysis of phenotypic characters is presented. In the phylogram, Helonias is monophyletic, while H. sect. Helonias and H. subsect. Ypsilandra are respectively paraphyletic, and H. subsect. Heloniopsis is monophyletic. Incongruence in results between morphological and DNA sequence analyses is briefly discussed.

Keywords: character evolution, breeding system, floral structure, Heloniadeae, historical biogeography, infrageneric system, life history, phenology, Monocots

Noriyuki Tanaka. 2019. Taxonomy, Evolution and Phylogeography of the Genus Helonias (Melanthiaceae) Revisited. Phytotaxa. 390(1); 1–84. DOI:  10.11646/phytotaxa.390.1.1

[Botany • 2013] Veratrum mengtzeanum subsp. phuwae • Delimitation in the Veratrum mengtzeanum — V. chiengdaoense complex (Melanthiaceae) in Thailand based on Morphology, with Commentary on Conservation Status

FIGURES 4–5. Veratrum mengtzeanum subsp. mengtzeanum (from: Doi Chiangdao, Chiang Mai province, Thailand; photos by Piyakaset Suksathan).

FIGURE 6. Veratrum mengtzeanum subsp. phuwae Trias-Blasi subsp. nov. (from type locality)

DOI:  10.11646/phytotaxa.96.1.2

Abstract

The two species of Veratrum in Thailand, V. mengtzeanum and V. chiengdaoense, are supported as conspecific with a detailed morphological study. Two distinct subspecies of V. mengzeanum s.l. are defined based on morphology and distribution, and a new subspecies, Veratrum mengzeanum subsp. phuwae is described. Conservation assessments are provided for both subspecies.

Keywords: Veratrum mengtzeanum, V. chiengdaoense

Veratrum mengtzeanum subsp. phuwae Trias-Blasi subsp. nov.  

 Differs from V. mengtzeanum subsp. mengtzeanum in having a larger number of flowers per individual and shorter filaments.

Etymology.— This subspecies is named after the Phu Wae mountain peak located in Doi Phu Ka National Park in the northern floristic region of Nan in Thailand, the only known locality. The specific ephithet “phuwae” is a noun in apposition and therefore does not have an additional Latin suffix.

Anna Trias-Blasi and Piyakaset Suksathan. 2013. Delimitation in the Veratrum mengtzeanum — V. chiengdaoense complex (Melanthiaceae) in Thailand based on Morphology, with Commentary on Conservation Status. Phytotaxa. 96 (1): 54–62. DOI:  10.11646/phytotaxa.96.1.2