[Botany • 2023] Dolichos kasetsartianus (Fabaceae: Papilionoideae) • A New Species from Thailand, and Clarification of the Identity compared with D. junghuhnianus and Wajira grahamiana

Dolichos kasetsartianus  Meeboonya, Ngerns. & Balslev, 

in Meeboonya, Ngernsaengsaruay et Balslev, 2023. 

หัวใจชมพูเกษตรศาสตร์  ||  DOI: 10.1007/s12225-023-10108-w 

photos: C. Ngernsaengsaruay facebook.com/ChatchaiNgernsaengsaruay

Summary

A new species, Dolichos kasetsartianus, is described from Thailand; we include a line drawing, photographs, distribution, specimens examined, phenology, etymology, vernacular name, a summary of the ecology and IUCN conservation status, and taxonomic comments. The morphological differences and some nomenclatural problems between D. kasetsartianus and the allied species, D. junghuhnianus and D. grahamianus, currently accepted as Wajira grahamiana, are clarified. A table is provided to compare the new species with the two allied species on the basis of vegetative and reproductive characters, ecology and distribution.

 

Keywords: Dolichos grahamianus, Leguminosae, Phaseoleae, Phaseolinae, species nova, taxonomy, Vigna

Dolichos kasetsartianus.
A stem and leaves; B stem, leaves and inflorescence; C – D inflorescences with young and mature flowers; E inflorescence with flowers and fruits; F infructescence with mature fruits; G – H seeds.

Photos A – F taken at Kanchanaburi Province, Si Sawat Distr., Nong Pet Subdistr., 2 Feb. 2022, Ngernsaengsaruay, Meeboonya & Boonthasak FAB01-20220202. 

photos: A – F Chatchai Ngernsaengsaruay G – H Rumrada Meeboonya.

Dolichos kasetsartianus Meeboonya, Ngerns. & Balslev, sp. nov.

ETYMOLOGY. The specific epithet honours Kasetsart University, the institution that provided a grant under the program “KU Reinventing” for this research. Moreover, the type specimen was collected on 2nd February 2022 which coincides with the 79th anniversary of the founding of Kasetsart University. We would like to express our sincerest gratitude to our beloved Kasetsart University and also to all the teachers who kindly taught, encouraged and supported us.

VERNACULAR NAME. Hua chai chom phu kasetsart (หัวใจชมพูเกษตรศาสตร์), the name is here given by the authors and it refers to the standard petal which has the shape of a pink heart, also combined with the name of Kasetsart University. The vernacular name is a combination meaning heart (hua chai), pink (chom phu), and kasetsart (Kasetsart University). The English name is Kasetsart pink heart, suggested here.

Rumrada Meeboonya, Chatchai Ngernsaengsaruay and Henrik Balslev. 2023. Dolichos kasetsartianus (Fabaceae: Papilionoideae), A New Species from Thailand, and Clarification of the Identity compared with D. junghuhnianus and Wajira grahamiana. Kew Bulletin. DOI: 10.1007/s12225-023-10108-w 

 facebook.com/ChatchaiNgernsaengsaruay/posts/6608489252529177

 

[Botany • 2022] Garcinia siripatanadilokii (Clusiaceae) • A New Species from Peninsular Thailand

Garcinia siripatanadilokii Ngerns., Meeprom, Boonth., Chamch. & Sinbumr., 

 in Ngernsaengsaruay, Meeprom, Boonthasak, Chamchumroon, et al., 2022. 

ส้มแก้วสมคิด || DOI: 10.1007/s12225-022-10059-8 

  facebook.com/ChatchaiNgernsaengsaruay

facebook.com/KasetsartUniversity 

Summary

Garcinia siripatanadilokii Ngerns., Meeprom, Boonth., Chamch. & Sinbumr. (Clusiaceae), a new species discovered from tropical lowland evergreen rain forest, Peninsular Thailand, is described. A detailed morphological description and illustrations of the species are provided, along with information on recognition, distribution, specimens examined, habitat, conservation assessment, phenology, etymology, vernacular name and uses.

Key Words: Garcinia sect. Brindonia, dioecious plant, edible fruits, Garcinia lanceifolia, Khao Chong, plant taxonomy, species nova, yellow latex

  

   

Garcinia siripatanadilokii.
 A habitat and habit; B outer bark and inner bark with yellow latex; C branches, young and mature leaves; D branches and mature leaves; E female flower bud with bracts; F female flower; G branches, leaves and young fruits with persistent sepals; H – K branches, leaves and ripe fruits.

 photos: ChatchaiNgernsaengsaruay.

Garcinia siripatanadilokii Ngerns., Meeprom, Boonth., Chamch. & Sinbumr., sp. nov. 

RECOGNITION. Garcinia siripatanadilokii is similar to G. lanceifolia in its habit (shrub or small tree), 4-merous flowers, sepals and petals decussate and concave, stigma radiate, shallowly lobed, papillate, fresh leaves crispy when crushed, fruits and leaves have a sour taste. Differences between these two related species are shown in Table 1.

DISTRIBUTION. Known only from Peninsular Thailand: Khao Chong, Trang Province, Khlong Ton, Satun Province and Hala-Bala Wildlife Sanctuary, Narathiwat Province, but to be expected in Peninsular Malaysia. 

ETYMOLOGY. The specific epithet and Thai name are in honour of Dr Somkid Siripatanadilok, the former Associate Professor of the Department of Forest Biology, Faculty of Forestry. He taught the forest biology component of courses in field forest biology (in Peninsular Thailand, Khao Chong Botanical Garden is one of several study areas of the course), anatomy of trees, plant tissue culture and research techniques in forest biology (plant microtechniques) when the first author was an undergraduate student and a graduate student at Kasetsart University. He encouraged and supported the first author to work in the laboratory for plant tissue culture as an undergraduate student (1994 – 1997). He was the former co-advisor of the first author in his master's degree (1997 – 2000). He was a superb and a brilliant teacher, actively involved in many aspects of forest science in Thailand.

VERNACULAR NAME. Som Kaeo Somkid (ส้มแก้วสมคิด) (suggested here); Som Kaeo (ส้มแก้ว) (Satun) (from A. F. G. Kerr 14580).

USES. The ripe fruits are edible. The pericarp, sarcotesta, young shoots, leaves and flowers have a sour taste. It is suitable for cultivation as an ornamental.

Chatchai Ngernsaengsaruay, Nattanon Meeprom, Weereesa Boonthasak, Voradol Chamchumroon, Aroon Sinbumroong, Paweena Wessapak and Sutee Duangjai. 2022. Garcinia siripatanadilokii (Clusiaceae), A New Species from Peninsular Thailand. Kew Bulletin. DOI: 10.1007/s12225-022-10059-8

  facebook.com/ChatchaiNgernsaengsaruay/posts/pfbid0L7xDcxCxUkXJRYfKtmwsSYsVReiJaeabuXgepvrSZjw46wCnpt3Z1BNdXVJj8p9Rl

 facebook.com/KasetsartUniversity/posts/478574730972549