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| Begonia colliculata Souvann. & Lanors. in Souvannakhoummane, Lanorsavanh, Park, et al., 2020. |
ABSTRACT
Begonia colliculata is described and illustrated with photographs from Nam Kading National Protected Area, in the Bolikhamxai Province of Laos.
Keywords: Begonia, Biodiversity, Laos, new taxon, taxonomy
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| Figure 1. Begonia colliculata Souvann. & Lanors.: A habit; B. stipule; C. pistillate flowers, front view; D. pistillate flowers, lateral view; E. styles and stigma; F. cross section of fruit; G. staminate flowers, front view; H. staminate flowers, back view; I. stamens; Drawn by K. Souvannakhoummane from SL1999 (HNL). |
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| Figure 2. Begonia colliculata Souvann. & Lanors.: A habit; B. staminate inflorescence; C. pistillate inflorescence; D. fruit, lateral view; E. pistillate flower, front view; F. pistillate flower, lateral view; G. staminate flowers, back view; H. staminate flowers, front view; scale bar: 1 cm; photo by S. Lanorsavanh from SL1999 (HNL). |
Begonia colliculata Souvann. & Lanors., sp. nov.
(Section Platycentrum).
Begonia colliculata is similar to Begonia hekouensis S.H.Huang, but differs in having ver-rucous peduncles (vs densely villous), bracts with a strigose margin (vs ciliate), sparsely strigose tepals (vs villous), a sparsely strigose and colliculate ovary with a broadly falcate-elongate dorsal wing (vs densely purplish brown villous and not colliculate, dorsal wing ligulate). It is also similar to B. croceaC.-I Peng but differs in having a cane-like stem (vs stemless), leave blade ovate-lanceolate (vs broadly ovate), inflorescences arising from axils on the stem (vs arising directly from the horizontal rhizome) and anthers elliptic-oblong, apex rounded (vs fusiform-obovate, apex acuminate) (Table 1).
Entomology.— The specific epithet “colliculata”refers to the colliculate surface of the ovary and fruit.
Vernacular.— ສົ້ມກຸ້ງແດງ - Som koung deang (Red begonia).
Keooudone Souvannakhoummane, Soulivanh Lanorsavanh, Jeong Ho Park, Ho Sang Kang, Tai Hyeon Ahn, Singkone Xayalath and Chanhsamone Phongoudom. 2020. Begonia colliculata (Begoniaceae), A New Species from Nam Kading National Protected Area, Bolikhamxai Province, Laos. Thai Forest Bulletin (Botany). 48(2); 108-113. DOI: 10.20531/tfb.2020.48.2.04
ມະຫັດສະຈັນພັນພືດຂອງປ່າສະຫງວນແຫ່ງຊາດນ້ຳກະດິງ
ຄົ້ນພົບພືດຊະນິດໃໝ່ຫຼາຍຊະນິດທີ່ມີລັກສະນະໂດດເດັ່ນ ເຊິ່ງຊີ້ວັດໃຫ້ເຫັນເຖິງຄວາມອຸດົມສົມບູນຂອງປ່າສະຫງວນແຫ່ງຊາດນ້ຳກະດິງ
