Begonia modestiflora Kurz. A, B. Habit 1871
Creators: name: Pham, Van The
name: Dinh, Quang Diep
name: Nguyen, Van Canh
name: Trinh, Ngoc Bon
name: Nguyen, Duc Dinh
name: Nguyen, The Hien
name: Lin, Che Wei
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Cucurbitales
Begoniaceae
Begonia
Begonia modestiflora

description: <i>Begonia modestiflora</i> Kurz (1871: 296). (Figs. 4 &amp; 5). TYPE:— MYANMAR. Arracan, Baronga Island, Oct 1869, <i>W.</i> <i>S. Kurz s.n</i>. (Lectotype, K; Isolecotype, K (designated by Hughes, 2008)). <i>Begonia sootepensis</i> Craib, Bull. Misc. Inform. Kew 1911:57 (1911). <i>Begonia modestiflora</i> var. <i>sootepensis</i> (Craib.) Tebbitt, Begonias p. 248 (2005). <i>Begonia yunnanensis</i> var. <i>sootepensis</i> (Craib) Craib, Aberdeen Univ. Stud. 47: 96 (1912). TYPE:— THAILAND. Chiengmai, Doi Sootep, <i>A.F.G. Kerr 785</i> (Lecotype, K; Isolecotypes, B, BM, E, P (designated by Hughes, 2008)). <i>Begonia sootepensis</i> var. <i>thorelii</i> Gagnep., Fl. Indo-Chine 2:1104 (1921). <i>Begonia yunnanensis</i> var. <i>thorelii</i> (Gagnep.) Golding &amp; Kareg., Phytologia 54(7): 499 (1984). TYPE:— LAOS. Bassac, 1866-1868, <i>Thorel s.n.</i> (Lectotype, P; Isolecotype, P (designated by Hughes, 2008)). <i>Begonia yunnanensis</i> H.Lév., Repert. Spec. Nov. Regni Veg. 7:20 (1909). TYPE:— CHINA. Yunnan, <i>Henry 12403</i> (Lectotype, E; Isolecotypes, B, BM, HBG, K, L (designated by Hughes, 2008). <b>Distribution and ecology</b>:—It grows on wet humus on rock surfaces and is locally common. It can be seen growing alongside shrubs and herbaceous species such as <i>Adiantum</i> spp., <i>Impatiens</i> spp., mosses, <i>Poaceae</i>, and <i>Selaginella</i> spp. Despite the habitat location falling within Chu Yang Sin National Park buffer zone, the plant is threatened by habitat loss of unregulated activities such as forest farming, agricultural burning, and the impact of tourism. <b>Conservation Status</b>:—More fieldwork in Vietnam is needed to give a precise evaluation of its population size and dynamics. We assess <i>B. modestiflora</i> to be Data Deficient. <b>Specimen examined</b>:— VIETNAM. Dak Lak Province: Lak district, Yang Tao commune, Bim Bip waterfall, Chu Yang Sin National Park, evergreen lowland forests on silicate rocks, around point 12°26’00.8”N 108°15’31.1”E, at elevation 600–650 m a.s.l., 17 August 2020, <i>Nguyen Van Canh, Nguyen Van Khuong, PVT1025</i> (SGN, VNM). <b>Notes</b>:— <i>Begonia modestiflora</i> is a widespread species that occurs in Bangladesh, China, Thailand, Laos and Myanmar (Hughes, 2015–present; Shui <i>et al</i>., 2019), and hence shows considerable variation in morphology. Nguyen’s checklist (Nguyen, 2003) listed <i>B. minicarpa</i> (Hara, 1972) as occuring in Vietnam, a species that is likely to be confused with <i>B. modestiflora</i>, as it shares a similar erect habit, ovate-lanceolate leaves, 4-tepaled staminate flowers and unequal ovary wings. It differs in being a smaller species that is endemic to the Himalayan region, and <i>B. modestiflora</i> can be further distinguished by its many-flowered (vs. few-flowered) inflorescences, 5 tepaled (vs. 3-tepaled) pistillate flowers and fruits twice as small. The specimen cited here clarifies <i>B. modestiflora</i> as native to Vietnam, rather than <i>B. minicarpa</i>.
description: Published as part of <i>Pham, Van The, Dinh, Quang Diep, Nguyen, Van Canh, Trinh, Ngoc Bon, Nguyen, Duc Dinh, Nguyen, The Hien &amp; Lin, Che Wei, 2021, Begonia of Vietnam: an updated checklist, including a new species and a new record, pp. 144-154 in Phytotaxa 507 (2)</i> on page 151, DOI: 10.11646/phytotaxa.507.2.2, http://zenodo.org/record/5425591
description: {"references": ["Kurz, S. (1871) Ueber einige neue und unvollkommen bekannte Indissche Pflanzen. Flora 54 (19): 289 - 298.", "Hughes, M. (2008) An Annotated Checklist of Southeast Asian Begonia. Royal Botanic Garden Edinburgh, 164 pp.", "Nguyen, T. B. (2003) Begoniaceae- h o Thu h ai dy ong. In: Nguyen, T. B. (Ed.) Checklist of Plant Species of Vietnam, vol. 2. Agric. Publ. House, Hanoi, pp. 408 - 414."]}