Species
B. bamaensis
Photos
4 photos
Identity
- Genus
- Begonia
- Name
- B. bamaensis
- Author
- Yan Liu & C.-I Peng, Bot. Stud. (Taipei)
- Publication Date
- 2007
- Date of Origin
- 2007
- Place
- W Guangxi: Bama Yaozu Zizhixian
- Habitat
- only found in two karst caves ca. 200-800 m. alt.; On semi shady rocky cliff at entrance of limestone caverns. Western Guangxi, China (Figure 5), rare, currently known only from two nearby karst caves in western Guangxi.
- Country
- China
- Region
- Asia
- Section
- Coelocentrum
- Chr 2n
- 30
- Plant Type
- Rhizomatous
- Synonyms and Comments
- Etymology: from the type locality Bama Yaozu Zizhixian; Begonia bamaensis has a somatic chromosome number of 2n = 30 (Figure 6), which agrees with all other members of Begonia sect. Coelocentrum for which chromosome numbers were reported (Ku et al., 2004; Peng et al., 2005a, 2005b; Liu et al., 2005; Fang et al., 2006; Ku et al., 2006; Peng et al., 2007).
- Reference
- Bot. Stud. (Taipei) 48(4): 465-473. 2007; JGSL9/08
- Article References
- Hughes M. et al., Asian Begonia 26, 2018; Yu-Min Shui & Wen-Hong Chen, Begonia of China: p178, 2017
- Photo References
- Bot. Stud. (Taipei) 48(4): 465 (-473; figs., map). 2007; Hughes M. et al., Asian Begonia 26, 2018; Yu-Min Shui & Wen-Hong Chen, Begonia of China: p178, 2017
Plant
- Description
- A stemless species; Herbs monoecious; epipetric; perennial; rhizomatous. The specific epithet is derived from the type locality, Bama Yaozu Zizhixian (Bama Yao Autonomous County).; Begonia bamaensis Yan Liu & C.-I Peng is similar to B. cirrosa L.B. Smith & D.C. Wasshausen, differing in the leaves adaxially densely setulose or hispidulous (vs. pilose or pilose-setose) and adorned with white bands or patches between major veins (vs. without white maculation); stipules abaxially glabrous or with few hairs along midrib (vs. pubescent throughout outer surface); peduncle pilose or sparsely so (vs. villous); staminate flower with outer tepals 7-14.5 × 7-13.5 mm (vs. 7-17 × 7-22 mm); ovary whitish or reddish pilose (vs. red hispid-hirsute); capsule 7-12 mm long (vs. 10-20 mm long), abaxial wing of capsule distinctly curved on one side (vs. straight or slightly curved). SEM micrographs of leaves of B. bamaensis (Figures 3-E, G; 4-A, B) revealed prominently elevated stomata complexes, which is unique for the genus Begonia. A comparison of the salient characters of B. bamaensis with three other congeners in sect. Coelocentrum, one of which, B. bonii, from northern Vietnam, is shown in Table 1.
- Growth Type
- Rhizome 3-15 cm or longer, 9-17 mm thick, internodes (3-)5-7(-10) mm long, brown, reddish brown or greenish brown, villous near petiole bases and leaf scars.
- Stem Type
- Acaulescent, rhizome
Lineage
2 descendants
Parents
No parentage recorded.
Etymology: from the type locality Bama Yaozu Zizhixian; Begonia bamaensis has a somatic chromosome number of 2n = 30 (Figure 6), which agrees with all other members of Begonia sect. Coelocentrum for which chromosome numbers were reported (Ku et al., 2004; Peng et al., 2005a, 2005b; Liu et al., 2005; Fang et al., 2006; Ku et al., 2006; Peng et al., 2007).
Descendants
2 recorded children
As female parent
0
No children recorded with this plant as the female parent.
As male parent
2
Female parent: B. fangii
Female parent: B. cirrosa
Culture
No populated fields in this section.