Species
B. arachnoidea
Photos
2 photos
Identity
- Genus
- Begonia
- Name
- B. arachnoidea
- Author
- C.-I Peng, Yan Liu & S.M.Ku, sp. nov.
- Publication Date
- 2008
- Date of Origin
- 2005
- Place
- Guangxi: Daxin Xian (County), Encheng Xiang
- Habitat
- Encheng Nature Reserve at 200 m in mixed bamboo and scrubby vegetation at foot of limestone hill, on semishaded rocky slope, occasional.
- Country
- China
- Region
- Asia
- Section
- Coelocentrum
- Chr 2n
- 30
- Plant Type
- Rhizomatous
- Synonyms and Comments
- Possibly synonymous with B. umbraculifolia var. flocculosa; Etymology: referring to the spiderweb venation of the leaf reverse
- Reference
- Bot. Stud. (Taipei) 49(4): 406. 2008
- Article References
- Hughes M. et al., Asian Begonia 15, 2018
- Photo References
- Bot. Stud. (Taipei) 49(4): 406 (-408, 410; figs. 1-2, 5). 2008; Hughes M. et al., Asian Begonia 15, 2018
Plant
- Description
- Monoecious creeping herb
- Growth Type
- Compact
- Plant Habit
- Growing at the foot of a limestone hill on a semishaded rocky slope.
- Plant Height
- Low <0.5m
- Stem Type
- Rhizome stout 1.1 - 2 cm thick
- Stem Habit
- Few Branched
- Internodal Distance
- 0.5-1 cm
- Sun Tolerance
- Semi-shade
Lineage
1 descendants
Parents
No parentage recorded.
Possibly synonymous with B. umbraculifolia var. flocculosa; Etymology: referring to the spiderweb venation of the leaf reverse
Descendants
1 recorded children
As female parent
0
No children recorded with this plant as the female parent.
As male parent
1
Female parent: B. ningmingensis var. ningmingensis
Culture
- Endangered Status
- Rare
- Original Botanical Description or Link to
- Ching-I PENG, Shin-Ming KU, Yoshiko KONO, Kuo-Fang CHUNG, and Yan LIU - Botanical Studies 49:405-418. 2008: Two new species of Begonia (sect. Coelocentrum, Begoniaceae) from limestone areas in Guangxi, China: B. arachnoidea and B. subcoriacea: “Herbs, monoecious, rhizomatous; rhizome stout, creeping, 1.1-2 cm thick, internode 0.5-1 cm long. Leaves peltate, basal; stipules caducous, ovate-triangular, 0.7-0.9 cm long, 0.7-1.1 cm wide; petiole 13-26(-30) cm long, hirsute-villous (the hairs 2-5.5 mm long); leaf blade suborbicular or broadly ovate, 12-26(-35) cm long, 11-19(-27) cm wide, papery, adaxially deeply green or brownish, with white or pale band along major veins (the band often composed of small, dense white spots), densely shortly setose and hispid-setulose (trichomes 0.2-0.9 mm long), abaxially densely hispidulous-pilose on all veins (trichomes reddish with red base, 0.3-0.8 mm long, somewhat unevenly spread and ragged), base rounded, slightly oblique, margin shallowly unequally serrulate or undulate, apex acute to shortly acuminate; venation basally 6- or 7-palmate, tertiary veins percurrent, spiderweblike. Inflorescences axillary; peduncle 9-31 cm long, moderately hispid-villous; flowers white, 6-24 in dichasial cymes; bracts caducous, ovate or oblong, 5-7 cm long 5-6 mm wide, margin serrate-ciliate, apex obtuse. Staminate flower: pedicel 0.6-3.7 cm, pilose; tepals 4, pink, outer 2 broadly ovate, 1.1-1.9 cm long, 1-1.5 cm wide, base subrounded, apex somewhat acute or obtuse, outside hirsute or hispid-pilose, inner 2 elliptic, 6-8 mm long, 3.5-5 mm wide, apex acute; stamens 26-44; filaments ca. 1.5-2 mm long; anthers obovate-oblong, 1.1-1.4 mm; connective apex emarginate. Carpellate flower: pedicel 4-6 cm, with one bracteole, glandular-hispidulous or sparsely so; tepals 3, pink, outer 2 suborbicular or broadly ovate, 0.9-1.5 cm long, 0.9-1.4 cm wide, apex and base rounded, inner 1 elliptic, 6-8 mm long, 3.5-4 mm wide; ovary oblong, 7-16 mm long, 4-5 mm across, moderately to sparsely glandulose-pilose or glandulose-villous and with some or many small stalked glandular hairs, unequally 3-winged, 1-locular with parietal placentation, each placenta with 2 lamellae; styles 3, ca. 4 mm long, fused at base, stigma spirally twisted and papillose all around. Fruits nodding, 1.3-2.6 cm long, 0.5-0.6 cm across.”