Begonia adscendens C.B. Clarke (1890: 26)

Bon, Trinh Ngoc, Do, Thi Thanh Ha, Le, Thi Hanh, Lo, Minh Duc, Zimmer, Heidi & Lin, Che- Wei, 2023, Begonia saxifragoides sp. nov. and two new records of Begonia (Begoniaceae) from northern Vietnam, Phytotaxa 600 (1), pp. 16-24 : 22

publication ID

https://doi.org/ 10.11646/phytotaxa.600.1.3

DOI

https://doi.org/10.5281/zenodo.8054133

persistent identifier

https://treatment.plazi.org/id/03D22242-392D-2B26-B598-0F48FCCDF781

treatment provided by

Plazi

scientific name

Begonia adscendens C.B. Clarke (1890: 26)
status

 

Begonia adscendens C.B. Clarke (1890: 26) View in CoL .

Type:— INDIA. Nagaland: Naga Hills, Jakpho , ix 1937, C. B. Clarke 41240 (lectotype K [ K000634623 ]) .

Distribution and ecology:— Begonia adscendens is a relatively widespread species from northeastern India to Myanmar and Laos, where it is epiphytic on cliffs or rocks in montane cloud forests. In Vietnam, it grows on nearly vertical rock faces from the cliff base in semi-shaded areas at 2,000 –2,200 m elevation in Ngoc Chien Commune, Muong La District, Son La Province ( Fig. 1 View FIGURE 1 ).

It can be easily distinguished from other Vietnamese tuberous begonias by having glabrous petioles and peduncles, sub-asymmetric lamina with a glabrous adaxial surface, 4-tepaled staminate flowers and 5-tepaled pistillate flowers, outer tepals sparsely pale puberulous on reverse, ovary 3-locular with bifid placentation, abaxial wing reaching up past the apex of the fruit capsule.

Specimen examined:— VIETNAM. Son La Province: Muong La District, Ngoc Chien Commune , 2,100 m elevation, 17 September 2022, Trinh Ngoc Bon, Thi Thanh Ha Do, Thi Hanh Le, Minh Duc Lo, Heidi Zimmer, Lo Van Chieu, Sung A Giang & Sung A Chu SCU2022-02 About SCU ( VAFS) .

C

University of Copenhagen

B

Botanischer Garten und Botanisches Museum Berlin-Dahlem, Zentraleinrichtung der Freien Universitaet

K

Royal Botanic Gardens

A

Harvard University - Arnold Arboretum

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