Tuesday, August 23, 2011

[Botany • 2011] Impatiens parvisepala S.X. Yu & Y.T. Hou • A New Species (Balsaminaceae) from Guangxi, China

Impatiens parvisepala S.X. Yu & Y.T. Hou
Impatiens parvisepala S.X. Yu & Y.T. Hou sp. nova (Balsaminaceae), from Guangxi, China, is described and illustrated. It is closely related to I. claviger in having a raceme, yellow flowers and four lateral sepals, but differs by the sessile or subsessile leaves aggregated or subverticillate on the upper part of the stem, obovate or obovate-lanceolate leaf blades, lanceolate or subulate bracts, smaller outer lateral sepals, funnel-shaped lower sepal with a nearly straight spur and reddish patches, and the lateral united petals clawed. Pollen morphology and leaf epidermal characters also support recognition of I. parvisepala.

Fig. 2. Impatiens parvisepala drawing from Holotype

Fig. 2. - A-D: Impatiens parvisepala

Fig. 2. - A-D: Impatiens parvisepala, E-G: Impatiens claviger, H-J: Impatiens apalophylla, K-M: Impatiens siculifer

Hou, Y. T., Zhou, X. R. & Yu, S. X. 2011: Impatiens parvisepala (Balsaminaceae), a new species from Guangxi, China. Ann. Bot. Fennici. 44 (1): 57–62.: http://www.sekj.org/PDF/anb48-free/anb48-057i.pdf