Arisaema petelotii K.Krause

 Arisaema petelotii K.Krause, Notizbl. Bot. Gart. Berlin-Dahlem 11: 332 (1932).

Arisaema petelotii K.Krause; Photo Hoang Thanh Son

Vietnamese name: 

Nam tinh, Thiên nam tinh. 

Chinese name: 

紫根南星 zi gen nan xing

English name: 

Latin name: 

Arisaema petelotii K.Krause

Family: 

Fabaceae

Synonym name:

No synonyms are recorded for this name.

Description: 

Plants dioecious. Rhizome lying underground or half underground, dark brown outside, purplish in section, thickly cylindric, 7-18 × 4-6 cm. Leaves usually 2; petiole green or purplish green, to 60 cm, proximal 20-30 cm sheathing into pseudostem, encircled by several cataphylls; leaf blade green, 3-foliolate; central leaflet with petiolule 1-4 cm, blade elliptic to ovate, to 30 × 17 cm, base rounded; lateral leaflets similarly petiolulate, obliquely ovate, apex acuminate. Peduncle colored as petiole, 7-12 cm. Spathe green, without stripes, semitranslucent; tube narrowly funnelform, 4-7 cm, throat 2-3 cm in diam.; limb deltoid-ovate, to 7 × 5 cm, apex acute and cuspidate. Spadix bisexual when mature; appendix basically green, 4-6 cm, slender, covered with rather numerous filiform neuter flowers, brushlike. Berries reddish, ovoid, ca. 5 mm in diam. 

Flower and fruid season: 

Flower June-July, fruid October-November. 

Distribution: 

This species is distributed in China (S Yunnan) and Viet Nam. In VietNam, found in Xuân Sơn (Phú Thọ).

Ecological: 

Humid forest floors and gravel slopes in shade; at elevations of 800-1000 m. 

Reference: 

- theplantlist.org

- efloras.org

- ipni.org