Materia Revisionis Arisaemarum: II. Arisaema tridens (Araceae), a new rhizomatous species from Central Vietnam 
Zhengxu Ma1 Thanh Son Hoang & ZhouXin-Xin

ABSTRACT

Arisaema tridens Z.X. Ma, T.S. Hoang & X.X. Zhou, a new species of Arisaema sect. Anomala Gusman & L. Gusman, is described and illustrated from Bach Ma, Central Vietnam. This species is endemic to the region and is diagnosed against A. grapsospadix Hayata. The discovery of A. tridens increases the number of species of A. sect. Anomala in Vietnam to eleven.

KEYWORDS

Arisaema grapsospadix; Arisaema rubrirhizomatum; Arisaema section Anomala; Bach Ma; Thua Thien Hue.