ECHIDNIUM (from echidnion, a young viper; in allusion to its relationship to Dracontium). ORD. Araceae. A genus of a couple of species of stove tuberous-rooted perennials, included under Dracontium by Bentham and Hooker. For culture, see Anchomanes. ECHIDNIUM Regelianum (Regel's). fl. purplish-brown; spathe sub-erect; spadix cylindrical; peduncle partly adnate to the spathe. June. l. tripartite, deep green. h. 1 1/2ft. to 3ft. Brazil, 1866. SYN. ECHIDNIUM Spruceanum, of gardens. (R. G. 503.) ECHIDNIUM Spruceanum (Spruce's). A garden synonym of ECHIDNIUM Regelianum.