垂头苇谷草

Pentanema cernuum (Dalz. et Gibs.) Ling, 植物分类学报, 10: 180. 1965, adnot. ——Vicoa cernua Dalz. et Gibs., Bombay Fl. 126: 314. 1861; Hook. f., Fl. Brit. Ind. 3: 297. 1881; T. Coake, Fl. of. the Presidency of Bombay, 2: 32. 1908.——Inula dalzellii Hand. -Mazz. in Not. Bot. Gart. Mus. Berl-Dahl. 13: 632. 1937; S. Y. Hu in Quart. Journ. Taiw. Mus. 19, 3-4: 296. 1966.

未见到标本，据前人记载，此种也产云南玉溪（新兴）。