别名：割手密;紫台蔗茅;

科名：禾本科 Gramineae

属名：蔗茅属 Erianthus

《中国植物志》第10(2)卷052页
  8. 台蔗茅（种子植物名称）
  Erianthus formosanus Stapf in Kew Bull. 1896: 228. 1896; Honda in Journ. Fac. Sci. Univ. Tokyo (Bot.) 3: 396. 1930;中国主要植物图说·禾本科764, 图709. 1959;海南植物志4: 452, 图1241-1977; 台湾植物志5: 648-1978.——Erianthus fastigiatus auct. non Nees 1854; Henry in Trans. Asiat. Soc. Jap. 26: 107. 1896——Saccharum formosanum (Stapf) Ohwi in Acta Phytotax. et Geobot. 11: 152. 1942.

《Flora of China》 Vol. 22 (2006)
Saccharum formosanum  (Stapf) Ohwi
台蔗茅   tai zhe mao
Erianthus formosanus Stapf, Bull. Misc. Inform. Kew 1898: 228. 1898; E. pollinioides Rendle; Saccharum formosa-num var. pollinioides (Rendle) Ohwi.
Perennial, rhizomatous. Culms 0.7–1.9 m tall, 2–5 mm in diam., nodes glabrous, hirsute below panicle. Leaf sheaths longer or upper shorter than internodes; leaf blades flat or involute, 30–100 × 0.3–0.6 cm, pilose at base, otherwise glabrous, margins scabrid, base straight, apex long acuminate; ligule ca. 0.5 mm, margin ciliolate. Panicle obovate in outline, 15–24 cm, grayish white or pinkish, unbranched, axis 8–12 cm, shorter than racemes or subequaling lowest racemes, silky pilose; racemes 15–30, 11–12 cm, ascending or spreading; rachis internodes ca. 2.5 mm, silky villous, hairs 2–3 times spikelet length. Spikelets 3–3.6 mm; callus hairs short, ca. 0.5 mm; lower glume lanceolate, papery, brown, membranous and pallid near apex, back pilose with white or purplish hairs 2–3 times spikelet length, keels scabrid above, apex attenuate, minutely notched; lower lemma equaling glumes; upper lemma lanceolate, upper margins ciliate, apex subentire, awned; awn slender, 6–8 mm. Anthers 2, 1.5–2 mm. Fl. and fr. Aug–Nov.
* Open grassy hillsides. Fujian, Guangdong, Guizhou, Hainan, Jiangxi, Taiwan, Yunnan, Zhejiang.
Saccharum formosanum is closely related to Eulalia fastigiata (Nees ex Steudel) Stapf ex Bor (S. fastigiatum Nees ex Steudel; Erian-thus fastigiatus (Nees ex Steudel) Andersson) from Bhutan, NE India, and Nepal. The latter species differs in its slightly larger (3.5–4.7 mm) spikelets, shorter spikelet and internode hairs not much exceeding the spikelet, and possession of 3 anthers. The two species are undoubtedly congeneric, but lie on the boundary between Saccharum and Eulalia, and have been placed in different genera in recent Floras. The inflorescence axis is shorter than is usual in Saccharum, but longer than in Eulalia, in which genus the racemes are usually digitate. On balance, the two species seem best placed in Saccharum.