生活型

herb

形態特徵

• Stemless annuals.
• leaves radical, linear, ribonlike, glabrous, 1.5-7.5 cm long, 1-2 mm wide, apex attenuate, 4 or 5-nerved; peduncles numerous, glabrous, 6-17 cm long, (4-)5(-6)-ribbed, twisted, sheath tubular, bladeless, glabrous, 1-2.5 cm long, apex oblique; heads obovoid to subglobose, 3-5 mm long, 3-4 mm in diam.; involucral bracts obovate, membranaceous, pale brown, glabrous, apex obtuse to rounded, folded inward, 1.5-2 mm long, 1 mm wide; receptacle pilose; floral bracts oblong to lanceolate-oblong, apex acute, base cuneate, 2.5 mm long, 0.6-0.7 mm wide, membranaceous, hyaline, glabrous or with sparse white clavate hairs on back, midrib pale brown or black.
• Staminate flowers: calyx spathe like, open on one side, ellipsoid, 2 mm long, 0.6 mm wide, apex trilobate, black, with white clavate hairs apically, central lobe sometimes folded inward; corolla tubular, trilobate, with white clavate and glandular hairs apically; anthers 6, pale-yellowish, filaments opposite corolla lobes longer than others. Pistillate flowers: sepals 2 or 3, free, filiform, lateral ones 1 mm long, central one absent or 0.7 mm long, margin pilose; petals none; ovary 3-locular, glabrous; stigmas 3, shorter than style.
• Seeds broadly ovoid, 0.3-0.4 mm long, pale brown, transverse reticulate, without appendages.

分布

• 台灣 : in rice paddies and other wet places, throughout.
• 世界 : Australia, Korea, the Rukyus and Japan, China, the Philippines, Malaysia, Vietnam, Indochina, India, Nepal, Sri Lanka and Africa.

引證標本

ILAN: Toucheng, Yuentungshi, S. S. Ying s. n. 1987 (Holotype of Eriocaulon taiwanianum S. S. Ying, NTUF).TAIPEI: Kawakami s. n. 1908; Kuting, Shimada s. n. 1914; Tasoshan, Shimada s. n. 1915; Hsintien, Wantan, Shimizu 2333; Palifen, Kawakami & Sasaki s. n. 1910; Chinshan, Shimada 121; Sanhsia, Shimada 1041; Chengfu, Mori s. n. 1937; Kuanghsing, Yang s. n. 1995; Kunliao, Fulung, Li 718. TAOYUAN: Pate, Suzuki 21414; Kawakami s. n. 1914. HSINCHU: Hsinpu, Shimada s. n. 1915. NANTOU: Shuiwei, Ito s. n. 1916; Lienhuachih, Yamamoto & Mori s. n. 1932; Chekuanliou, Kuo 3477. TAINAN: Akoten, Shimada s. n. 1913 (Isotype of Eriocaulon formosanum Hayata, TAIF); Houpi, Mori 584. PINGTUNG: Kuitzecha, South Cape, Liu & Keng 2751; Hengchun, Ito s. n. 1909.

引用文獻

• LI, Sung-Po and HSIEH, Chang-Fu, Flora of Taiwan, second edition 5: 183. 2000.  (Fl. Taiwan 2nd edit., 台灣植物誌第二版)