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FOC | Family List | FOC Vol. 23 | Carex

263. Carex transversa Boott in A. Gray, Narr. Exped. China Japan. 324. 1857.

横果薹草 heng guo tai cao

Carex brownii Tuckerman var. transversa (Boott) Kükenthal.

Rhizome short. Culms tufted, 30-60 cm tall, acutely triquetrous, clothed with purple-brown bladeless sheaths at base. Leaves shorter than or slightly longer than culms, blades 3-5 mm wide, flat, rather soft; sheaths rather long. Involucral bracts longer than subtending spike, leaflike, sheathing portion ca. 1/2 length of subtending peduncle. Spikes 3-5, upper 2 or 3 slightly contiguous, lower ones rather remote; terminal spike male, narrowly cylindric, 1-1.5 cm, with peduncle; lateral spikes female, broadly cylindric or suboblong, 2-3 cm, densely many flowered, with rather long peduncle. Female glumes pale and hyaline laterally, ovate, 4-5 mm, membranous, green 1-3-veined, apex acuminate, with a long awn. Utricles brown-green, obliquely patent, longer than or as long as glume (including length of awn), ovate or elliptic-ovate, slightly inflated trigonous, 5-6.5 mm, membranous, glabrous, conspicuously several veined, base broadly cuneate, apex gradually attenuate into a long beak, orifice obliquely truncate or minutely 2-toothed. Nutlets yellowish, subloosely enveloped, broadly obovate, trigonous, ca. 3 mm, base stipitate, apex mucronate; stigmas 3. Fl. and fr. Apr-May.

Forests, grasslands, wet places; 500-800 m. Anhui, Fujian, Guangdong, Hunan, Jiangsu, Jiangxi, Zhejiang [Japan, Korea].


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