Carex chlorocephalula F. T. Wang & Tang ex P. C. Li

Jin, Xiao-Feng, Cen, Jia-Meng, Hahn, Marlene, Lu, Yi-Fei & He, Jin-Jing, 2015, Notes on Carex (Cyperaceae) from China (II): a taxonomic revision of sect. Radicales (Kük.) Nelmes, Phytotaxa 217 (2), pp. 117-132 : 122-124

(2) Carex chlorocephalula F. T. Wang & Tang ex P. C. Li (in Li 1990: 143). Type:— CHINA. Yunnan: Dali, Cangshan , 16 Sep 1934, M. Chen 2836 (holotype, PE!; isotype, KUN!) ( Figure 3 : A–E) .

Perennial herbs. Rhizomes short.Culms densely caespitose, 6–30 cm tall, ca. 1 mm thick, trigonous, densely hispidulous, with brown and persistent sheaths at base. Leaves equal to culms; blades 1.5–3 mm wide, flat, soft, densely hispidulous on both surfaces, slightly revolute at margins.Involucral bracts leaf-like, shorter than inflorescence, densely hispidulous, sheathed. Spikes 2 or 3, cylindrical, 10–15 mm long, 3–3.5 mm wide, androgynous, terminal 2 usually exerted from a bract sheath, lateral 1 exerted from base of culm, long peduncled; staminate part of spike shorter than or equal to pistillate part. Staminate scales ovate, 2.5–3.5 mm, acute at apex, pale green, green 1-veined costa. Pistillate scales oblong, ca. 3.5 mm long, attenuate and mucronate at apex, yellowish green, green 3-veined costa. Perigynia green, slightly longer than scales, oblong-obovoid, compressed trigonous, ca. 4 mm long, densely hispidulous, 2-veined laterally and thinly veined, shortly stipitate at base, ciliate at margins, abruptly contracted into a short beak at apex; orifice shortly 2-lobed with minute teeth. Achenes oblong-obovoid, compressed trigonous, ca. 2 mm long, attenuate at base, brown at maturity, abruptly contracted into a beak at apex; styles short, thickened and ovoid at base; stigmas 3.

Additional specimens examined:— CHINA. Yunnan: Jingdong, Jinhu, S. G. Xu 5297 (KUN) ; Mount. Wuliang, B. Y. Qiu 53687 (PE). Lijiang, Longshan, Qinghai-Tibet Exped. 14985 (PE). Songming, Kuotung, P. I. Mao 132 (KUN). without precise locality, anonymous s. n. (PE) .

Figures

FIGURE 3.A–E: Carex chlorocephalula F.T.Wang & Tang ex P.C. Li. (A) habit; (B) staminate scales; (C) pistillate scale; (D) perigynium; (E) achene. F–K: Carex radicalis Boott. (F) habit; (G) spike; (H) staminate scales; (I) pistillate scale; (J) perigynium; (K) achene. L, M: Carex delavayi Franch. (L) spike; (M) perigynium. (A–E drawn from M. Chen 2836 in PE, F–K from J. D. Hooker s. n. in BM, L, M from J. M. Delavay 1739 in P; drawn by Xiao-Feng Jin).