All Floras      Advanced Search
FOC Vol. 23 Page 300, 310 Login | eFloras Home | Help
FOC | Family List | FOC Vol. 23 | Cyperaceae

13. CAREX sect. ACROCYSTIS Dumortier, Fl. Belg. 147. 1827.

玉簪薹草组 yu zan tai cao zu

Authors: Lun-Kai Dai & Tetsuo Koyama

Culms usually rather short. Leaf blades narrow, lower leaf sheaths red-brown. Involucral bracts shorter than inflorescence, blades scalelike or lowermost one linear or setaceous. Spikes 3-5, rather contiguous; terminal spike male; lateral spikes female, sessile or subsessile. Female glumes red-brown. Utricles obliquely patent, obovate or ovate, inflated trigonous, membranous, usually hirtellous, apex shortly beaked, orifice emarginate or slightly 2-toothed. Nutlets tightly enveloped, trigonous; style base not thickened; stigmas 3.

About 35 species: circumboreal in Asia, Europe, and North America; five species in China.

1 Utricles distinctly veined   (2)
+ Utricles obscurely veined or nerveless   (3)
2 (1) Leaf blades glabrous; female glumes ovate, ca. 2 mm, costa not projecting beyond apex forming a mucro; utricles obovate, 2.5-3 mm.   66 C. globularis
+ Leaf blades hispid; female glumes oblong, ca. 4 mm, costa usually projecting beyond apex forming a mucro; utricles oblong-obovate, 4-4.5 mm.   67 C. ulobasis
3 (1) Involucral bracts scalelike; female glumes mucronate at apex.   70 C. vanheurckii
+ Lower involucral bract blades leaflike, sometimes rather narrow, upper ones scalelike; female glumes not mucronate at apex   (4)
4 (3) Female glumes broadly ovate, 2.2-2.5 mm; utricles obovate, 2.5-2.8 mm, yellowish green.   68 C. chinganensis
+ Female glumes ovate, ca. 3 mm; utricles oblong-obovate, 3-3.5 mm, yellowish brown.   69 C. amgunensis

Lower Taxa


Flora of China @
Browse by
Advanced Search

Flora of China Home




 |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |