| 1 |
Stigmas 2, rarely 3 |
|
(2) |
| + |
Stigmas 3 |
|
(3) |
| |
|
|
|
| 2 (1) |
Female glumes red-brown, margins narrowly white hyaline; utricles red-brown above, pale stramineous below. |
|
201 C. przewalskii |
| + |
Female glumes pale brown, margins broadly white hyaline; utricles stramineous-green. |
|
202 C. yajiangensis |
| |
|
|
|
| 3 (1) |
Utricles ca. 2 mm. |
|
203 C. limprichtiana |
| + |
Utricles 3.5-7 mm |
|
(4) |
| |
|
|
|
| 4 (3) |
Rhizome stoloniferous |
|
(5) |
| + |
Rhizome without stolons |
|
(9) |
| |
|
|
|
| 5 (4) |
Female spikes densely many flowered |
|
(6) |
| + |
Female spikes loosely flowered |
|
(7) |
| |
|
|
|
| 6 (5) |
Female glumes obovate, ciliate on upper margins; terminal spike with long peduncle, remote from next lateral spike. |
|
204 C. chrysolepis |
| + |
Female glumes ovate-oblong, not ciliate on upper margins; terminal spike with short peduncle, near next lateral spike. |
|
205 C. drepanorhyncha |
| |
|
|
|
| 7 (5) |
All spikes androgynous, narrowly cylindric. |
|
206 C. karlongensis |
| + |
Terminal spike male, lateral spikes female, narrowly oblong |
|
(8) |
| |
|
|
|
| 8 (7) |
Utricles glabrous; female spikes oblong, 10-20 × 5-8 mm. |
|
207 C. tatsiensis |
| + |
Utricles densely hispid; female spikes narrowly cylindric, 25-45 × ca. 5 mm. |
|
208 C. brachyathera |
| |
|
|
|
| 9 (4) |
Utricles trigonous |
|
(10) |
| + |
Utricles compressed trigonous |
|
(12) |
| |
|
|
|
| 10 (9) |
Leaves longer than culm, with purple-red sheaths at base. |
|
209 C. purpureovagina |
| + |
Leaves shorter than culm, with dark brown sheaths at base |
|
(11) |
| |
|
|
|
| 11 (10) |
Peduncles 15-21 cm; utricles obovate-oblong, 4.2-4.5 mm. |
|
210 C. ridongensis |
| + |
Peduncles 2.5-5.5(-13) cm; utricles narrowly elliptic, ca. 4 mm. |
|
211 C. setosa |
| |
|
|
|
| 12 (9) |
Utricles with green or pale green margins |
|
(13) |
| + |
Utricles without green or pale green margins |
|
(14) |
| |
|
|
|
| 13 (12) |
Plants slender, 10-25 cm tall; leaf blades ca. 1 mm wide. |
|
212 C. hirtelloides |
| + |
Plants slightly stiff, 25-70 cm tall; leaf blades 1.5-3 mm wide. |
|
213 C. haematostoma |
| |
|
|
|
| 14 (12) |
Female glumes with ciliate upper margins |
|
(15) |
| + |
Female glumes not ciliate on upper margins |
|
(16) |
| |
|
|
|
| 15 (14) |
Utricles with curved beak. |
|
214 C. fulvorubescens |
| + |
Utricles with short beak. |
|
215 C. makinoensis |
| |
|
|
|
| 16 (14) |
Utricles with short beak or beakless |
|
(17) |
| + |
Utricles with long beak |
|
(20) |
| |
|
|
|
| 17 (16) |
Utricles hispid above |
|
(18) |
| + |
Utricles wholly hispid |
|
(19) |
| |
|
|
|
| 18 (17) |
Upper 2-4 spikes male; style scabrous. |
|
220 C. heshuonensis |
| + |
Upper 7-11 spikes male; style glabrous. |
|
221 C. graminiculmis |
| |
|
|
|
| 19 (17) |
Terminal spike gynaecandrous or male, upper 1 or 2 lateral spikes subsessile, near terminal spike. |
|
223 C. siroumensis |
| + |
Terminal spike male or with few female flowers at base, lateral spikes pedunculate, spaced. |
|
224 C. cranaocarpa |
| |
|
|
|
| 20 (16) |
Style scabrous or pubescent |
|
(21) |
| + |
Style glabrous |
|
(22) |
| |
|
|
|
| 21 (20) |
Basal sheaths disintegrating into reticulate fibers; utricles oblong- elliptic with erect long beak; style scabrous. |
|
222 C. plectobasis |
| + |
Basal sheaths disintegrating into parallel fibers; utricles lanceolate- trigonous with curved very long beak; style pubescent. |
|
217 C. scabrirostris |
| |
|
|
|
| 22 (20) |
Female spikes sessile, erect; leaf blades plicate, ca. 1 mm wide. |
|
218 C. kunlunsanensis |
| + |
Female spikes with peduncles 3-6 cm, pendent; leaf blades flat, 3-6 mm wide |
|
(23) |
| |
|
|
|
| 23 (22) |
Spikes 5-8; female spikes narrowly linear. |
|
219 C. regeliana |
| + |
Spikes 3-5; female spikes ovate to oblong-obovate. |
|
216 C. stenocarpa |
