| 1 |
Nutlet contracted on angles or excavated at faces |
|
(2) |
| + |
Nutlet neither contracted on angles nor excavated at faces |
|
(11) |
| |
|
|
|
| 2 (1) |
Nutlet contracted on angles |
|
(3) |
| + |
Nutlet not contracted on angles |
|
(6) |
| |
|
|
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| 3 (2) |
Nutlet excavated at faces. |
|
103 C. chungii |
| + |
Nutlet not excavated at faces |
|
(4) |
| |
|
|
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| 4 (3) |
Leaves not trabeculate; utricles 2-2.5 mm. |
|
94 C. foraminata |
| + |
Leaves trabeculate; utricles 3.5-5 mm |
|
(5) |
| |
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|
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| 5 (4) |
Peduncles of female spikes mostly included; nutlets ca. 2 mm. |
|
97 C. tungfangensis |
| + |
Peduncles of female spikes mostly exserted; nutlets ca. 4 mm. |
|
95 C. tianmushanica |
| |
|
|
|
| 6 (2) |
Utricle distinctly convex adaxially, beak recurved; nutlet only slightly excavated at lower part of face. |
|
98 C. foraminatiformis |
| + |
Utricle indistinctly convex adaxially, beak erect; nutlet excavated at both upper and lower part of face |
|
(7) |
| |
|
|
|
| 7 (6) |
Leaf sheaths and blades puberulent. |
|
102 C. duvaliana |
| + |
Leaf sheaths and blades glabrous |
|
(8) |
| |
|
|
|
| 8 (7) |
Utricles ovate-fusiform, 2.5-4 mm. |
|
100 C. dolichostachya |
| + |
Utricles elliptic-rhombic, oblong-ellipsoid, or rhombic-oblong, 2.5-3 mm |
|
(9) |
| |
|
|
|
| 9 (8) |
Male spike 25-45 mm; nutlet 2.5-3 mm. |
|
96 C. qingliangensis |
| + |
Male spike 10-30 mm; nutlet 1.5-2 mm |
|
(10) |
| |
|
|
|
| 10 (9) |
Female spike linear-cylindric, 2-2.5 mm wide, loosely flowered. |
|
101 C. rugata |
| + |
Female spike cylindric or oblong-cylindric, 3-4 mm wide, densely flowered. |
|
99 C. sociata |
| |
|
|
|
| 11 (1) |
Utricles lanceolate-ovate, 3.5-4.5 mm |
|
(12) |
| + |
Utricles ellipsoid, ovoid, or ovate-fusiform, 2-3(-4) mm |
|
(13) |
| |
|
|
|
| 12 (11) |
Spikes usually 2; terminal male spike ovate-clavate; lateral spike androgynous. |
|
107 C. shanghangensis |
| + |
Spikes 2-4; terminal male spike linear-oblong; lateral spikes female. |
|
108 C. orthostemon |
| |
|
|
|
| 13 (11) |
Lower involucral bracts hardly or shortly sheathing (3-7 mm) |
|
(14) |
| + |
Lower involucral bracts long sheathing (1-3 cm) |
|
(19) |
| |
|
|
|
| 14 (13) |
Male spike shortly pedunculate, base not surpassing next female spike |
|
(15) |
| + |
Male spike long pedunculate, base surpassing next female spike |
|
(16) |
| |
|
|
|
| 15 (14) |
Male spike pale brown; female spikes linear to linear-cylindric, 2-3 mm wide. |
|
106 C. mitrata |
| + |
Male spike pale green; female spikes ellipsoid to ovoid, more than 3 mm wide. |
|
109 C. breviculmis |
| |
|
|
|
| 16 (14) |
Utricles rhombic-elliptic to broadly ovate or obovate |
|
(17) |
| + |
Utricles ovate-elliptic or ovate-oblong |
|
(18) |
| |
|
|
|
| 17 (16) |
Utricles puberulent, stipe very short and not conspicuous. |
|
110 C. hypochlora |
| + |
Utricles only sparsely puberulent, stipe conspicuous though short. |
|
113 C. subebracteata |
| |
|
|
|
| 18 (16) |
Rhizome slender, long creeping; costa of female glumes not excurrent beyond apex. |
|
119 C. nervata |
| + |
Rhizome short; plants densely tufted; costa of female glumes excurrent into a mucro. |
|
120 C. kiangsuensis |
| |
|
|
|
| 19 (13) |
Male glumes usually connate at margin forming a cuplike structure; most spikes fastigiate to subfastigiate; male spike linear |
|
(20) |
| + |
Male glumes scalelike, not connate at margin; spikes racemose; male spike ovate-cylindric |
|
(21) |
| |
|
|
|
| 20 (19) |
Leaves slightly verruculose on upper surface; male glumes with margins connate. |
|
105 C. pseudotristachya |
| + |
Leaves not verruculose on upper surface; male glumes with margins connate or free. |
|
104 C. tristachya |
| |
|
|
|
| 21 (19) |
Female spike ovate, ovate-oblong, or cylindric, 4-5 mm thick, with denser utricles |
|
(22) |
| + |
Female spike linear to linear-cylindric, rarely oblong-ovate, 2-3 mm thick, with rather lax utricles |
|
(24) |
| |
|
|
|
| 22 (21) |
Utricle nearly beakless, orifice entire. |
|
111 C. davidii |
| + |
Utricle shortly beaked, orifice minutely or acutely 2-toothed |
|
(23) |
| |
|
|
|
| 23 (22) |
Female glumes pale; utricle sparsely puberulent. |
|
112 C. breviaristata |
| + |
Female glumes pale or stramineous and pale brown on upper margins; utricle glabrous. |
|
114 C. qiyunensis |
| |
|
|
|
| 24 (21) |
Leaf blade hairlike, up to 2 mm wide. |
|
115 C. capilliformis |
| + |
Leaf blade 2-4 mm wide |
|
(25) |
| |
|
|
|
| 25 (24) |
Beak of utricle ± recurved, orifice toothless. |
|
116 C. polyschoenoides |
| + |
Beak erect, orifice 2-toothed |
|
(26) |
| |
|
|
|
| 26 (25) |
Utricle densely puberulent; female glumes with mucro; nutlet gray-black, ovate, shortly stipitate. |
|
117 C. pisiformis |
| + |
Utricle glabrous; female glumes without mucro; nutlet ashy brown, ellipsoid, not stipitate. |
|
118 C. hezhouensis |
