537 
CYPERACEJE. (SEDGE FAMILY.) 
spikes 1-3, or the terminal spike androgynous and staminate at the base, tho 
rest all fertile.—Nos. 42-55. 
S2. Perigynia slightly inflated, smooth, nerved, obtuse and pointless or with a 
straight or oblique point. Scales brown, becoming tawny or white. Stam¬ 
inate spike solitary (except sometimes in No. 60) or androgynous and pistil¬ 
late above, the rest all fertile. — Nos. 56 - 68. 
3. Perigynia slightly inflated, hairy (in No. 70 smooth at maturity), nerved, with 
a minute straight point. Terminal spike androgynous, pistillate at the apex, 
the rest all fertile. — Nos. 69, 70. 
4. Perigynia not inflated, smooth, regularly striate, with a short, entire, oblique¬ 
ly bent or recurved point, remaining green at maturity. Staminate spike sol¬ 
itary. Bracts green and leaf-like (except in No. 71). — Nos. 71- 78. 
5. Perigynia not inflated, smooth or downy, not striate, with a minute, oblique¬ 
ly-bent white and membranaceous point, reddish-brown or olive-colored at ma¬ 
turity. Terminal spike all staminate, or with 2-3 fertile flowers at the base; 
the rest all fertile, or with a few sterile flowers at the apex. Bracts reduced to 
colored sheaths, or with a short green prolongation. — Nos. 79, 80. 
* * Perigynia with a distinct beak, either short and abrupt, or more or less prolonged. 
§6. Perigynia not inflated, hairy, with a rather abrupt beak, terminating in a 
membranaceous notched or 2-toothed orifice. Bracts short: culms mostly 
low and slender; leaves all radical, long and narrow. Staminate spike solita¬ 
ry. — Nos. 81 -86. 
7. Perigynia slightly inflated, hairy or smooth, with a short beak terminating in 
an entire or slightly notched orifice. Bracts long and leaf-like: culms tall and 
leafy. Staminate spike solitary (in No. 87 pistillate at the summit) : fertile 
spikes erect (except in No. 87). —Nos 87-89. 
8. Perigynia slightly inflated, smooth and shining, green, few-nerved or nerve¬ 
less, with a straight tapering beak terminating in 2 small membranaceous 
teeth. Staminate spike solitary: fertile spikes all on slender, pendulous 
stalks. —Nos. 90-93. 
9. Perigynia slightly inflated, smooth, nerved, with a tapering somewhat serru¬ 
late beak, terminating in 2 distinct membranaceous teeth; becoming tawny 
or yellow at maturity. Staminate spike solitary. — Nos. 94- 97. 
10. Perigynia slightly inflated, rough or woolly, with an abrupt straight beak. 
Staminate spikes usually 2 or more. —Nos. 93-101. 
11. Perigynia moderately inflated, smooth (except No. 105), conspicuously many- 
nerved, with a straight beak terminating in 2 rigid more or less spreading 
teeth. Staminate spikes 1 - 5. —• Nos. 102 -107. 
12. Perigynia much inflated, smooth, conspicuously many-nerved, with a long 
tapering 2-toothed beak. Staminate spike solitary. — Nos. 108-115. 
13. Perigynia much inflated, obovoid or obconic, smooth, few-nerved. with an ex- 
tremely abrupt, very long, 2-toothed beak, tawny or straw-colored at maturi¬ 
ty, horizontally spreading or deflexed. Terminal spike staminate, hr andro¬ 
gynous and fertile at the apex. — Nos. 116, 117. 
14. Perigynia much inflated, smooth, nerved (except No. 126), shining and straw- 
colored at maturity, with a tapering, more or less elongated, 2-toothed beak. 
Staminate spikes 2-3. — Nos. 118-126. 
A* Spike solitary , simple , dioecious or androgynous: bracts small , 
colored and scale-like. — Psyllophor/e, Loisel. 
§ 1. Spike dioecious , or with a few staminate flowers at the base. 
* Stigmas 2 : leaves all radical , bristle-form. 
1. C. dioica, L. Culm and leaves smooth , or minutely rough 
at the top j barren spike linear; fertile spike ovoid, loosely flowered ; 
