CXLI. CYPERACES. 
rarely membranous. 
417 
Stamens hypogynous, commonly 3; but 
varying from 1-12; anthers basifixed, 2-celled, often crested. 
Ovary 1-celled ; style 2 - or 3-fid ; 
ovule 1, erect. 
like envelope). 
true “sedges.” 
or more commonly 3-angled, solid culms ; 
stigmas undivided or 2- fid ; 
Fruit an achene (sometimes enclosed in a bag- 
Embryo in the base of floury albumen.—The 
Tufted or creeping-rooted plants, with terete 
leaves with entire 
(not split) sheaths, and variously arranged inflorescence. Found 
in wet and dry places in all parts of the world. 
(1) Flowers bisexual; rarely a few male or female 
intermixed. 
Glumes 2-ranked (distichous). 
Perianth 0. 
Spikelets many-flowered. 
Style filiform, not swollen at base. 
Achene destitute of circling disk. . 1. 
Achene in a lobed, top-shaped disk . 25. 
Style with a much-swollen base, jointed 
to the ovary and deciduous. . . . 9. 
Spikelets 1-few-flowered. 
Style filiform, not swollen at base. 
Achene destitute of encircling disk. 
Style 3-fid; spikelets in loosely 
tufted spikes or umbels . . . 2. 
Style 2-fid; spikelets in eee) 
compacted heads 
Achene in a cup-like triangular disk . 26. 
pal 
Stamens 5-8 (or 3) (lower flowers male) 18. 
Style with a swollen, bulb-like base. 
Stamens 3 (lower flowers male) 
Perianth of bristles, scales, or tubular and 
bearing bristles. 
Perianth of bristles. 
Style tuberous at base. 
Perianth of 8 long, hispid bristles ; 
style long, 6-fid at apex 
Perianth of 5, unequal, 
bristles, 3 of them pubescent 
Perianth of 6, hispid or Sg er bris- 
tles; style 3-fid . . 
Style equal at base; bristles 3 
or plumose : 
Perianth of 3, narrow, 3- fid scales ; . the lobes 
bristle- -shaped ; 
Perianth tubular, crowned with 6 capillary 
bristles ; spikelets 1-flowered . : 
Glumes imbricated on all sides. 
Perianth of bristles or scales. 
Style tuberous at base. 
Culms leafless, bearing solitary, terminal 
subhyaline 
3-6, “rough 
spikelets . .. . 4. 
Culms leafy ; spikelets capitate corym 
bose or panicled. . wal 
5, dl) 
7205 
CYPERUs. 
HEMICHLENA. 
ABILDGAARDIA. 
Mariscus. 
3. KYLLINGIA. 
ACROLEPIS. 
LeEpIsIA. 
HLYNANTHUS. 
BUuEKIA. 
IDELERIA. 
. ASTEROCHETE. 
. CHRTOSPORA. 
. TRIANOPTILES. 
23. CYyaTHOCOMA, 
EXLEOCHARIS. 
5. RHYNCHOSPORA. 
25 
