348 
91. CYPERACE^. 
Tribe I. Cijpere(P. 
1. Cyperus 
1. C. longus (L.); spikclets linear-lanceolate in erect tvnee 
compound umbels, ])eduneles of ])artial umbels erect unequal, 
stigmas 3, root creeping. — E. B. l.‘l()9. St. 52. 10. — St. trian- 
gular, 2 — .3 feet bigb. Umbel very large unequal, its stalks tri- 
angular and closely sheathed at the base, its base with 2 or 3 
long leaves. Glumes brownish-red, with green keels and pale 
margins. — South of England, rare. P. VIII. IX. E. 
2. C.fuscus (L.) ; spikclets linear-lanceolate in small roundish 
heads at the extremities of the branches, glumes spreading, stig- 
mas 3, root librous. — E. B. S. 2(>26. St. 52. 5. — A small nearly 
prostrate ])lant. Stems numerous, 2 — 5 in. long. Heads with 
.3 unequal 1. at the base. Glumes fuscous, with green keels. — 
Little Chelsea, Middlesex. Peat-j)ond, Shalford Common, 
Godaiming, Surrey. Mr. J. D. Salmon. Jersey. P.VIII. IX. E. 
2. ScHCENUS Linn. 
I. S. nigricans (L.); st. round naked, spikclets 5 — 10 col- 
lected into a terminal roundish head overtopj)cd by the lower 
bract, glumes scabrous at the keel. — U. jB. 1121. St. 40. 9.- — 
Root of strong black fibres. St. 8 — 12 in. high, clothed at the 
base with blackish-brown smooth shining scales some of which 
terminate in setaceous erect leaves which are shorter than the 
stem. Bristles variable in number, short, rough with upward 
spines. Stigmas 3. Anth. terminating in a jioint. Glumes 
dai’k-brown or black. — Tm-fy bogs. P. VI. 
Tribe II. Scirpea. 
3. Cladium Pat . Br . 
1. C. Mariscus (R. Br.) ; panicles lateral and terminal repeat- 
edly comijound, spikclets ca]>itate, st. roundish leafy smooth, 1. 
rough on the margins and keel. — E. B. 950. — Root creeping. 
St. 3 — 4 feet high. L. very long, rigid, narrowed and triquetrous 
towards the end, the margins and keel with fine but vei-y acute 
serratures. El. in each s])ikelet 1 — 3, but usually only one nut 
is produced. — Bogs and fens, rare except in Cambridgeshire. 
P. VII. Common Sedge. 
4. Rhynchospora Vahl . 
I. R. alha (Vahl); spikclets in a compact corymb about as 
long as the outer bracts, stain. 2, bristles with defiexed teeth. 
