CYPERUS. 357 



** Lowest glume empty or larger, sometimes all fertile. 

 t Bristles scarcely equalling the glume or wanting. 



5. Eleocharis. One or 2 lowest gl. larger, empty. Bristles 

 3 — 6. Nut compressed, crowned with the persistent dilated 

 base of the jointed style. 



6. SciRPUs. Glumes nearly equal, or 1 or 2 lowest larger 

 empty. Bristles about 6 or 0. IVwf plane-convex or tri- 

 gonous ; base of the style filiform, not dilated, jointless. 



7. Blysmus. Two lowest gl. largest and empty. Bristles 

 3—6. Nut plane-convex, tipped with the not dilated base 

 of the jointless style. Spiielets bracteated, alternate, forming 

 a close distichous compound terminal spike. 



tt Bristles ultimately much exceeding the glumes. 



8. Eriophorum. Glumes nearly equal, lowest sometimes 

 empty. Bristles ultimately silky. Nut trigonous. 



Tr. III. ELYNEM. Fl. diclinous. Perigone or formed of 

 1 or 2 scales. 



9. KoBRESiA. Spikes aggregate. Lower fl. fem., perigone 

 of 1 scale inclosing the germen and covered by the glume. 

 Upper fl. male, without any perianth. 



Tr. IV. CARICEM. Fl. diclinous. Nut completely inclosed 

 in the urn-shaped perigone. 



10. Carex. Fl. in imbricated spikes, each covered by a 

 glume. Female fl. witli a single urn-shaped persistent peri- 

 gone, 1 style and 2 — 3 stigmas. Male fl. of 3 stam., with- 

 out a perianth. 



Tribe I. Cyperece. 



1 . Cyperxjs Linn. Galingale. 



1. C. lovgus(h.); spikelets linear-lanceolate in twice com- 

 pound umbels, peduncles of partial umbels erect imequal, stig- 

 mas 3, root creeping.— £. B. 1309. St. 62. 10. — St. triangular, 

 2 — 3 feet high. Umbel very large, lax, unequal, 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.fuscws {L.); spikelets linear-lanceolate in small roundish 

 heads at the extremities of the branches, gl. spreading, stigmas 3, 

 root fibrous. — E. B. S. 2626. St. 62. 6. — A small nearly pro- 

 strate plant. Stems many, 2 — 5 in. long. Heads with 3 un- 



