400 97. CTPEBACEJE. 



the fruit, bracts none or one very short. — U. B. 1920. Schh. E. 

 35. -ff. a. 32. R. 218.— St. 1—2 feet high, triquetrous. Gl. 

 ovate, dark hrown with a green keel and whitish edges, hlunt, 

 sometimes apiculate. Upper spikelets crowded, lower lax but 

 not distant. — Marshes, rare. P. VI. E. I. 



21. C. canescens (L.) ; spikelets 4 — 6 elliptic contiguous, fr. 

 erect acute plane-convex faintly striate, heak short notched not 

 split rough at the edges, nut elliptic beak very short style per- 

 sistent, glumes ovate shorter than the fruit. — E. B. 1386. Schk. 

 C. 13. -H. 206. C. curta, Good. — St. a foot high, triquetrous, 

 smooth except at the top. Lowermost spikelet often with a 

 setaceous bract. Glumes membranous, whitish with a green 

 keel, bhmt, apiculate. Fr. whitish.— Bogs. P. VI. E. S. I. 



22. C. vit'ilis (Fr.) ; spikelets 4 — 8 ovate or oblong contiguous, 

 fr. erect ovate plane-convex faintly striate, heak short split to its 

 base externally rough at the edges, " nut elliptic," glumes ovate 

 shorter than the fruit. — C. curta /3. alpicola Wahl. C. Fersoonii 

 Sieb., R. 206. — Creeping. St. 6 — 12 in. high, triquetrous, 

 smooth except at the top. Lowermost spikelet often with a 

 setaceous bract. Gl. membranous, brovm with a white margin. 

 — Moimtains. P. VH. VIIL E. S. 



4.4. Spikes fuscous. 



23. C. lagopina (Wahl.) ; spikelets 3 — 4 roundish-elliptic 

 contiguous terminal one longer, fr. erect elliptic acuminate 

 plane-convex narrowed below nearly entire at the point with 

 smooth edges, nut elliptic tipped with the persistent style, gl. 

 ovate nearly as long as the fruit. — H. a. 24. B. 206. C. lepo- 

 rina Linn. Fl. Lap. not Fl. Suec.—E. B. S. 2815.— St. 4—8 in. 

 high, smooth, triangular. Glumes reddish with the edges paler. 

 Fr. yellow. — Loch na Gar, and Cairn Toul, Aberdeenshire. 

 P. VIII. S. ' 



24. C. ovdlis (Good.) ; spikelets about 6 oval contiguous, fr. 

 erect ovate-attenuate plane-convex narrowed below bifid at the 

 point with membranous edges serrulate above, nut eDiptic with a 

 short cylindrical beak ending in a persistent style, gl. lanceo- 

 late as long as the fruit. — E. B. 306. Schh. B. 8. C. leporina 

 L. Fl. Suec. II. a. 22. R. 211.— St. 1—2 feet high, triangular, 

 smooth, or roughish above. Gl. acute, brown with a paler mem- 

 branous margin. Fr. yellowish. — Meadows. P. VII. E. S. I. 



iii. HeterostachyiB. One or more terminal spikes wholly or rarely 

 only partially male, others axillary fertile. (Sp. 25 — 71.) 



* Beak of fr. short, entire or emarginate or shortly 2-toothed. 



t Nut plane-convex. Stigmas 2 — 3. Male spikes 1 or more. 



