392 
Cyperaceee. 
— Spikelets 4-8, the lower rather distant. Fr. finely 
streaked . ....... 28 
27. Stem smooth or only slightly rough under the spike. 
Fr. flat-convex. C. approximata Hopp.—High Alp. on 
granite; not common. 7 . . lagopina Wahlb. 2312. 
— Stem rough, especially above. Fr. compressed-3-cornered. 
Peat-bogs ; Y. O. B. J. U. L. 6 Heleonastes Ehrh. 2313. 
28. Spikelets greenish white, ovoid-oblong. Fr. with a very 
short, faintly notched, beak not cleft on the back.— 
Damp meadows; distrib. 5 . . canescens L. 2314. 
— Spikelets brownish, ovoid-globular. Fr. with a short 
beak, cleft from end to end on the back. C. Personii 
Lang, C. vitilis auct.—Alp. 6 brunescens Poir. 2315. 
III. Heterostachyae. 
29 (8). Stigs 2 ... . 30 
— Stigs 3 ........ 30 
30. Fr. terminated by a bi-dentate beak . . . 31 
— Fr. glabr., with no beak at all, or with a cylindric beak, 
not toothed . . . . . . . . 32 
31. Fr. slightly hairy. Ls bristle-like, channelled, curved.— 
Alp. ; G. T. A. 6 . . . mucronata All. 2316. 
— Fr. glabr. Ls narrow-linear, deeply channelled, com¬ 
pressed-flat at the top. C. dioica-echinata?—Marshes; 
Yevey, Amsoldingen, Cappel, Canton Zurich, Bregenz. 6 
Gaudiniana Guthn. 2317. 
32. Lowest bract sheathing. Spikelets 3, variegated with 
brown and green, the terminal one only bearing male fls 
at the base.—High Alp., rare; G. T. W. Y. U. 7 
bicolor All. 2318. 
— ilracts without, or with very short, sheaths . . 33 
33. Rt-stock thickly tufted, without stolons. Sheaths of the 
ls all, or at least the lower ones, worn into ragged fibres. 
Stems bearing at the base leafless sheaths and, rather 
higher, ls. Type of C. ccespitos .... 31 
— Rt-stock producing more or less long stolons. Sheaths 
of the ls (gen.) not worn into ragged fibres. Stems 
with ls from the base. Type of C. acuta. . . 33 
34. Ls glaucous; sheaths yellowish brown. Fr. compressed, 
strongly nerved. Stems 40—60 cm. PI. forming thick 
strong mats.—Marshes; water-side; distrib. 4 
stricta Good. 2319. 
— Ls light green (almost yellowish); sheaths blackish red. 
Fr. convex on both sides, without, or with faint, nerves. 
Stems lower, slenderer, limp. C. pacifica Drej.—As the 
last; indicated near Locle, and between Burgdorf and 
Strattlingen. 4 .... * caespitosa L. 2320. 
