532 cyperacea: 



with grass-like, cliiefly radical leaves ; moncecious, or rarely 

 dioecious flowers, the stamens and ovaries being always in separate 

 glumes, either in different parts of the same spikelet, which is 

 then called "mixed,'' or in separate sp'ikelets ; glumes imbricate; 

 stamens 3, rarely 2, without a perianth ; ovary enclosed in a vase- 

 shaped covering; style protruding; stigmas 2 — 3. (Name Classical, 

 connected with the Greek keiro, I cutj in allusion to the sharp- 

 edged leaves.) 



t Spikelet simple, solitary ,^and terminal 



1. C. dioica (DiiX'cious Sedge). — A^ slender plant, 6 — 12 in. 

 high, with ruirners ; leaves very narrow,^ smooth ; spikelets bearing 

 stamens only or pistils only, and with stamens and pistils on 

 different plants, brown, the staminate ones cylindric and pale, 

 the pistillate ovoid, brown ; style 2-cleft ; fruit erect, with rough 

 edges. — Spongy bogs ; common. — Fl. May, June. Perennial. 



2. C. Davallicina (Davall's Sedge), -a tufted plant, without 

 runners, with rough edges to its leaves and drooping /j-tf/Z, occurred 

 formerly near Bath, but has been lost through drainage. 



3. C. pulicdris (B'lea Sedge). — A small tufted plant, without 

 runners, 3 — 8 in. high; leaves narrow, erect, involute; spikelet 

 about nine lines long, the upper half bearing stamens ; 3 to 7 of 

 the lower glumes enclosing pistils ; style 2-cleft ; fruit oblong, 

 pointed, about 2 lines long, drooping when ripe. — Bogs ; common. 

 — Fl. May, June. Perennial. 



4. C. ruphtris (Rock Sedge). — A creeping, tufted plant, with 

 runners; stems 3 — 6 in,, 3-edged ; /e^e'Cf' flat, stiff, revolute, ending 

 in a wavy, rough point; spikelet -J-^i in. long, linear, dark 

 brown, shiniirg, the upper half stamiriate ; style 3-cleft ; fruits 

 oliovate, adpressed. — Lofty Scottish mountains, — Fl. July, August, 

 Perennial, 



5. C. paucifUra (Few-flowered Sedge.), — A slender species, with 

 long runners; stem seldom more than 6 in. high, slender, 3-angled, 

 smooth ; leaves narrow, involute ; spikelts pale brown, :; or 4 

 lines long ; flowers few, the 2 or 3 uppermost staminate, the 2 or 

 3 lower ones pistillate ; styles 3-clcft ; fruit narrow and pointed, 

 reflexed. — Moorland bogs in the nortli.--Fl. June, July. Perennial. 



ft Spiliclets several, all similar, short, sessile, in a coinpouiul 

 spike, miisllv with botli s-tauiinate and pistillate flowers ; styles 

 2-cleft 



6. C. incurva (Curved Sedge). — Rout, stock long, creeping ; stems 

 stout, 2 — 3 in. high, nsn.-rlly curved, so as to bring the lai'ge head 

 of spikelets down to the ground ; leaves channelled, involute. 



