CdrexJ^ 



CVL CTPERACE^i 



507 



scales. C. Buxbaumi: 

 Schhh X G. g. f. 76. 



Wahl : E 



C. polygama' 



On a small island near Toom Bridge, in Lough Neao-h, Ireland. 

 %. 7. —Root creeping. Stem 1—2 h. high, erect, acutely' triangular,' 

 rough, leafy at the base, and clothed with purple sheaths which are 

 torn and reticulated at their edges. Leaves straight, shorter than 

 the stem. Middle spikes smallest, more or less approximate. Brae 

 teas rough, aurlcled, but without sheaths, the lowest sometimes 

 longer than the stem, upper ones setaceous. ' Fruit glaucous-green, 

 stained with brown, shorter at the base of the spikelets than the cus- 

 pidate scales, which are brown with a pale green nerve. 



26. C. atrdta L. (hlach C) ; spikelets 3 — 4 oblong, terminal 

 one barren at the base fertile contiguous shortly-stalked in- 

 clined, lowest one on a longer stalk and rather distant at 

 length drooping, lower bractea foliaceous, sheaths scarcely any, 

 fruit elliptical triquetrous (when ripe) broader but rather- 

 shorter than the acute glumes, beak terete short bifid at the 

 point. E. B. t. 2044. 



On the Welsh mountains ; Snowdon, rare. Roclcy cliffs on the 

 top of a hill near Hartfell, Dumfries-shire; Breadaibane, Clova, and 



other Highland mountains, Scotland. 11 6,7 About 



high. Leaves usually broad for the size cf the plant, 

 brown, ppaque. Fruit pale yellowish-brown, at first compressed^ 

 but as it ripens exhibiting 3 angles towards the base, at length 

 triquetrous. ° . 



1 foot 

 Glumes dark 



V. Terminal spikelets barren, 1 



3 



Stigmas 2. 



(or more) ; the rest fertile. 



* Beak of fruit entire. 

 t Margin of leaves involute when dry: sheaths not flamentose. 



27. C. vulgaris Fries (common C.) ; spikelets cylindrical 

 T°\^ rarely 2 barren, fertile 3-4, lower one shortly stalked, ' 

 sheaths none, lower bractea subfoliaceous with small round 

 dark auricles, glumes elliptic or oblong obtuse, fruit plano- 

 convex elhptic or obtuse with filiform nerves which disappear 

 upwards and an obsolete or evident entire beak. C. cajspitosa 

 W. ; E. B. t. 1507. C. angustifolia Sm. in E. Fl. iv. p. 127. 

 t. boodenovn Gay in Ann. Sc. Nat. 2d ser. xi. p. 191. 



Marshes and wet pastures, frequent. U. 5, 6 A foot or more 



igh. Stem weak, acutely triangular. Jloot creeping, laxly cjEspI- 

 Jose. Leaves slender, their sheaths not filamentous. Fruit pos- 

 rn"°!i- u ■''*' ^— -^-nerved, anteriorly convex, 7— 9-nerved. Jchene.s 

 roundish, obtuse, with a short slender beak. We adopt the name' 

 g yen to this extremely common, but confused species, by Fries, 

 being certainly older than that of Gay. 



28. C. GibsoniBah. (Gibson's C.) ; « spikelets erect, barren 

 A, lertile 2—4 narrowed downwards slightly stalked, bracteas 



Z 2 



