110 MONOECIA— TRIANDRIA. Carex. 



apprehend, some of the reported places of growth of C. distans 

 belong. 



43. C. binei'vis. Green-ribbed Carex. 



Sheaths tubular, elongated, shorter than the flower-stalks. 



Fertile catkins cyhndrical, distant; partly compound. 



Scales pointed. Stem smooth. Fruit with two principal 



ribs. 

 C.binervis. <Sm. Tr. o/L. -Soc.t;. 5.268. H. Br. 993. Engl Bot. 



V. IS.tA 235. WUld. Sp. PI. v.4.271. '' Schk, Car, t. R, r, r. 

 /. 160/' WUld, 

 C. distans. Light/. 561. 



On dry heaths, in various parts of Britain. 



Very common on the driest moors about Aberdeen. Prof. Beattie. 

 Near Edinburgh. Mr, J,Mackay. Near Rippon. Mr. J. Brun- 

 ton. 



Perennial. June. 



Nearly twice the size of the last, notwithstanding its much more 

 dry and barren place of growth. Stem erect, firm, from 1 J to 

 near 3 feet high, bluntly triangular, and smooth, except at the 

 very top, where the angles are sharp and partly rough. Leaves 

 erect, flat, broadish, taper-pointed, ribbed, of a deep, though 

 glaucous, green j rough at the edges, and partially so at the 

 keel J very rough at the triangular point ; their sheaths smooth, 

 about half the length of the leaf itself, or more. Bracteas like 

 the leaves, but smaller and narrower, with smooth sheaths of 

 about the same proportion ; the upper one short, though equal 

 to the ad]o'm'mgJlower. stalk. The Qi\\ev flower -stalks are longer 

 than their sheaths, all triangular and roughish. Fertile catkins 

 3 at least, the 2 lowermost not above 3 or 4 inches asunder, in 

 which they accord with the usual proportion of other species, 

 not with C. distans; all cyhndrical, erect, blackish j often di- 

 vided, or slightly compound, at the base -, often consisting of 

 han-enjlorets, for nearly half their length, at their summits. 

 Scales like those of the last, with similar rough aw7is. Barren 

 catkin mostly solitary, erect, above an inch long, cylindrical, 

 dense j its scales very numerous, pointless, dark brown, with a 

 pale keel j but there are often a few harren Jlorets at the point 

 of several fertile catkins. Stam. 3. Stigm.3. Fruit ovate, un- 

 equally triangular, a little compressed, smooth, with a short, 

 broad, deeply cloven, scarcely rough-edged, beak; the inner 

 surface concave, pale, streaked with several equal purplish ribs 5 

 outer convex, paler, wdth a central prominent angle or keel, and 

 2 very distinct, elevated, smooth, green ribs towards the mar- 

 gin, though totally distinct from it, found perhaps in some other 

 species, quite unlike this, but not in any which, properly exa- 

 mined, can be confounded with it, especially C. distans. 



