Prof. Dewey on Cartography. 349 



gentibus bidentatis margine subseabris, squamam ovatam acutam 

 subpaulo superantibus. 



Culm 1-3 feet high, erect, wide- triquetrous and acute on edges, 

 sometimes small and slender and with a few scattered spikelets ; 

 leaves lanceolate and rough on the edges, subradical ; spike often 

 long and large and more than decompound with densely aggrega- 

 ted spikelets, staminate above ; fruit ovate, broadish, tapering into a 

 beak, two-toothed, subscabrous on the margin; stigmas two; pis- 

 tillate scale ovate acute, narrower and a little shorter than the fruit. 



A well known species over Europe, and very different, though 

 resembling our C. stipata, Muh. ; but it was not detected in our 

 country till a few years since by Mr. Sullivant in Ohio, and later 

 by Dr. Mead and Dr. Vasey in distant localities in Illinois. 



No. 239. C. scabrior, Sartwell in Uteris. 



Spica composita vel decomposita arete ramosa, interdum non 

 ramosa; spiculis ovatis parvis dense aggregatis raro bracteatis 

 superne staminiferis ; fructibus distigmaticis latis convexis rostra- 

 tis bidentatis margine perscabris serrulatis, squama ovata acuta 

 vix duplo longioribus; foliis culmisque margine perscabris. 



Culm two feet high, erect, stiff, rather slender for its height, 

 triquetrous, very scabrous on the edges, leafy on the culm towards 

 the root ; leaves linear, flat, striate, sometimes long as the culm, 

 scabrous on the edges, long acute; spike compound, sometimes 

 nterrupted, two inches or more long, and oftener decompound 

 with many dense spikelets on the branches below and dense also 

 towards the apex of the spikelets ; stigmas two ; fruit broad ovate, 

 convex, rostrate, bidentate, on the margin serrulate; pistillate 

 scale ovate, acute, less than the fruit and about half as long; the 

 bract scale under the spikelets ovate, cuspidate, surpassing the 



fruit ; plant rather dark green. 



Found by Dr. Sartwell near Penn Yan some years ago, but not 

 determined till lately ; it may possibly be the true C. vuljpin&ideu, 

 Mx., to which has been credited C. multiflora, Muh. It differs 

 much from the latter, but is nearer C. setacea, Dew., which is 

 clearly distinct from both. It has not been confounded with 

 C. multiflora, and the absence of the setaceous bracts, as well as 

 other characters, separates it from C setacea. It is far different 

 from C. vulpina. L. 



No. 240. C. platyphylla, Carey. 



Spica staminifera unica subclavata brevi-pedunculafa cum sqna- 

 misoblongisaciuis,pistiIliferisternisgracilibuspaucitloris(3-6)ex- 



•flte pedunculatis folioso-bracteatis laxifloris erectis ; fructibus tris- 

 tigmaticis ovatis utrinque acutis triquetris ore integris apice subre- 

 curvis, squamam ovatam acutam vel aristatam multo superantibus; 

 culmis demum subprostratis, et foliis radicalibus patulis nervosis. 



Second Series, Vol. VIII, No. 24.— Nov., 1849. 45 



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