92 Caricography. 



No. 176. C. Nuttallii, D. Tab. Cc. fig. 97. 



Spica composita ; spiculis 5-8 ovatis sessilibus bracteatis distig- 

 maticis superne stamitiiferis in capitulum denso-aggregatis ; frac- 

 libiis ovatis brevi-lanceolatis concavo-convexis ore integris, squa- 

 ma ovata lanceolata duplo longioribus. 



Culm three to six inches high, erect, smooth, obtusely triangu- 

 lar; leaves flat, lanceolate, longer than the culm, with lower leaves 

 shorter, and all sheathing ; spike short, dense, five to eight spike- 

 lets closely aggregated, bracteate, and the lower with a leafy bract 

 longer than the culm; fruit ovate, short-lanceolate, smooth; stig- 

 mas two; pistillate scale broad ovate, lanceolate, and tv/ice as long 

 as the fruit, membranaceous on the margin ; color light green. 



Collected by Mr. Nuttall on the Rocky Mountains, and named 

 in honor of that distinguished and indefatigable botanist. 



Note. C. cephalophora, Muh. Vol. X, p. 268. Var. maxima, D. 



Spica composita ; spicis 8-10 ovatis subaggregatis bracteatis 

 flavescentibus ; culmo triquetro striate 2-pedali basin foliato ; 

 squama ovata cuspidata. 



Culm large, erect, acutely triquetrous, leafy towards the base ; 

 spikelets forming a loose spike an inch long, with diverging fruit ; 

 two stigmas; fruit ovate, lanceolate, winged, scabrous, two-tooth- 

 ed, and its scale about half as long as the fruit, with a cuspidate 

 point extending to the end of the fruit ; light green ; woods. 



The figure in Schk. has only a remote resemblance to this va- 

 riety, which is so like some varieties of C. stipata in general ap- 

 pearance. The spike of this variety is four times as large as that 

 drawn by Schk., who had it from eight to eighteen inches high. 

 This variety grows in woods from two to four feet in height. I 

 have specimens from four to twenty eight inches high. In the 

 herbarium of Muhlenberg one specimen of the large C. cepha- 

 loidea is placed with this species. The smaller variety, corres- 

 ponding to the figure of Schk., J have described in this Journal. 

 This variety, so large and fine, was found by Dr. Sartwell, at 

 Penn Yan, N. Y., and had been confounded, except by him, with 

 C. stipata, which, however, always grows on wet grounds. 

 Figures of the following species accompany this paper : 



C. Meadii, D. Tab. Cc. fig. 94. -^ 



C. Sartwellii p. %■ 95. ! g^^ p^^^^ ^^ 



C. macrocephala, WiUd. ng. 96. [ 



C. Nuttallii, D. fig. 97. j 



