Professor Dewey’s Caricography. 271 
3. C. stipata. Muh. 
Pursh, Muh. Eaton, and Pers. 
Schk. tab. Hbh. fig. 132. 
C. vulpinoidea, Mx. 
This very distinct species is well described, but Pursh has 
quoted C, vulpinoidea Mx.as a synonyme of C. muhlenbergii, 
Schk. There can be litile doubt, however, from Mx’. de- 
scription and his popular remark that it is closely allied to C. 
vulpina as well as the remark of Muh. to the same pur- 
pose, that C. vulpinoidea, is the same as C. stipata, C. muh- 
lenbergii has very little resemblance to C. vulpina, and is 
readily distinguished by its approximate spikelets, its com- 
Pressed roundish ovate fruit, ciliate serrate at the apex, and 
us ovate scale long as the fruit and terminating in a mu- 
‘ronate point, extending beyond the fruit. A 
4. C. retroflera. Muh. — 
Pursh, Muh. Eaton, and Pers. 
Schk. tab. Kkk. fig. 140. ae. 
This species and C. rosea, Schk. tab. Zzz, fig. 179, are 
Yery liable to be confounded, because one other particular 
has not been introduced into the specific descriptions. 
Mah. indeed says it may perhaps be a smaller variety of C. 
rosea. Though they resemble each other, Schk. and authors 
generally, consider them as distinct species. The great 
difference between them is the following. In C. re : 
the scale of the fruit is ovate acute, ovate-lanceolate, or ob- 
long-lanceolate, and very nearly as long as the fruit; the 
spikelets are nearer together, the t ovate-lanceolate. 
In C, rosea, the scale of the fruit is ovate obtuse, and a ; 
half the length of the f thin the fruit is less distinctly —_ 
lemberg describes a variety, C. radiata, found in this coun- 
try. His description co’ s exactly to ; 
bristly flaccid culm—the narrow leaves — the smal 
