274 Professor Dewey^s Caricography. 



ted to C. lenticularis Mx., and is probably the same plant. 



7. C. trichocarpa. Mull. 

 Pursh. Miih. Eaton, Pars. 

 Schk. tab. Nnn. fig. 148. 

 C. lanuginosa, Mx. ? 



This plant is very well described by Muh. But as the 

 works of Pursh and Eaton are most accessible by the stu- 

 dent, and as it is placed by them in a subdivision to which 

 it will not often be found to belong, this species is very 

 liable to be mistaken. The subdivision in Ph., terminal 

 spikes staminate, the rest androgynous, is contradicted by 

 the description of every species under it. It should be, 

 termiiial spike staminate below, the others pistillate^ and the 

 subdivision would then include all the species except C. 

 trichocarpa. This species should be removed to the last 

 subdivision in Ph. and Eaton, staminate spikes several; and 

 the specific description of C. trichocarpa should be amend- 

 ed by 'he character, staminate spikes sometimes pistillate at 

 the apex. Pursh indeed took his description from Schk., 

 and in the figs, of Schk. the plant corresponds to the de- 

 scription. It was probably taken from the specimens most 

 early found and forwarded to Schk. by Muh. — for Schk. 

 acknowledges the reception of many of our species from 

 Muh. But in his own description Muh. says that the stam- 

 inate spikes Bit e from two to four, often pistillate at the apex. 

 In the specimens I have received from Pennsylvania, how-» 

 ever, they are not androgynous, and I have rarely found 

 any specimens of this species that had androgynous spikes. 

 The language of Muh. indeed implies that the staminate 

 spikes are more commonly destitute of any fruit, and au- 

 thorizes the removal of this species to the proposed subdi- 

 vision. It seems very doubtful whether this plant is the 

 C lanvginosa, Mx., as he says the "pistillate spikes are 

 closely sessile,'''' while those of C. trichocarpa are pedun- 

 cled ; and the ^fruii most dense and shirt " while that of 

 the latter is not very close-set and is ovate-lanceolate, or 

 ovate-conic, beaked, and two toothed. 



8. C. xanthophysa. Wahl. 



Rees Cyc. 



"Spiels subincluse pedunculatis sexfloris crassissimis, 

 bracteis vaginantibus foliatis remotissimis, capsulis ob- 

 longo-conicis inflatis rostratis divergentibus ore bifido." 



