among Onagraceous plants to the indefinite stamens of 
Myrtacee. The whole genus, indeed, shews this to a cer- 
tain extent, but in no case so distinctly as in that before 
us. In the genus Eucharidium there are but four stamens ; 
in Godetia there are eight; in Clarkia pulchella there are 
12, of which the first whorl is perfect, the second rudimen- 
tary, the third in the form of narrow glandular scales at the 
base of the perfect stamens ; in Clarkia elegans there are 16, 
the first whorl of which is perfect, the second striate but not 
rudimentary, the third in the form of small round hairy 
scales at the base of the imperfect stamens, and the fourth in 
the state of smaller scales at the base of the perfect stamens; 
and in Clarkia rhomboidea the two whorls of scales are 
equally perfect, while the stamens are in the same state as 1n 
C. elegans. 
This is indicated in the plate, where fig. 1. is a section 
of the tube of the calyx of C. elegans, fig. 2. of C. rhom- 
boidea, fig. 3. of C. pulchella. 
Nearly allied to C. rhomboidea is an unpublished species 
in Douglas's Californian herbarium, the character and name 
of which may be briefly stated thus— 
C. unguiculata ; folis oblongis sessilibus dentatis, ovariis calycibusque villosis, 
petalis unguiculatis limbo subsagittato rotundato ungue duplò breviore. 
