324 PHANEROGAMOUS PLANTS. 



19. OSMORHIZA, Raf. 

 1. Osmorhiza nuda, Torr. 



Osmorhiza nuda, Torr. Bot. Whippl. in Pacif. R. Road Expl. 4, p. 93. 



0. brevistylis, Hook., Fl. Bor. Am. 1, p. 271, ex parte; Torr. & Gray, Fl. 1, 



p. 638, ex parte. 

 0. divaricata, Nutt. MSS. 



Hab. Puget Sound and Oregon. — I was not aware when the descrip- 

 tion of 0. nuda was published that it was identical with the plant of 

 Oregon, which all our botanists, as well as Hooker, had regarded as 

 0. brevistylis, or I should have adopted Nuttall's manuscript name. 

 But it is too late now to change it. The involucres and involucels 

 are wanting, or else caducous, before the flowers are quite expanded, 

 while they are always present in 0. brevistylis until the fruit begins to 

 ripen. 



2. Osmorhiza Occident alis. 



Glycosma occidentalis, Nutt. in Torr. & Gray, Fl. 1, p. 639. 



Hab. Between Puget Sound and the Cascade Mountains ; in woods, 

 and on high and shady banks. Flowers in May. — There is little to 

 distinguish Glycosma from Osmorhiza except the smooth fruit, which 

 is not a character of generic importance. [A different view is taken in 

 Benth. & Hook., Gen. PL, where the Glycosma is referred to Myrrhis; 

 but in Proc. Am. Acad. 8, p. 386, the genus is restored and char- 

 acterized.] 



