102 EEYTHEA. 





regularly dentate and almost plane, the throat of the calyx 

 occupies about two-thirds of the entire length and the corolla 

 is comparatively short-exserted. But the most striking and 

 characteristic difference between the two species lies in the 

 cut of the corolla. As regards general outline, the corolla of 

 Diplacus longijiorus is more clearly bi-labiate, though the 

 slender side-lobes of the lower lip are widely divergent and 

 slightly curved outwards: these lower lobes are narrowly 

 rectangular erose and emarginate, and scarcely increase in 

 width before uniting at the base: the upper lobes are broad, 

 widely divergent, deeply aud very obliquely erose-emarginate, 

 their sinus deep and usually broad: corolla larger, measuring 

 1| in. in length and If in. in breadth. Specimens in cultiva- 

 tion at Berkeley are in color but little paler than D. gluUn- 

 osus, D.speciosus is the only scented species of the five 

 that are in cultivation with us. 



The plants from which the description of D. speciosus is 

 drawn, came from Humboldt Co. in northern California, and 

 have flowered in the Botanic Garden of the University of 

 California, for two seasons. Professor Greene pointed them 

 out to me as being new, and willingly gave me permission to 

 describe and name the species. 



NOTES ON WEST AMERICAN CONIFER^E.-IV. 



By J, G. Lemmon. 



Old and New Species. 



When 



ern America in 1825, the scientific world began to receive its 

 .first accurate knowledge of the vast coniferous forests of this 

 region, and of the great number of peculiar species of trees 

 composing them. 



During the following seven years, Douglas discovered over 

 twenty species; the remaining forty-six species, being either 

 too far inland or too local and secluded, escaped this sharp- 

 eyed collector. Dr. Coulter in 1831, Nuttall in 1834, and 



