368 BOTANY. 



PRIMULACE^. 



Primula suffrutescens, Gray. — Fisherman's Peak, at 13,000 feet 

 (419), I. c. 468. 



Dodecatheon Meadia, L., var. alpinum, Watson. Apparently a more 

 luxuriant form, from a lesser altitude than usual. Head of Peru Creek, 

 5,100 feet (368), I. c. 467. 



Samolus Valebandi, L , var. Americanus, Gray. — Santa Barbara (52), 

 I. c. 470. 



Anagallis arvensis, L. — Santa Barbara, I. c. 469. 



ASCLEPIADE^. 



By Dr. George Engelmann. 



Asclepias erosa, Toit. Bot. Mex. Bound. 162. (A. leucophylla, Engelm. 

 Am. Naturalist, 9, 349 ; Gray, Bot. Calif 1, 476 ; Syn. 94.)— Fort Tejon. 



Asclepias Mexicana, Cav. Gray, Proc. Am. Acad. 12,- 71; Syn. 96. 

 (A. fascicularis, Decaisne in DC. Prod. 8, 469; Gray, Bot. Calif. 1, 475) — 

 Lake Elizabeth, Rothrock (190), 1875. Very closely allied to A. verticillata; 

 the flowers, though a little larger than in the common forms of that species, 

 are scarcely to be distinguished from it. I find, however, the top of the 

 rounded hoods more reflexed, and the horn comes from near the base of the 

 hood, while in verticillata it is attached to the whole lower third or half. 

 But A. Mexicana is altogether a stouter plant, with spreading, or at last 

 recurved, usually conduplicate leaves, bearing the umbels in a terminal 

 corymb. 



GENTIANEJE. 



By Dr. George Engelmann. 



Gentiana serrata, Gunn. Fl. Norveg. 10, var. holopetala, Gray, Fl. 

 Calif. 1, 481 ; Syn 117. — Simple, or with many simple, ascending branches 

 from the base, and long, naked peduncles ; lobes of the corolla entire or 

 with few notches. — Southern Sierras, Kern County, at 10,000 feet altitude. 

 Easily distinguished from O. simplex, Gray, by the oval, rough ovules and 

 seeds, while those of the latter species are lanceolate, smooth, and tailed at 

 both ends. 



