120 BOTANY. 



LYTHRAPJE^. 



Cuphea Weightii, Gray (PL Wright. 2, p. 56).— Annual, 6-12' high, 

 unbranched; stem, pedicels, and capsules viscidly pubescent or hispid; 

 leaves lanceolate to oblong, 6-10" long, petioled, gradually reduced to 

 bracts, glabrous or nearly so ; flowers either solitary or two or three in the 

 axils ; calyx with an inconspicuous spur, 3" long, naked in the throat; pedi- 

 cels 3" long ; purple petals hardly 2" long ; stamens included ; anthers, 

 style, and seed smooth. — Sanoita Valley, Arizona (630). 



Lythrum alatum, Pursh, var. lanceolatum, T. & G — "Leaves lan- 

 ceolate or elliptical, mostly opposite or whorled, acute at the base, often a 

 little petioled, the upper ones much crowded, often shorter than the flowers" 

 (T. & G Fl. N. Am. p. 481).— Nevada. 



Var. lineaeifolium, Gray. (L. Californicum, T. & G.) — I have a set of 



specimens (309) from Ash Creek, Arizona, differing, so far as I can see, 



from this form in nothing except that the accessory calyx-teeth are not 



quite obsolete. 



ONAGRARIE^E. 



Epilobium angustifolium, L. — Colorado (143); Mount Graham, 

 Arizona, at 9,000 feet altitude (438). 



Epilobium latifolium, L. — Twin Lakes. Altitude, 9,600 feet. "Wet, 

 rocky places. August. We have in the collection the extreme forms of 

 broadly lanceolate and narrow, lanceolate-linear leaves, with all gradations 

 between. (142.) 



Epilobium tetragonum, L — Twin Lakes, Colorado (145, 153, 156); 

 Nevada and Utah. 



Epilobium colokatum, Muhl. — Colorado (154). 



Epilobium palustee, L. var. /?. albifloeum, T. & G. — (156 bis.) 

 These specimens were intermixed with 156 in the retained collection. So 

 plainly marked were their characteristics — i. e., leaves entire, lance-linear, 

 obtuse; stem few-flowered; flowers almost white; capsule hoary, at first almost 

 sessile, afterward with a long pedicel — that I am half inclined to keep the 

 form distinct as a species. Except for its manifesting little or no tendency 

 to branch, it would be exactly E. rosmarinifolium of Pursh, Fl. 1, p. 259. — 

 South Park, Colorado. Altitude, 9,900 feet. 



