LEGUMIN0SJ1. 267 



2. Lathyrus ochroleucus, Hook. 



Hab. On the Spokane Kiver, Washington Territory. — We are not 

 confident that this is L. ochroleucus, but are unable to refer it to any 

 other species. The color of the flowers cannot be determined from 

 the dried specimens. No allusion is made to their being ochroleucous 

 in the notes of Dr. Pickering. 



3. Lathyrus palustris, Linn. 



Hab. Throughout Washington Territory, Oregon, and valley of the 

 Sacramento, California. — Extremely variable in the number and 

 form of the leaflets, shape of the stipules, and relative length of the 

 calyx-segments and tube. We have scarcely a doubt as to L. myrti- 

 folius being only an extreme form of this species, to which it has 

 already been referred by Dr. Gray. It was stated long ago, in the 

 Flora of North America, that some of its varieties could not be 

 certainly distinguished from L. palustris. 



4. Lathyrus Torreyi, Gray. 



Lathyrus Torreyi, Gray, in Proceed. Amer. Acad. 7, p. 337, 1867. 



L. f villosus, Torr. in Suckley's Report, Pacif. R. R. Expl. 12, part 2, p. 54, sine 



char. 

 Orobus villosus, Torr. in MSS. 



Hab. Banks of the Kooskooskee River, Washington Territory. — 

 Villous, erect or assurgent ; leaflets 5-7 pairs, and with petiole ending 

 in a short seta or minute leaflet ; stipules oblong-lanceolate and semi- 

 sagittate, entire; peduncle axillary, one-flowered, shorter than the 

 leaf. Root perennial. Stem 8-12 inches high, slender, somewhat 

 branching. Leaflets 5-8-lines long, rather acute, membranaceous, the 

 petiole terminating in a short bristle, or in a small leaflet resembling 

 the others in form. Stipules scarcely one-third the size of the leaflets, 

 acute. Peduncles filiform, erect, one-third to one-half the length of 

 the leaves, minutely bracteolate a little below the flower. Flowers 



