194 PROCEEDINGS OF THE AMERICAN ACADEMY 



5. A. LENTiGiNOSUS, Dougl. in Hook. Fl. Bor. Am. Hirsutulus ; 

 foliolis 8-9-jugis obovatis ; calycis tubo campanulato dentibus vix 

 longiori ; legumine puberulo demum glabro arcuatim incurvo. — Inte- 

 rior of Oregon and Washington Territory. — Flowers known only from 

 specimens collected in Wilkes's Exploring Expedition near Fort Okan- 

 agan. They are much smaller tlian those of the preceding species, 

 only 4 lines long ; the corolla apparently white or purplish. Legumes 

 very much like those of A. diphysus, but more incurved, and less sul- 

 cate down the outer or dorsal side. It is only in Douglas's specimens 

 that they have been found mottled or freckled. 



* * Elatior, cinereus ; spicis laxitloris. Legumen globoso-didymum. 



6. A. Fremontii, Torr. & Gray, Bot. Whippl. Exped. (Pacif. 

 R. R. Surv. 4), p. 24 (80), excl. var. ! Pilis appressis cinereus ; caule 

 ultrapedali parcius folioso ; foliolis 5 — 6-jugis ovalibus obovatisve 

 retusis ; floribus in spica laxiuscula subsessilibus " purpureis " (lin. 

 4 longis) patentibus ; calycis dentibus tubo longiuscule campanulato 

 brevioribus ; legumine glabro globoso apice brevissimo subincurvo 

 postice paullo antice profunde sulcato didymo. — Banks of the Rio 

 Virgen, in the desert of Nevada, between California and New Mexico, 

 Fremont, who alone has met with it. For the specimens referred to 

 this in Dr. Bigelow's collection are probably different. Legume half 

 an inch in diameter, the apex inconspicuous at maturity, although in 

 the forming fruit there is a broad and more manifest acumination. 

 The two sutures meet and unite in the very middle of the cell. 



§ 3. Chcetodontes. Legumen ovatum, parvum, flore haud longius, 

 estipitatum, coria^eura, turgidum, nunc compressiusculum, postice 

 pi. ra. sulcatum, septo completo bilocellatum, locellis 3 - 4-ovulatis. 

 — E radice perenni multicaules, foliosi, undique villo sei'iceo albi- 

 cantes ; foliolis angustis sfepius acutis. Flores spicati, parvuli, ut 

 videtur flaviduli, patentes ; tubo calycis brevi, dentibus setaceis 

 elongatis corolla parum brevioribus. Stipulaj libera^, subdiscretae, 

 subulatfe. 



7. A. CHiETODON, Turr. in Bot. Wilkes Expl. Exped. ined, Pe- 

 dalis ; pube villosa ; foliolis 10 — 12-jugis lanceolatis seu oblongo-line- 

 aribus (3-6 lin. longis) ; pedunculis folia superantibus ; spica oblonga 

 densa nunc basi interrupta laxiuscula ; calyce villosissimo, dentibus 

 tubo longioribus ; legumine villoso postice vix sulcato. — Plains on the 

 Kooskooskie River, interior of Washington Territory, Rev. Mr. 



