OP ARTS AND SCIENCES : NOVEMBER 11. 1863. 215 



doubtless a synonyme of some described Chilian species. The following 

 two forms ai-e pretty clearly of one species. 



Var. FOLiOLOSUS. Phaca picta, Gray, PL Fendl. p. 37. Folia 

 perfecta ; foliolis 3 — 7-jugis plerisque semipoUicaribus ; legumine par- 

 vulo vix ultra semipollicari. 



Yar. FiLiFOLius. Psoralea longifolia, Pursh. Fl. 2, p. 741. Orohiis 

 longifolius, Nutt. Gen. 2, p. 95. Phaca longifolia, Torr. & Gray, Fl. 

 1, p. 346. Astragalus jilifolius, Gray, in Pacif. R. R. Surv. 12, pars 2, 

 Bot. t. 1, A. Folia sajpius imperfecta ; foliolis perpaucis plerumque 

 attenuatis (1-1^ poll, longis), terminali seu rhachi filiformi producto 

 persistente ; legumine 1 - 1^-pollicari. 



61. A. HooKERiANus. Phactt Hooheriana, Torr. & Gray, Fl. 1, 

 p. 693. Sericeo-pubescens, humilis (spithama^us) ; radice verosimiliter 

 perenni ; stipulis subscariosis discretis ; foliolis lineari-oblongis sub- 

 cuneatis 7 - 9-jugis ; legumine erecto magno (bipollicari) oblongo- 

 obovato apice rotundato basi in stipitem brevem attenuato. — Interior 

 of Oregon, Douglas ; station unknown. Legume beautifully mottled. 

 Species somewhat like P. arenaria, Pall. 



* * * Radix perennis. Legumen unicolor (baud maculoso-pictum). 



H— Subacaulis, pauciflorus ; legumen brevissime stipitatum. 



62. A. MEGACARPUS. Pliaca megacarpa, Nutt. in Torr. & Gray, 

 Fl. 1, p. 343. Glabellus ; foliolis 4 - 6-jugis late ovalibus ovatisve 

 ssepius emarginatis ; scapo 3 - 6-floro foliis multo brevioribus ; floribus 

 poUicaribus ochroleucis albidisve ; calycis cylindracei dentibus subulatis 

 elongatis carina pauUo brevioribus ; legumine ovato-oblongo acuminato 

 2 — 2^-pollicari basi obtusissimo stipite calyce multoties breviore inserto 

 erecto. — Plains of the Rocky Mountains ; found only by Nuttall. No 

 other North American species resembles it. 



•t— -)— Caulescentes, sat alti, foliosi ; foliolis multijugis oblongis vel sub- 

 linearibus ; racemis spicisve plerumque plurifloris. Prteter A. 

 frigidum Californici. 



++ Legumen nunquam stipitatum, ultrapoUicare, saepius lJ--2-pollicare, 



sutura ventrali recta vel convexiuscula, doi'sali valde gibbosa. 



a. Corolla flavida vel flavescens, parvula, brevis, supra calycem in- 



curva ; carina inflexa. Pedunculi folia baud superantes. 



63. A. DouGLASii. Phaca Douglasii, Torr. & Gray, Fl. 1, p. 346 ; 



Hook. & Arn. Bot. Beech, p. 334. Adsurgens, subglaber vel pube- 



rulo-subcinereus ; stipulis triangularibus discretis; foliolis 10 - 14-jugis 



