234 PROCEEDINGS OF THE AMERICAN ACADEMY 



characterized. Dr. Parry gathered the same species on the Gila, still 

 without fruit. 



3. A canescent, narrow-leaved species from " Tubac, Sonora, Parry," 

 which in the Bot. Mex. Bound. Surv., p. 56, was referred to A. Sonorce. 

 Capt. E. K. Smith collected the same species at Los Nogales, Sonora, 

 also without fruit. 



4. A plant mentioned in Torr. & Gray, Fl. 1, p. 694, under Phaca 

 leueophylla, from Douglas's last collection, of which the legumes only 

 are known ; these are ovate-oblong, rather cartilagineous than coria- 

 ceous, entirely one-celled. 



• OXYTROPIS, DC. 



The few North American species of Oxytropis of which materials 

 are before me appear to be as follows : — 



A. Calyx fruciifer vesicarius. * 



§ 1. Calycophysce. {Physocalyx, Nutt. ined.) Calyx fructifer vesi- 

 cario-inflatus, globosus, legumen ovatum chartaceo-membrana- 

 ceum sutura ventrali solum intrusa sub-semibilocellatum includens. 

 Pulvinato-caespitosae, subacaules : scapi biflori. 



1. O. MULTiCEPS, Nutt. in Torr. & Gray, Fl. 1, p. 341 ; Gray in 

 Enum. coll. Parry, Hall, & Harbour, no. 144 (forma minor). Phy- 

 socalyx multiceps, Nutt. in herb. Rocky Mountains. — The legume of 

 this most rare and charming little alpine species resembles that of 

 0. pumila, Fischer, but is short-stipitate, and concealed in the persist- 

 ent bladdery calyx. 



B. Calyx immutatus. 

 § 2. Physocarpce. Legumen vesicario-inflatum, membranaceum, sutura 

 ventrali solum intus tumida vel intrusa. Acaulescentes : scapi 

 umbellato- seu capitato-2 - 6-flori. 



2. 0. PODOCARPA. 0. arctica, Hook. Fl. Bor.-Am. 1, p. 146, pro 

 parte, non R. Br. Astragalus bijlorus, Schweinitz in herb. Depresso- 

 caespitosa, multiceps, albo-villosa, demum glabrescens ; stipulis petiolo 

 longe adnatis ; foliolis 5 — 11-jugis crebris lineari-lanceolatis seu oblongo- 

 linearibus (lin. 2-4 longis) ; peduncuhs folia ad«quantibus bifloris ; 

 corollas (subczeruleas ?) carina brevi-mucronata ; legumine (subpolli- 

 cari) oblongo-ovato tenui-membi'anaceo subglabro acutissime acuminato 

 stipite gracili calycem adajquante sustento. — Labrador, Arctic regions, 

 and Rocky Mountains, lat. 49°. The specimens before me are from 



