OF ARTS AISID SCIENCES : NOVEMBER 11, 1863. 205 



oG. A. OROBOiDES, Hornem. Fl. Dan. t. 1396. A. leo7itinus, WaU. 

 FI. Lapp. t. 12, f. 4. A. alpinus giganteus, Pall. Astrag. t. 33. A. hra- 

 cht/tropis, C. A. Meyer. Phaca brachytropis (Stev.) & oroboides, DC. 

 P. parvijiora, Nutt. in Torr. & Gray, Fl. Glabellus ; caulibus sub- 

 erectis sub -sesquipedalibus ; foliolis 5 - 7-jugis oblongis ovalibusque 

 vix retusis ; racemo elongate secundo ; floribus violaceis aut purpureis 

 (lin. 5 - 6-Iongis), alls earinam superantibus ; legumine elliptico-lenti- 

 formi semipollicari sfepissirae nigro-villoso calyce triplo longiore dorso 

 modice sulcato subsemibilocellato oligospermo, stipite brevissime oc- 

 culto. — Arctic and North Alpine Europe and Asia. 



Var. Americanus. Phaca elegans, Hook. 1. c. Minus viridis, pube 

 tenui subcinereus ; foliolis sjepe lineari-oblongis ; floribus semper mi- 

 noribus (lin. 3-4 longis) ; legumine calycem 3 - 4-plo superante minus 

 nigricante pube appressa Sfepius griseo. — Rocky Mountains, in and 

 considerably below the Alpine region, Drummond, Parry and Hall. 

 Saskatchawan, Bourgeau. Labrador, Eisner, communicated by the 

 late Dr. Steetz. — Legume 5 to G lines long. 



++ ++ Legumen dorso magis impresso trigonum, sectione transversali 

 profunde obcordata, rectiusculum vel incurvum, dorso gibbosum, 

 nempe sutura dorsali longiori convexa, ventrali recta seu concava. 

 Foliola nunc retusa vel subemarginata. 



37. A. ALPINUS, L. ; Pall. Astral, t. 32. A. secundiis, Micbx. ! A. 

 Labradoricus & Phaca astragalma, DC. Piloso-pubescens seu gla- 

 bellus ; caulibus difFusis ; foliolis G-12-jugis ovalibus seu oblongis; 

 racemo brevi vel subcapitato plurifloro ; floribus violaceis seu albo- 

 violaceis (lin. 5-6 longis), alls cai'inam majusculam rare vel paullo 

 superantibus ; legumine oblongo recto vel subcurvato nigro-villoso seu 

 nigro-pubescente trigono-turgido sutura profunde intrusa semi- vel sub- 

 bilocellato, stipite calycem sJEpius excedente. — Arctic and Alpine 

 regions around the Northern hemisphere. Not found on the higher 

 mountains of the Eastern United States, but occurring at moderate 

 elevations in the northern parts of Vermont and Maine, and even on 

 the coast of Maine. 



38. A. SPARSiPLORUS. Gray in Enum. coll. Parry, Hall, & Har- 

 bour, 1. c. no. 128, 129, sine char. Appresse pilosulus, glabratus ; cau- 

 libus gracillirais ramosis difFusis ; stipulis triangulari-subulatis discretis ; 

 foliolis 4 - G-jugis obovatis vel suborbiculatis stepe emarginatis parvis 

 (2-3 lin. longis) ; pedunculis folio vix longioribus 3 - 5-floris ; floribus 

 TOL. VI. 20 



