2 PROCERDINGS OP THE AMERICAN ACADEMY 



§ 2. Acaulescens vel subcaulescens ; caudicibus multicipitibus conferte 

 foliosis, stipulis petiolo aduatis : folia simpliciter piniiata. 



* Legumen calyce fructifero ovato-globoso vesicario prorsus iiiclusum, 

 ovatum, uuiloculare : pedunculi debiles 1-2-flori, — § Physocahjx, 

 Nutt. § Calycophysce, Gray, Proc. Am. Acad. vi. 234. Subgeu. 

 Physoxytropis, Bunge, Oxytr. 161. 



2. O. MULTiCEPS, Nutt. in Torr. & Gray, Fl. i. 341. — Rocky 

 Mountains of Wyoming, Nuttall, in fruit only. 



Var. MINOR. Pulvinato-cicspitosa, depressa; foliolis minoribus lin. 

 1-3 longis. — 0. miiUiceps, Gray, Proc. Acad. Philad., 1863, 61 ; 

 Proc. Am. Acad. vi. 234. — Alpine region of the Rocky INIountains, 

 S. Wyoming and Colorado, Parry, Hall S)- Harbour, Vasey, Coulter, &c. 

 Leaflets about half the size of those of Nuttall's original, and fruiting 

 calyx rather smaller. No quite intermediate specimens have yet been 

 found. 



* * Legumen calyce fructifero repleto vel hinc fisso parum longius, tur- 

 gidum, pubescens, sutura ventrali introflexa semi-bilocellatum : scapi 

 folia superantes, capitato-pluri- vel pauci-flori : plantai albo-sericeaj, 

 spithama?a3 : flores ultra semipollicares, bracteis majusculis. 



3. O. NANA, Nutt, 1. c. Pube adpressa argenteo-sericea ; foliolis 

 3-4-rarius 6-jugis angusto-lanceolatis ; corolla purpurea vel pallida ; 

 legumine turgido-oblongo subcoriaceo, apice acuminato e calyce fruc- 

 tifero tenuiter villoso distento sed integro parum exserto. — Rocky 

 Mountains of Wyoming, on stony hills along the branches of the 

 Platte, Nuttall, Geyer, the latter under the name of 0. multiceps 

 in Hook. Lond. Jour. Bot. N. W. Wyoming, Parry, no. 01 & 9f>, 

 along with a larger form, with the inflorescence in fruit sometimes 

 oblong ; the same collected by Dr. Foricood. S. Montana, S. Watson, 

 who notes that the flowers are "deep pink." This may be 0. argen- 

 tata of Pursh. Fl. 473. 



4. O. Lagopus, Nutt., Jour. Acad. Philad. vii. 17. Pilis laxiori- 

 bus albo-sericea ; foliolis 4-5-jugis lanceolatis vel oblongis ; corolla 

 Icete violacea ; legumine ovato subvesicario fere membranacco obtuse 

 stylo subito rostrato calycem villosissimum mox fissum parum super- 

 ante. — Rocky Mountains of Wyoming and Montana, Wyet/i, Howard, 

 Parry (no. 92), Greene, Scrihnnr. 



* * ♦ Legumen basi tantum calyce aut integro aut hinc fisso suf- 



fultum. 

 ■*- Vesicario-inflatuni membranaceum, ovatum, uniloculare : scapi vel 

 pedunculi debiles, paueiflori, fructiferi mox decumbeutes : herbaj 



