210 PROCEEDINGS OF THE AMERICAN ACADEMY 



Interiol' district between Utah and California ; on the Mohave River, 

 April 23, Fremont. Diluvial banks of the Colorado near its mouth, 

 March 12, A. Schott. Boca Grande, Capt. E. K. Smith. — Specimens 

 of this have accumulated enough to show that they belong to a quite 

 distinct species, although only the forming fruit has come to hand. 

 It was unnoticed in the Botany of the Mexican Boundary Survey. 



* * * Brevicaules vel subcaulescentes, saspiusque depresso-humifusi 

 vel ciEspitantes e radice longa perenni ; floribus majusculis breviter 

 pedicellatis plerumque violaceis ; foliolis oblongis ellipticis obova- 

 tisve. Legumen crasso-coriaceum, maturum obcompressum vel ob- 

 compresso-trigonum transverse rugulosum. {Argophylli genuini.) 



The immature legumes in dried specimens frequently appear as if 

 compressed (i. e. flattened parallel with the valves) ; but when fully 

 mature I believe they are always obcompressed (i. e. contrary to the 

 valves), or, by the salience of the ventral suture and introflexion of 

 the dorsal one, obcompressed-triangular. 



49. A. MissouRiENSis, Nutt. Gen. 2, p. 99. A. melanocarpus, 

 Fraser, Cat. ; Richards, in Frankl. Journ. ; Hook., etc. Subcaulescens, 

 pube brevi appressissima cano-sericeus ; pedunculis scapiformibus capi- 

 tato-paucifloris vel -spicato-S — 14-floris ; calycis dentibus tubo cylin- 

 drico vel cylindraceo subdimidio brevioribus ; corolla Igete violacea (fide 

 Nutt. raro alba) ; legumine fere recto (circiter pollicari) nigricante ellip- 

 tico. — Nebraska and New Mexico to the Saskatchawan. — The short 

 and appressed pubescence of the calyx and of the legume is usually 

 of blackish and whitish hairs intermixed. The mature legumes, when 

 preserved in their natural form, or restored by maceration, are obcom- 

 pressed, oftener so that the dorsal suture touches the ventral, which, 

 however, is externally salient or carinate. But in herbaria, they fre- 

 quently appear as if laterally compressed, with the dorsal suture only 

 slightly intrusive. 



50. A. SnoRTiANUs, Nutt. in Torr. & Gray, Fl. 1, p. 331, ex 

 desci". A. humih's, Geyer ex Hook, in Lond. Jour. Bot. 6, p. 211, non 

 Bieb. A. cyaneus, Gray, Enum. coll. Parry, Hall, & Harbour, no. 126. 

 Subacaulis, pube appressissima sericeo-canescens ; foliolis majusculis 

 (lin. 7-10 longis) obovatis ovatisve ; pedunculis scapiformibus pauci- 

 plurifloris foliis stepius brevioribus ; calyce cylindrico (semipollicari), 

 dentibus tubo dimidio brevioribus ; corolla violacea vel cyanea ; legu- 

 mine immaturo ovato-lanceolato crasso (sesqui-bii3ollicari) puberulo 



