OF ARTS AND SCIENCES: NOVEMBER 11,1863. 201 



and Idaho to the Rocky Mountains. — Legume not divided internally 

 into two cells, but the cross section somewhat equally triradiate or 

 Y-shaped. 



27. A. CYRTOIDES, sp. nov. MoUiter pubescens ; stipulis parvis ; 

 foliolis 7 - 10-jugis lineari-oblongis supra glabris ; pedunculis folia longe 

 superantibus ; racemo spiciformi ; floribus in pedicello brevi suberecto 

 resupinato-pendulis ; calycis tomentulosi dentibus subulatis tubo oblongo 

 3 - 4-plo brevioribus ; corolla ut videtur ochroleuca calyce vix duplo 

 longioi'e ; ovario stipitato lineari cinereo-pubescente. — Clear Water 

 River, interior of Oregon (now in Washington Territory), in rich land 

 on hillsides, April 14, Rev. Mr. Spalding. — This we have long had in 

 the herbarium ; but the legume is still unknown. Its near relationship 

 to A. racemosus is manifest. Its calyx is still more gibbous at the 

 insertion and bossed on the upper side, like that of a Cuphea. Corolla 

 from half to two thirds of an inch long, less exserted from the calyx 

 than in allied species. 



§ 12. Ocreati. Legumen estipitatum, coriaceum, obcompressum vel 

 obcompresso-trigonum, sutura dorsali impressa ventrali approxiraa- 

 ta pi. m. interstinctum, baud bilocellatum. Humiles vel humifusi 

 e radice perenni, pilis incumbentibus canescentes vel strigosi. 

 StipuliB a petiolo libera, inter se adversus folium alte connatte. 

 Flores spicati, vix mediocres ; calycis tubo saepius campanu- 

 lato. 



* Flores saturate flavi. StipuL'e in ocream obliquam petioli basin cau- 



lemque vaginantem coalita). 



28. A. FLAVUS, Xutt. in Torr. & Gray, Fl. 1, p. 335. Multicaulis, 

 diffusus, pube tenui canescens ; foliolis linearibus subacutis ; legumine 

 parvo (4 liu. longo) calyce semi-incluso canescente ovato recto utrin- 

 secus impresso, loculo suturis approximatis longitudinaliter strangu- 

 lato. — Rocky Mountains, about lat. 41° ; found only by Nuttall. 



* * Flores purpurei, patentes. Stipulas vix vaginantes. 



29. A. humistraths. Gray, PI. Wright. 2, p. 43. Strigoso-pilosus, 

 subglabratus ; caulibus plurimis e radice perenni procumbentibus elon- 

 gandis ; foliolis lanceolatis seu lineari-oblongis acutis ; calycis dentibus 

 tubo longioribus ; vexillo albo-purpureo et lineato ; carina apice angus- 

 tato producto inflexa ; legumine oblongo-lineari arcuato pubescente 

 obcompresso-trigono, sutura dorsali intrusa ventralem extus prominen- 

 tem carinatam baud attingente. — New Mexico and Arizona. 



