42 



PLANT.E WRIGHTIAN.?E. 



VI 



HosACKiA Plrshiana, BentJi. ; Torr. ^ Gray, Fl. 1. p. 327. Valley of Sonoita 



Creek, Sonora ; Sept. (998.) 



H. PUBERULA, BentJi. Pl. Hartw. p. 305 ; Gray, Pl. Wright. p. 50. Hills near 

 the San Pedro, Sonora ; Sept. Also on Rock Creek, towards the head of the 



Limpio; June. (999.) ' 



H. puBERULA ; var. nana, difFusa, magis cinerea ; foliolis brevioribus et latioribus. 



Organ Mountains, northeast of El Paso, April ; in flower and fruit. 



(1357.) 



H. Wrtghth (sp. nov.) : sericeo-pubescens ; cauUbus e radice perenni erectis 



; stipulis nigris glandulaeformibus ; petiolo vix ullo ; foliolis 



rigidis 



ramosissimis 



f. : £- 



> 



■■J 



3-5 linearibus imisve oblongis ; pedunculis unifloris folio brevioribus, superioribus 

 ^tM^^ brevissimis ; bractea unifoliolata lineari ; calycis dentibus setaceo-subulatis tubo 



oblongo-campanulato sequilongis corolla (fiava purpureo tincta) multo brevioribus* 

 Stony hills at the copper mines, New Mexico, Aug. (1000.) — Plant about a 

 foot high, herbaceous ; the young branches and foliage silvery-pubescent, when old 

 glabrate. Petioles of the lower leaves barely half a line long ; the upper almost 

 none. Leaflets 5 to 7 lines long, half a line wide, or towards the base of the stem 

 a line and ahalf wide. Lower peduncles 6 to 8 lines long, the upper one to three lines 



n 



long, rarely 2-flowered. Calyx minutely silky-pubescent, the tube 2 to 



2i 



lines 



long. 



Corolla 6 lines 



long, 



not 



counting 



the included claws. 



Legume 



over an 



Allied 



inch long, straight, acute, clothed with the same pubescence as the calyx. 

 to the preceding species ; from which it is distinguished by its more upright and 

 bushy growth, its nearly sessile leaflets, short peduncles, and larger flowers. From 

 H. rigida, Benth.^ its narrow leaflets, shorter calyx-tube with longer teeth, and short 

 peduncles seem abundantly to distinguish it. 



AsTRAGALUS MOLLissiMus, Torr. ; Gray, Pl. Wright. p. 5S. Prairies of Escondido 

 Creek, between the Pecos and the Limpio ; June, in fruit. 



A. BiGELovii (sp. nov.) : multiceps, acaulescens, undique sericeo-villosissimus ; 

 stipulis triangulari-subulatis basi petioli adnatis ; foliolis 9 - 12-jugis ovaHbus seu 

 obovato-oblongis ; pedunculis scapiformibus folia superantibus, fructiferis recurvis 

 vel humifusis ; spica cylindrica confertiflora ; tubo calycis villosissimi cylindrico 

 dentibus subulatis triplo longiore ; corolla purpurea ; leguminibus ovatis apiculato- 

 acuminatis incurvis lanosissimis complete bilocularibus suturis parum sulcatis, 

 locuHs polyspermis. — On the Organ Mountains northeast of El l^aso; April 

 30th; chiefly in fruit. (1358.) — Plant a span or more in height from a peren- 

 nial lignescent root ; the leaves, scapes, &c. thickly clothed with a canescent wool, 



Spike 3 or 4 



Leaflets 5 to 8 lines in length. 



long. 



which is rather viUous than silky. 



inches long, many-flowered, compact. Elowers nearly sessile, 7-8 Hnes 

 Legumes half an inch long, very densely woolly, as weU as the scariously marces- 

 cent calyx, coriaceous, the cross-section orbicular. — Manifestly alHed to A. moUis- 

 simus, and with the same habit ; but more strictly acaulescent, more ' villous, and 

 especially distinguished by its turgid and very wooHy (instead of glabrous) pods, 

 the sutures not introflexed. I dedicate it to Dr. J. M. Bigelow, the physician of the 

 Boundary Commission, to whom, with Mr. Wright, we are indcbted for the discovery 



of this striking 



species, 



} 



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i 



