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VI. 



PLANT^ WRIGHTIAN^. 



43 



A. NuTTALLiANUs, DC. ; var. pube strigulosa subcanescens ; leguminibus arcuatis 

 nunc striguloso-hispidulis (ut in var. trichocarpo) nunc cum ovario glabris. — Stony 

 hills near El Paso; March, April. (1359.) — Plant about as large as Texan and 

 Arkansan specimens, but much more strio^ose-cinereous. 



A. NuTTALLiANus, var. pumilus, etc. (Gra?/, P/. Wright p. 52); 2 - 3-pollicari 



prsecedente ; leguminibus 



Rio 



Blanco, Piedra Pinta, and Pecos. Also at El Paso, and on Lake Gusman, Chihua 

 hua ; April, May. (1001.) Some specimens with shorter pods pass into the next. 



NuTTALLiANUs ? var. pumilus, strigoso-canescens ; cauHbus difFusis ; legumini 



bus brevioribus. — Near Lake Santa Maria, Chihuahua; April. (1360.) * 



A. VACCARUM (sp. nov.) : perennis, strigoso-puberulus ; caulibus adscendentibui 

 acilibus ; stipulis lanceolatis basi imo petiolo adnatis ; foHoHs 5 - 8-jugis sub 



obtusis 



peduncuHs fol 



o 



bus ; racemis multifloris densis ; floribus brevissime pedicellatis mox deflexis ; 

 calycis dentibus subulatis tubo campanulato subeequilongis ; corolla incurva ochro- 

 leuca ; leguminibus haud stipitatis Hneari-oblongis arcuatis puberuHs dorso lato- 



(sectione transversali obcordata) bilocularib 



de\ 



west of the copper mines, New Mexico ; Aug. (1002.) — Stems 1 or 2 feet high, 

 branched from the base, weak. Leaflets 6-8 lines long, a line and a half or less 

 in width, the pairs rather distant. Peduncles 3 -5, the spicate raceme one to two, 



th. Bracts subulate, persistent, as long as the calyx. Flowers only 

 2 Hnes long, smaller than those of A. gracilis, Nutt, and the corolla more incurved. 



o 



Leg 



ime 4 lines long, a line in diameter ; the cells 3 - 5-seeded. — This species re- 

 sembles A. Hartwegi, BentL, more than any other known to me ; but the incurved 

 flowers are only half as large, the stipules and leaflets are narrower, the latter 

 fewer, the racemes much shorter, &c. 



A. HUMisTRATUS (sp. nov,) i subscriceus ; caulibus e basi suff^rutescente ramosis- 



folio 



tifoliis ; petiolo b 



foliolis T-9-jugis lineari-oblongis acutis supra glabratis subtus pilis laxe appre; 

 hirsuto-scriceis ; pedunculis folium sequantibus ; racemo cylindraceo subdensiflo 



Thc following species was found near the coppcr mlnes by Dr. Bigelow, early in the season. It is 

 alllcd to Astragalus lcptopus, Bcnth. ined.^ in Coulter's Mcxican collection ; but has fewer and retuse 

 leaflcts, smaller flowers, and smaller pods, which are obtuse at each end and not stlpitate. 



AsTRAGALUs CoBRENSis (sp. nov. ) : striguloso-pubcrulus ; caulc humili gracili ; stipulis triangulatis a 

 petiolo modice elongato libcris ; folioUs 7 - 10-jugis obovatis oblongisve retusis supra glabris ; pedunculo 

 folium superante plurifloro ; calyce pedicello paullo longiore, dentibus subulatis tubo sequiloiigis ; legumi- 

 nibus haud stipitatis oblongis utrinque obtusis obcompressis glabellis dorso late concavis bilocularibus 

 polyspermls, sutura ventrall extus prominente. — Near the Cohre or copper raines (Santa Rita del Cobre), 

 Ncw Mexico ; April or May. — Stcms slender, a span high ; the root wanting in the specimen. Petioles 

 half an inch or more in length to the lowcst pinna;. Leaflets 3 lines long, rather fleshy, strigulosc-pubes- 

 cent when young, the upper surface early glabrate and the lower at length nearly so, Racemes loose, 

 10- 15-flowered • tbe flowers spreading, barely 3 lines long. Bracts shorter than the pedicels. Calyx 

 pubescetit with dark hairs. Corolla purple. Legumes pendulous, ha1f an inch long, 2to2| lines wide 

 (contrary to the partition) ; the ventral suture salient ; the dorsa! face broadly concave ; the partltion ex- 

 tending quite to the vcntral suture, but not coherent with it. 



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