'i 



VI. 



PLANT^ WRIGHTIAN^ 



33 



P. ACUTiFOLius ; var. foliolis majoribus ovatis acuminatis ; legumine majore (3- 

 poUicari). — Valleys of Sonora; Sept. (949.) 



P. ACUTiFOLius, A^ar. TENUiFOLius : graciHs ; foliolis lanceolatis e basi pl. m. dilatata 

 hinc interdum sublobata seu lineari-lanceolatis ; calycis labio superiore brevi mu- 

 cronulato ; seminibus Isevibus nitidis. — Mountain-sides near the copper mines, New 

 MexicOj^and in Guadalupe Pass ; Oct. (950.) — Leaflets 2 or 3 inches long, most- 

 ly 2 or 3 lines wide at the base, thence tapering to an acute point. Cultivated 

 specimens, however, show broader leaiiets, more or less dilated or obsoletely sub- ' 

 lobed, or gibbous at the base, and passing into the type of P. acutifolius. 



P. ANGUsTissiMus (sp. uov.) : pereunis, laevigatus ; caulibus diffusis seu volubili- 

 bus gracilHmis ; stipulis ovatis minimis ; foliolis angustissime linearibus obtusius- 

 culis aveniis pedunculo paucifloro filiformi brevioribus ; calyce breviter campanulato, 

 labio superiore latissimo subemarginato dentibus inferioris ovatis obtusis a^quilongo ; 

 leguraine oblongo falcato plano S - 4-spermo ; . seminibus leviter rugulosis. — Stony 

 hill-sides, at the crossing of the Rio Grande above Dona Ana, New Mexico, July ; 

 and between San Pedro and Santa Cruz, Sonora, Sept. (951.) — Stems numerous, 

 from a firm perennial root, slender and very smooth. Leaflets l^ to 2 inches long, 

 a line or aline and a half wide, thickish, smooth, very minutely puberulent beneath 

 under a lens, longer than the petiole. Peduncle 2-5 inches long, loosely 2-5- 

 flowered. Pedicels longer than the calyx. Flowers 4 lines long ; the ample vcx- 

 illum and wings purple; the spirally coiled keel yellow. Pod 8-10 lines long, 3 



■ 



lines wide, narrowed towards the base, nearly glabrous ; the flat valves thin. 



P. Wrightii, Graj/, Pl. Wricjht. p. 43. Sides of stony hills, at the copper mines, 



New Mexico; Aug. (952.) — The specimens are much better than those of 1849, 



X 



and in fine flowering state. It is a percnnial, with a lignescent fusiform root, of 

 a foot or so in length, and an inch in diameter. Stems either prostrate or twining. 

 The leaflets vary considerably in shape; the lateral lobes sometimes little shortcr 

 than the middle one, and in the larger leaflets themsclves inclined to be two-lobed 



u 



at the apex. The racemes are rather many-flowered, with the bracts inclined to be 

 persistent. The young leguraes are destitute of the conspicuous style which tips 

 those of the former, chicfly fruiting specimens. The character of the species there- 

 fore needs some modiflcation. 



P. MACROPoiDES (sp. nov. § Microcochlc) : radice tuberosa ; caulibus decumbenti 



bus retrorsum hirsutis ; stipulis ovatis acuminatis nervosis ; foliolis ovalibus vel 

 subrhombeis integris aut supra mediura subunilobatis fol. infimum obtusis superi- 



; pedunculis folio pluries 



orum acutis pilis appressis utrinque hirto-pubescentibus ; 



longioribus puberulis plurifloris; calycibus subsessilibus v 



mibus lanceolato-subulatis ; alis corollae rotundatis vexillo 



mine deflexo lineari-falcato puberulo subcompresso 4-6-spermo. — Stony hills at 



duplo majoribus; le. 



^Sfinnino: to flower'when 



the copper mines, New Mexico ; Aug. (953.) — Stems b 

 only 2 inches long, extending a foot or two in length, decumbent or difl*usely spread- 

 ing, flexuose, thickly villous-hirsute ; the pubescence of the petiol&s similar, but not 

 revcrsed. Stipules 2 or 3 lines long, rather scarious. Pctioles 12- 18 lincs long. 

 Stipels subulate, longcr than the petiolules. Leaflets 9-18 lines in lcngth, mucro- 



