50 PLANTS WBIGHTIAN^. V. 



cent, and many of them as large, as those of the A. paniculata ; but they have not 

 the prominent veins underneath, and the flowers are three times larger. It is plainly 

 a pubescent variety of the " glabrous and very smooth " A. paniculata, Nutt., excel- 

 lent specimens of which have just come to hand in Lindheimer's collection of 1850. 

 In these the leaflets are all deeply retuse, or almost obcordate, from 12 to 18 lines 

 long ; in one specimen they are elliptical or narrowly oblong ; in another they are 

 broad and rounded, the larger ones over an inch in width. The spikes and dark- 

 purple flowers are much larger than in A. fruticosa : the fruit not seen. — To this 

 species must belong the "f A. fruticosa, var. subglabra," from Fredericksburg, 

 PI Lindh. 2. p. 174. 



J Glycirrhiza lepidota, Nutt Gen. 2. p. 106; Torr. 8f Grai/, Fl. 1. p. 298; 

 Gray, PI. Fendl. p. 31. G. glutinosa, Nutt. in Torr. Sf Gray, Fl. I. c. New Mex- 

 ico, coll. of 1851. — All the specimens I have seen, from whatever locality, have the 

 spikes considerably shorter than the leaves, and accord with the character of G. 

 glutinosa, Nutt., which I suppose is not diflerent from G. lepidota. 



135. Medicago sativa, Linn. Old fields near El Paso: introduced. 



136. Trifolium Bejariense, Moricand, PI. Nouv. Amer. p. 2. t. 2. T. macro- 

 calyx, Hook. Ic. PL t.215; Torr. 8f Gray, Fl. 1. p. 691. Western Texas, near 

 Austin, &c. 



137. HosACKiA puberula, Benth. PI. Hartw. p. 305. — Valley of the Limpia; 

 Aug. — The specimens accord with Coulter's, from Zacatecas. 



PETERIA, Nov. Gen. 



Calyx ebracteolatus, tubulosus, quinquelobus, lobis subulatis, duobus superioribus 

 altius coalitis. Vexillum obovatum, emarginatum, recurvum, alis oblongis obtusis 

 longe unguiculatis sequilongum : carina cuculliformis, obtusissima, alis brevior. 

 Stamina 10, filamento vexillari libero diadelpha. Ovarium lineare, stipitatum, mul- 

 tiovulatum. Stylus filiformis, adscendens, apice dense aspergillo-barbatus : stigma 

 terminale, barbatum. Legumen lineare, plano-compressum, breviter stipitatum, im- 

 marginatum, continuum, seepius abortu oligospermum ; valvis coriaceis. Semina 

 ovalia, compressa. — Herba glabrata ; caulibus e basi suffrutescente ramosissimis, ra- 

 mis scopariis teretibus gracillimis ; stipulis spinosis ; petiolis filiformibus persistenti- 

 bus, aliis aphyllis, aliis foliolis plurimis parvis oblongis gerentibus ; racemis virgatis 

 dissitifloris erectis ramulos terminantibus ; floribus pendulis flavidis. 



138. Peteria scoparia. — Mountain valleys beyond the pass of the Limpia, 

 Aug. ; in fruit. Also in the collection of 1851 ; in flower. Also near Lake Enci- 

 nillas, north of Chihuahua, Wislizenus, No. 126. — Stems 2 or 3 feet high, terete, 

 glaucescent, much branched and bushy. Stipules a pair of divaricate prickles, 2 or 

 3 lines long. The persistent petioles are from 2 to 4 inches long, filiform, slender, 

 not indurated nor spinescent, all the upper ones on many specimens aphyllous ; the 

 others usually bearing from 9 to 15 small leaflets. These are elliptical or lanceo- 

 late, petiolulate, mucronate, from one to three lines long, when young more or less 

 canescently pubescent, as are the young branches and calyces. Racemes terminal, 

 slender, 8 to 12 inches long, very sparsely flowered. Pedicels 3 to 5 lines long. 



