V. PLANT7E WRIGHTIAN^. 43 



the Pecos; Aug. Also in the collection of 1851. — Shrub from one to three feet 

 high, erect, much branched. Leaves simple, 3 to 4 or 5 lines long, silvery-canes- 

 cent, like the branchlets, peduncles, and outside of the calyx, with a very fine matted 

 pubescence. Sepals 5, purple inside ; four of them nearly equal, lanceolate from a 

 broad base, acuminate, about 3 lines long, the fifth smaller and linear. The three 

 upper petals very small, linear-spatulate, appearing like sterile filaments. Stamens 

 wholly distinct, the two intermediate rather shorter. Fruit beset with small and 

 slender prickles, which are glochidiate at the apex only. — Except that the leaves 

 are not villous, this species is scarcely at variance with the imperfect character of K. 

 pauciflora, D C. ; but the drawing upon which that species was founded represents 

 a low or procumbent plant, much like the K. secundiflora. Specimens just received 

 in Mr. Wright's collection of 1851 appear to show that K. secundiflora and K. 

 lanceolata are hardly specifically distinct. — K. cinerea, Schauer, with trifoliolate 

 leaves, is also in Coulter's Mexican collection (No. 735), from Zimapan. 



LEGUMINOS^. 



107. Phaseolus retusus, Benth. PL Hartw. p. 11 ; Grai/, PL Lindh. 2. ]). 

 170. P. maculatus, (Sc/iee/e in LiniKea, 21. jo. 465. On the Rio Grande, Texas ; 

 and in the bed of the Limpia ; Aug. — " Stems trailing, 6-8 feet long : flowers 

 purple." 



108. P. Wrightii (sp. nov.) : volubilis, puberulus ; ramis gracilibus ; foliolis 

 hastato-trilobis, lobis obtusissimis, lateralibus nunc repando-angulatis terminali 

 oblongo seepius dimidio brevioribus ; pedunculis folio longioribus perpaucifloris ; 

 bracteis bracteolisque lanceolatis minimis deciduis ; pedicellis calyce brevi duplo lon- 

 gioribus ; calycis labio superiore truncato emarginato, dentibus lateralibus triangu- 

 latis acutis infimo brevioribus ; legumine pendulo compresso falcato (ultrapollicari) 

 stylo gracili cuspidato tenuiter pubescente, valvis membranaceis ; seminibus com- 

 pressis rotundatis subquadratisve rugosis. — Declivity of a mountain, near El Paso ; 

 Sept. — This is nearly allied to the S. Californian Phaseolus (Drepanospron) filifor- 

 mis, Benth., Voy. Sulph., and is perhaps a variety of it ; but the foliage is coarser, 

 the flowers are little smaller than those of P. paniculatus, and the legumes (over 

 an inch long, 6 - 8-seeded) and seeds are fully t^vice as large. From P. pedicella- 

 tus, Benth., a Mexican species (which Walpers wrongly says is from Brazil), it 

 differs in its pubescence, in the form of the leaflets, in the minute and deciduous 

 bracts, and in the shorter pedicels. The seeds are either suborbiculate with a 

 truncate or excised base, or sometimes nearly quadrate, coarsely rugose.* 



f P. ACUTiFOLius (sp. uov.) : volubiHs ; ramis gracillimis puberulis ; foliolis sub- 



* P. sinuatus, Nutt., of which I have fine specimens from Rugel's Florida collection, No. 132, is widely 

 different from P. perennis ; but is apparently closely allied to P. pedicellatus, Benth. The leaflets of 

 some of the lower leaves are rounded, retuse, and entire. 



Phaseolus bilobatus, Engehn. in WisKz. Mem. N. Mex. p. 109, is evidently the same as P. heterophyl- 

 lus, Benth. PI. Hartw. No. 50, and apparently also of Willdenow, who describes the leaflets as linear- 

 oblong, and the root as perennial (not annual, as De CandoUe states) : in Hartweg's specimens it is 

 tuberous. 



