314 plantjE nov^ thurberian^. 



cium found in one instance sheathing a sterile pistil, no less than the incurved embryo, 

 prove it to be papilionaceous and probably of the subtribe Galegeae. The branches, 

 with the foliage, &c., are minutely canescent when young. They are armed with 

 straight, mostly geminate, and apparently infra-stipular spines. Leaves often fascicled 

 in former axils, simply and abruptly pinnate, very short-petioled, the leaflets occupying 

 the rhachis almost down to the base : these are oblong or obovate, from 3 to 5 lines 

 long, obtuse, pale and cinereous, minutely petiolulate, and veiny. Flowers apparently 

 few in short axillary racemes. Pedicels as long as the calyx, nodding in fruit. Calyx 

 canescent, two-lipped ; the upper lip emarginate-two-lobed, the lower three-parted : 

 lobes obtuse. Filaments diadelphous, 9 and 1. Ovary linear, one-celled, many-ovuled, 

 glandular, nearly terete, sessile. Style after anthesis inflexed, villous above, often per- 

 sistent on the legume : stigma terminal, capitellate. Legume indehiscent '? thick and 

 fleshy, about an inch long, somewhat compressed, sometimes two-seeded, when it is 

 constricted between the seeds, more commonly one-seeded, when it is often lageniform, 

 the seed being near the summit of the pod and the long base contracted and terete. 

 Seed large, oval, not strophiolate. Cotyledons thick and fleshy, but flat, accumbeut on 

 the incurved and slender radicle, 



RoBiNiA Neo-Mexicana (sp. nov.): aculeis stipularibus subrecurvis; foliolis ellip- 

 ticis oblongisve ; pedunculis hispidiusculis calycibusque (dentibus subulato-lanceolatis) 

 glanduloso-pubescentibus ; racemis brevibus confertifloris ; corolla rosea. — Dry hills 

 on the Mimbres, New Mexico; May, 1851: in flower. (Western New Mexico, Dr. 

 Woodhouse, in herb. Torr. : foliage only.) — " Shrub from 4 to 6 feet high." The ra- 

 cemes are short and many-flowered, like those of E. viscosa, and the flowers of about 

 the same size. The peduncles are only minutely hispid, as in some forms of jR. hisjnda, 

 but the teeth of the calyx are proportionally shorter and less pointed than in that spe- 

 cies. The branches exhibit none of the clammy exudation of R. viscosa ; and the 

 stipular spines are often three lines long, very sharp, and rather stout. The fruit is 

 not yet known.* 



Dalea Greggii (sp. nov.) : suffruticosa, undique tomentoso-sericea, canescens ; ra- 

 mis floridis decumbentibus vel diffusis demum nunc glabratis glanduliferis ; foliis bre- 



' As this sheet is passing through the press, flowering specimens of this RoKnia, gathered on the Mimbres 

 by Dr. Henry, have come to hand; also fruiting specimens collected in the mountains east of the Rio Grande 



by Dr. J. M. Bigelow. The latter have nearly the foliage and exactly the pods of R. viscosa, to which 



they might be referred except that there is no trace of the clammy exudation. 



