V. PLANTS WRIGHTIANiE. 63 



numerous short, uncinate prickles. Leaflets 3 to 5 lines long. Flower swhite, ac- 

 cording to Mr. Wright, yellowish, according to Dr. Gregg. Legume two inches or 

 more in length, with a stipe-like base half an inch long, very smooth. — A well- 

 marked species of the section Habbasia Rubicaules. 



165. Calliandra Chamjedrys, Engelm. in PI. Fendl. p. 39; var. foliolis oblongis 

 (1-2 lin. longis). — Hills on the Rio Grande, Texas, in great abundance, July ; in 

 flower. — " Plant a foot high." The leaflets are pilose when young, with longer and 

 looser hairs than those of C. Californica, soon glabrate, and they are coarsely retic- 

 ulate-veined from a prominent midrib. The pinnae are commonly two pairs, some- 

 times three. — C. Chamgedrys must be critically compared with C. eriophylla of 

 Bentham, who, I perceive, has referred one of Dr. Gregg's Chihuahuan specimens 

 to that species. The leaflets are soon glabrate, and the pinnae frequently unijugate. 



166, 167. "C. coNFERTA (sp. uov.) : humilis ; ramulis petiolisque pubescentibus ; 

 pinnis unijugis ; foliolis 8- 12-jugis parvis oblique oblongis subcoriaceis nitidulis 

 subtus sericeo-villosis ; pedunculis petiolo brevissimo longioribus subcorymbosis ; 

 floribus paucis sessilibus pilosis ; calyce corollse dimidium aequante ; legumine 

 adpresse villoso, valvulis medio membranaceo-coriaceis crasse marginatis. — Fruticu- 

 lus semipedalis. Stipulae lanceolato-subulatse, lineam longse. Petiolus communis 

 stipulis fere brevior. Pinnae semipollicares ; foliolis vix 2 lin. longis, confertis, villis 

 longis paginae inferioris obtectis, supra glabriusculis. Pedunculi subfasciculati, 2 - 

 4 lin. longi. Flores in capitulo 5-9, (staminibus neglectis) vix 2 lin. longi. Ca- 

 lyces breviter 5-dentati. Stamina (ex sicco) pallida, vix semipollicaria. Legumen 

 sessile, basi longe angustatura, sesquipollicare, 3 lin. latum. — This species ranks 

 with the Nitidcc Unijugcc, near C. brevipes, and is readily distinguished by its small 

 stature, few leaflets and flowers, and very hairy leaves. In these respects it is near- 

 er C. eriophylla; but it appears never to have more than one pair of pinnae, and 

 the form and proportion of the flowers are dififerent." Benth in litt. — Hills at the 

 head of the San Felipe, in flower ; and on Zacate Creek, July, in fruit : also on the 

 Rio Grande, Texas. 



168. C. HERBACEA, Engelm. in PL Fendl. j). 39. Mountain valleys in the Pass of 

 the Limpia, Aug.; in fruit. Also in the collection of 1851, from the same region, 

 both in flower and fruit. — Stems numerous from a thick and lignescent caudex, 

 three or four inches long, slender, spreading. Leaflets from one to two and a half 

 lines long, subcoriaceous, when young villous beneath and on the margins with loose 

 silky hairs, at length glabrate. Flowers apparently pale purple ; the calyx and co- 

 rolla pubescent, becoming glabrate ; the stamens exserted for a quarter of an inch. 

 Legumes 2 or 2i inches long, 3 lines wide, minutely puberulent under a lens, the 

 valves chartaceo-coriaceous, with very tumid narrow margins, bursting elastically in 

 the manner of the genus. Seeds oval, mottled. — I suspect it is not speciflcally 

 distinct from Calliandra humilis, Benth. in Land. Jour. Bot. 5. p. 103, from Zacate- 

 cas. No. 511 of Coulter's Mexican collection. 



169. Desmanthus Jamesii, Ton: Sf Gray. Fl. 1. p. 402? Gray, PL FendL p. 

 38 ; var. legumine breviore acutato. — Mountain valleys in the Pass of the Limpia ; 

 Aug. — This is the same as the plant of Fendler's collection, above cited, only the 



