V. PLANTS WRIGHTIAN^. • 61 



157. Neptunia lutea, Benth. in Hook. Jour. Bot. 4. p. 356. Low and moist 

 prairies, Zacate Creek ; and on the Rio Grande, Texas. — From New Braunfels, 

 Lindheimer has sent a variety with brighter yellow flowers, and with the ovary and 

 young pod pubescent. 



158. Desmanthus velutinus, Scheele in Litincea, 21. p. 456; Grat/, PL Lindh. 2. 

 p. 183. Hills of the Rio Seco, Western Texas; June. 



f D. RETicuLATus, Bcnth. in Hook, Jour. Bot. 4. p. 357. Near Austin, Texas. 



X Mimosa fragrans. Gray, PI. Lindh. 2. p. 182. Between Texas and New 

 Mexico; coll. of 1851; with ripe fruit. — The leaflets are rather shorter than in 

 Lindheimer's Texan plant. The ripe pods, of a thin, chartaceous texture, are most- 

 ly much constricted between the seeds, perfectly smooth, and unarmed, or very rare- 

 ly with one or two minute and weak prickles on the margin ; which, as well as the 

 more numerous and usually narrower leaflets, distinguishes it from 



t M. BoREALis, Gray, PI. Fendl. p. 39. Between the frontiers of Texas and El 

 Paso; coll. of 1851; with ripe fruit. — The specimens are exactly like those of 

 Fendler ; the branches armed with very strong prickles, and the leaves very small ; 

 the margins of the pod also armed with a few large, hooked prickles.* 



159. M. BOREALIS, var. ? Texana: foliolis 5-6-jugis oblongis. — Hills near Aus- 

 tin, May, in flower ; and on the western borders of Texas, in fruit. Also in the 

 coll. of 1851. — In foliage this is between M. borealis and M. fragrans; but with 

 the pods of the former. I believe the same plant was gathered by Gregg, near 

 Buena Vista and Cadena ; and it is the plant referred to under M. fragrans in PL 

 Lindh. I. c. as formerly gathered by Mr. Wright in Texas. 



160. M. BiuNcirERA, Benth. PI. Hartiv. p. 12. Sf in Hook. Jour. Bot. 4. p. 409. 

 Mountain valleys, 30 or 40 miles east of the Rio Grande, in Southern New Mexico, 

 Sept. ; in fruit. Dr. Gregg also found it near Ojito. — The legumes, which were 

 before unknown, are narrowly linear, falcate-incurved or sickle-shaped, glabrous or 

 nearly so, an inch to an inch and a half long, less than two lines wide, the margin 

 beset with one or two hooked prickles, or more commonly naked. — Mr. Bentham 



Strombocakpa cinerascens (sp. nov.): erecta, humilis ; ramulis foliisque cinereo-pubescentibus ; pin- 

 nis unijugis ; foliolis oblongis 8- 12-jugis ; pedunculo folium sequante ; spicis globosis ; calyce superne to- 

 mentoso dimidium corollffl adajquante. — Valley near Azufrora, New Leon, Dr. Gregg. — " Shrub 6-12 

 inches high." The slender thorns longer than the leaves. Leaflets twice as large as those of S. reptans. 

 Fruit not seen. 



* A closely allied North Mexican species, but well distinguished by having the leaflets as well as the 

 pinnoe reduced to a single pair, is characterized by Mr. Bentham as follows : — 



"Mimosa zygophylla (sp. nov.): glabra; aculeis infrafoliaceis solitariis recurvis ; pinnis foliolisque 

 unijugis, his parvis oblique orbiculatis crassiusculls ; pedunculis folio sublongioribus ; capitulo globoso ; 

 floribus pentameris ; legumine glabro subfalcato acutissimo margine nudo vel parce aculeate. — La Va- 

 querla towards San Juan, 30 miles from Saltillo, Wislizenus. Near Saltillo and Monterey, Gregg. — Al- 

 lied to M. depauperata ; but perfectly glabrous ; the leaflets rather larger and thicker (from one to one and 

 a quarter of a line long), never more than one pair on each pinna, of which also each leaf has but one 

 pair. The pod, from an inch to an inch and a half long, is reddish and rather glaucous in the dry state, 

 very smooth, ending in a very sharp point. The shrub is said to be two or three feet high. I have seen 

 the flowers only in a withered state." Benth. in lilt. 



VOL. III. ART. 5. 9. 



