98 
branches, petioles, and peduncles very densely strigose with long whitish scaly hairs 
(sparsely strigose or even glabrous when old): pinnw about 5 pairs; leaflets 10 to 14 
pairs, oblong-linear, obtuse, inequilateral and slightly falcate, nearly glabrous: pod 
ovate or oblong, very hispid, 1 to 3-jointed.—A species of the low alluvial lands of 
the Gulf States and extending through the low coast lands of Texas to the lower 
Rio Grande. 
a+ ++ Leaflets 20 to 40 pairs. 
9. M. Berlandieri Gray. An erect shrub, with branches and sometimes petioles 
sparsely armed with short straight prickles: pinn® 4 to 6 pairs, strigose on the ribs 
beneath; leaflets linear, acutish, smooth: pod short-stipitate, oblong-linear, some- 
what pubescent, 8 to 10-jointed.—Along or near the lower Ria Grande towards its 
mouth: reported also by Reverchon fram the Sabinal, 
48. SCHRANKIA Willd. (SENSITIVE BRIAR. ) 
Herbaceous or somewhat shrubby plants, with recurved-prickly 
procumbent stems and petioles, twice-pinnate sensitive leaves of many 
small leaflets, axillary peduncles bearing globose heads or eylindrical 
spikes of small flowers, and a long narrow rough-prickly somewhat 
4-sided pod whose valves separate from and are usually narrower than 
the persistent partition. 
1. S. uncinata Willd. Prickles hooked: pinne 4 to 6 pairs ; leaflets elliptical, 
reticulated with strong veins beneath: pod oblong-linear, nearly terete, short- 
pointed, densely prickly, 5 cm. long.—An eastern species of dry sandy soils, extend- 
ing into Texas at least to Gillespie County and the lower Rio Grande, 
2, S. angustata Torr. & Gray, Leaflets oblong-linear, scarcely veined: pod 
slender, 4-sided, taper-pointed, sparingly prickly, about 10 em, long.—Another 
eastern species, found in Texas as far as San Diego and probably in the San Antonio 
region. 
3, §. platycarpa Gray. Leaflets oblong and more ciliate: pod broadly linear, 
flat, acuminate, about 7.5 em. long, the sides sparsely and the thickened margin 
densely echinate with very short prickles.—Dry stony prairies near New Braunfels. 
4, S. aculeata Willd. Apparently a form of this Mexican species is reported 
from Sutherland Springs (Wilson County), with densely pubescent long-beaked 
pods, 
49. LEUCZNA Benth. 
Trees or shrubs, with bipinnate leaves, white flowers in globose 
heads, and broadly-linear flat membrano-coriaceous 2-valved pods. 
1. L. retusa Benth. A glabrate shrub: pione 2 tod pairs; leaflets 6 to 8 pairs, 
obliquely obovate or broadly oblong, obtuse oF retuse, membranaceous and veiny: 
pod 15 to 25 om. long, about 12 mm. broad, more rigid and with thicker margin than 
in the next.—Throughout Texas south of the Colorado and west to New Mexico. 
9, L. glauca Benth. A small unarmed and glabrous tree? pinney 4 to 8 pairs; 
leaflets 10 to 20 pairs, linear, distant, acute, glaucous beneath : pod 12.5 to 15 cm. 
long, 16 to 20 mm. proad.—From San Saba to Devil’s River and adjacent Mexico 
( fide Sargent). 
3, L. pulverulenta Benth. Brancbes pulverulent-tomentnlose : pinne 15 to 18 
pairs; leaflets about 60 pairs, linear: pod 15 em. long, 14 to 18 mm. broad.—Southern 
‘Texas and valley of the lower Rio Grande. 
