80 
what elongating: calyx covered with a fine appressed pubescence, the acuminate 
teeth nearly equaling the tube: petals deep pink or red, half longer.—On the rocky 
top of Comanche Peak (Reverchon). 
14. TEPHROSIA Pers. (HOARY PEA.) 
Hoary perennial herbs, with odd-pinnate leaves, mucronate and veiny 
leatlets, white or purplish racemed flowers, a broad and usually silky 
standard, coherent wings and keel, diadelphous or monadelphous 
stamens, and a flat linear several-seeded pod. 
1. T. Lindheimeri Gray. Stems rather stout, prostrate or ascending, flexuose 
branching, tomentulose-pubescent : leaflets 7 to 13, roundish-obovate or cuneate, often 
retuse, sericeous especially beneath, 16 to 36 mm. long: the large purple flowers in lax 
many-flowered racemes exceeding the leaves: pod densely soft pubescent.—Prairies 
and hills between the Colorado (as far up as the San Saba) and the lower Rio Grande. 
15. INDIGOFERA L. (INDIGO.) 
Herbs or shrubs, mostly canescent with appressed hairs fixed by the 
middle, with odd-pinnate leaves and obscurely veined leaflets, pink or 
purplish flowers in naked axillary spikes, small roundish standard, co- 
herent wings and keel, diadelphous stamens, and a 4-angled or teretish 
1 to several-seeded pod septate between the seeds. 
1. I. leptosepala Nutt. A perennial herb, 1.5 to 6 dm. high: leaflets 5 to 9, oblan- 
ceolate: spikes very loose, longer than the leaves: pods linear, 6 to 9-seeded, obtusely 
4-angled, reflexed, 2.5 cm. long.—A species of the Southern and Western States and 
apparently extending throughout Texas. 
9. I. Lindheimeriana Scheele. A cinereous erect perennial herb: leaflets 7 to 15, 
larger, oval or obovate: spikes shorter than the leaves: pods longer, linear, obscurely 
if at all angled, thickened at each suture, reflexed and arcuate.—Between the Colo- 
rado and the Rio Grande. 
16. BRONGNIARTIA HBK. 
Erect shrubs, with odd-pinnate leaves, numerous small leaflets, herba- 
ceous stipules but no stipels, solitary and axillary rather conspicuous 
violet or flesh-colored flowers and a flat oblong or broadly linear pod. 
1. B. minutifolia Watson. A low shrub 3 to 9 dm. high, much branched, the slen- 
der glaucous-green branchlets nearly glabrous: leaves 2.5 to 5 em. long, with slender 
rhachis; leaflets 10 to 20 pairs, linear, revolute, 2 to 3 mm. long: flowers on short 
naked peduncles: pod glabrous, oblanceolate, 18 mm. long, attenuate to a stipe.— 
Foothills south of the Chisos Mountains, Western Texas (Havard). 
17. PETERIA Gray. 
Shrubby and rigid branching, smooth, with odd-pinnate leaves, nu- 
merous very minute leaflets, small subulate spiny stipules and no stipels, 
terminal racemes of scattered yellowish flowers, and a flat linear straight 
pod. 
1. P. scoparia Gray. Stems 6 to 9 dm. high, glaucescent, much branched and 
bushy : stipules a pair of divaricate prickles; persistent petioles filiform and slender, 
all the upper ones often leafless, the others with 9 to 15 small elliptical or lanceolate 
