21 
pods smooth or rarely puberulent, very shortly winged with somewhat divergent 
obtuse teeth, on spreading pedicels.—Ravines throughout southern and western 
Texas, 
3. L. sordidum Gray, Low, with stems diftusely branching from the base, branches 
somewhat granulose-viscid ; stem leaves small, spatulate, incised-pi nnatifid, glabrous: 
raceines numerous, elongated and densein fruit: flowers very small: stamens 4: pods 
ovate, emarginate, winged, smooth, as long as the erect crowded pedicels.—In moun- 
tain valleys of western Texas. 
4. L. lasiocarpum Nutt. Low, 15 em. or less high, pubescent throughout with 
short spreading hairs: stem leaves spatulate, dentate or incised, the lowest and 
radical ones often pinnatifid : petals wanting: stamens2: the straight pedicels stout 
and inuch flattened, shorter than the pods which are round, hispidulous, and emargi- 
nate at apex with a narrow sinus.—In alluvial and sandy soil, western Texas. ‘This 
species includes L. Wrightii Gray. Associated with it is var. TENUIPES Watson, 
which is taller, more slender, less pubescent, with narrowerand more slender pedicels, 
which are as long as or exceed the glabrous pod. 
15. SYNTHLIPSIS Gray. 
Diffusely branching herbs, more or less canescent with stellate pubes- 
cence, with pinnatifid leaves, purple or yellow (rarely white) flowers, 
and oblong-elliptical emarginate many-seeded pods flattened contrary 
to the narrow partition and with acutely keeled winged valves, 
1. 5. Greggii Gray. Canescent or subcinereous: leaves obovate or oblong, coarsely 
sinuate-toothed or pinnatifid, mostly narrowed into a petiole: flowers rose-color or 
white: pods elliptical or oval, 8 to 14 mm. long, canescent, strongly emarginate, the 
compressed acutely keeled valves margined and produced at apex.—ITillsides along 
the lower Rio Grande, 
2. S. Berlandieri Gray, var. HISPIDA Watson. More or less villous, with little 
stellate pubescence: leaves oblong, laciniately pinnatifid and toothed, those of the 
stem sessile: flowers yellow: ovary densely hairy, the pod more loosely so, orbicu- 
lar, 6 mm, in diameter, slightly retuse at apex (or at both ends), the valves barely 
acute on the back, which is not produced into a margin at apex.—Near Corpus Christi 
Bay and Brazos Santiago; extending into Mexico with the type; 
16. BISCUTELLA L. 
Erect hispid or tomentose branching herbs, with entire or pinnatifid 
leaves, yellowish or white flowers (in ours), and laterally flattened pods 
in which the 1-seeded cells are indehiscent and nearly orbicular, sepa- 
rating at maturity from the persistent axis. 
1, B. Wislizeni Watson, Leaves ovate-lanceolate, tapering into short petioles, 
repand-deutate: pedicels filiform, 10 to 16 mm. long, longer than flower or fruit; 
flowers about 6 mm. in diameter: pods 10 to 12 mm. in width and about haif as high, 
broadly truncate above, deeply cordate at base: stigma conical.—Prairies and sandy 
banks along the upper Rio Grande and the “Staked Plains.” Dr. Havard aptly 
speaks of this as ‘‘ spectacle-fruited.” It is the Dithyrea Wislizeni Engelm. 
17. CAKILE Tourn. 
Fleshy sea-side annuals, with pinnatifid or lobed leaves, white or 
purple flowers in racemes opposite the leaves, and 2-jointed pods, the 
joints 1-seeded. 
