[Vol. 8 
152 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
V. pulchella Kunth & Bouché, Ann. Sci. Nat. Bot. III. 2: 
229. 1849. 
V. Engelmannu Gray, var. g. elatior Gray, Bost. Jour. Nat. 
Hist. (Pl. Lindh.) 6: 145. 1850. 
Alyssum Engelmannii Kuntze, Rev. Gen. Pl. 2: 931. 1891. 
Perennial, canescent with a coarse, stellate pubescence, stellae 
rather conspicuously granular roughened, rays simple or forked 
at the base; caudex branching; stems usually many, erect or 
slightly decumbent, unbranched, 1.5-4 dm. long, usually lateral, 
the terminal bud producing a shorter sterile shoot; radical leaves 
3-7 em. long, narrowly lanceolate, acute, the outermost broader, 
nearly obovate, rarely persisting, all gradually narrowed to a 
slender petiole; cauline leaves narrowly oblanceolate to nearly 
linear, narrowed to a slender base, entire; flowers rather showy; 
petals yellow, spatulate, about 1 cm. long, filaments rather 
3 broad, gradually dilated toward the 
of N {A base; fruiting inflorescence typically 
«e UN. < subumbellate, pedicels nearly straight, 
AL from horizontal to erect, 1-1.5 cm. 
Bice pods horizontal to erect, glab- 
rous, globose, 4-7 mm. in diameter, 
KK P. bm. about 1 mm. long; styles slender, 
exceeding the pods; septum thickish, 
Fig. 9. Trichomes of L. Engel- nerved, areolae not tortuous; ovules 
mannii. 5-6 in each cell, funiculi attached to 
septum E. rem three-fourths their lengths. 
Distribution: from western Oklahoma south across central 
Texas. 
Specimens examined: 
Oklahoma: hillside, Shattuck, Ellis County, May 17, 1914, 
Clifton 3023 (U. S. Nat. Herb. and Mo. Bot. Gard. Herb.). 
Texas: calcareous rocky upland, Dallas, April, 1879, Rever- 
chon (U. S. Nat. Herb.); rocky hills near Dallas, April, 1880, 
Reverchon (U. S. Nat. Herb.); calcareous soil, Dallas, April 1, 
1900, Reverchon (U. S. Nat. Herb. and Mo. Bot. Gard. Herb.); 
calcareous soil near Dallas, April 10, 1900, Reverchon (U. S. Nat. 
Herb. and Mo. Bot. Gard. Herb.); limestone prairies, Five Mile 
Creek, Dallas County, April 30, 1900, Reverchon (U. S. Nat. 
Herb. and Mo. Bot. Gard. Herb.); dry, stony hills near West 
