(Vol. 8 
154 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
long, unbranched, lateral, terminal bud remaining undeveloped 
or rarely elongating to form a short sterile shoot; radical leaves 
broadly oblanceolate to nearly orbic- 
ular, entire, blade .5-2 cm. long, ab- 
.. ruptly narrowed to a slender petiole 
be (V, y^ 5-25 mm. long; cauline leaves linear- 
di oblanceolate, rather few, entire; petals 
yellow, frequently over 1cm. long, spat- 
ulate, filaments narrow, broader toward 
the base; fruiting inflorescence typically 
contracted and subumbellate, pedicels 
Fig. 10. Trichomesof L. oval- ascending or erect, .5- 1.5 cm. long, pods 
ifolia. X 25. ascending to erect, sul te, glabrous, 
globose or slightly oblong, 4-5 mm. in diameter, style slender, 
equalling or exceeding the pod; septum nerved, areolae not tortu- 
ous; ovules 5-8 in each cell, funiculi attached for more than half 
their lengths. 
Distribution: western Oklahoma and Kansas, southwestern 
Nebraska, northern Texas, northeastern New Mexico, and 
southeastern Colorado. 
pecimens examined : 
Nebraska: hills of upper Lawrence Fork, Kimball County, 
Aug. 11, 1891, Rydberg 22 (U. S. Nat. Herb.). 
Kansas: gypsum hills, Rooks County, June 20, 1897, Hitch- 
cock 107? (Mo. Bot. Gard. Herb. and U. S. Nat. Herb.) ; Coolidge, 
July, 1892, Hitchcock (Mo. Bot. Gard. Herb.). 
Oklahoma: grassy mountain side, near Crusher Spur, Murray 
County, April 12, 1913, Stevens 36 (Mo. Bot. Gard. Herb. and 
U. S. Nat. Herb.); Arbuckle Mountains, Davis, April 1, 1916, 
Emig 498 (Mo. Bot. Gard. Herb. and U. S. Nat. Herb.); dry 
gravelly banks, common, near Tishomoningo, Johnston County, 
April 15, 1916, Houghton 3573 (Mo. Bot. Gard. Herb.); rough 
hillside, near Knowles, Beaver County, May 6, 1913, Stevens 
348 (Mo. Bot. Gard. Herb.). 
Texas: rocky bluffs, Amarillo Creek, May 28, 29, 1902, Rev- 
erchon (Mo. Bot. Gard. Herb.); rocky bluffs, Galadoro, May 
30, 1902, Reverchon (Mo. Bot. Gard. Herb.) ; rocky bluffs on Red 
River, Randall County, June 9, 1901, Eggert (Mo. Bot. Gard. 
Herb.); rocky bluff near Canyon City, Randall County, June 10, 
