[Vol. 8 
222 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
cauline leaves oblanceolate to linear, 8-15 mm. long; petals 
yellow, narrowly spatulate, 6-7 mm. long; filaments slightly 
and gradually broadened toward the base; fruiting inflorescence 
elongated; pedicels erect or ascending, straight or slightly sig- 
moid, 5-8 mm. long; pods erect or ascending, sessile, rather 
sparsely stellate-pubescent, ovoid, not compressed, usually 
acute at the apex, 5-6 mm. long; styles rather stout, 3-4 mm. 
long; septum nerved, perforate, areolae not tortuous; ovules 
2-3 in each cell, funiculi attached to the septum for less than 
one-half their lengths; seeds not winged. 
Distribution: southwestern Wyoming and southern Idaho. 
Specimens examined: 
Wyoming: Piedmont, June 7, 1898, Nelson 4564 (Rky. Mt. 
Herb., TYPE, and Mo. Bot. Gard. Herb.). 
Idaho: open stony slopes near base of peak, south end of 
Soldier Mountains, June 26, 1916, Macbride & Payson 2897 
(Mo. Bot. Gard. Herb., Rky. Mt. Herb., and U. S. Nat. Herb.). 
L. prostrata and L. utahensis are certainly very closely related, 
and it is quite possible that collections showing characters in- 
termediate between the two may be made in northern Utah. 
In the Idaho specimen the septum is so largely perforate that 
only a narrow margin remains around the replum. 
49. L. diversifolia Greene, Pittonia 4: 309. 1901. 
Perennial, densely stellate-pubescent throughout with many- 
rayed stellae, rays distinct, 
forked near the base; 
caudex enlarged, clothed 
with the persistent leaf- 
bases of previous years, 
frequently branched ; stems 
usually prostrate, 4-15 cm. 
long, unbranched; termin- 
al bud remaining undevel- 
oped ; radical leaves 2-6 cm. 
Fig. 33. L. d li Habit sketch l4. . 
ME + "i M NEM long, blade entire, ovate to 
nearly orbicular, usually 
rather abruptly narrowed to the petiole, obtuse or mpr cauline 
leaves narrowly oblanceolate, rather few, 5-25 mm. long petals 
