Se Se oe ee 
1906] NELSON—ROCKY MOUNTAIN PLANTS 49 
very delicate, apparently often wholly wanting: stamens 5, very 
short: ovule solitary; the seed smail, oval, slightly compressed 
and subcarinate, minutely but distinctly papillose-roughened and 
with a waxy conspicuous strophiole. 
Most nearly related but very distinct from M. perjoliata (Donn.) Howell, 
Erythea 1:38, a plant of the Pacific states. Possibly all of the central Rocky 
Mountain specimens named M. perfoliata belong here. The type specimens 
were collected by the Misses Dorothy Reed and Vie Willits, June, 1905. Miss 
Willits, in whose honor the plant is named, later secured an abundance of fruiting 
specimens. Type locality, shady muddy banks, Big Horn, Sheridan Co., Wyo- 
ming. 
Lesquerella latifolia, n. sp.—/erennial, silvered witha fine 
lepidote stellate pubescence throughout: stems numerous, from 
among the crowded rosulate crown leaves, decumbent at base, spigad- 
ing, 5-15°™ jong: radical leaves suborbicular, oval, or rhombic, 
~ sometimes broader than long, from 1-3°™ in diameter; the petioles, 
slender, often much longer than the blade; cauline leaves from 
broadly obovate to spatulate, all cuneately tapering into a slender 
petiole: racemes of showy bright-yellow flowers dense, elongating 
in fruit: petals spatulate, g-10™™ long, twice as long as the oblong 
sepals: siliques elliptic, very perceptibly stipitate, 5-6™™ long, erect 
on §-shaped pedicels of about the same length; style slender, 3-4"™ 
long; cells about 5-ovuled. 
This is based upon Mr. L. N. Goodding’s no. 625, from Karshaw, Meadow 
Valley Wash, southern Nevada, Apr. 26, 1902. It has been distributed as L. 
montana, a species from which it is as far removed as t> characters as it is geo- 
graphically. . 
Lesquerella Lunellii, n. sp.—Pale green, modetately and minutely 
stellate-pubescent throughout: caudex a mere crown surmounting 
the slender tap root: stems few to several, ascending or assurgent, 
very slender (almost filiform), 3-15°™ long (including the raceme): 
leaves narrowly linear-oblanceolate, 1-2°™ long; the lower tapering 
into the slender petioles: raceme at length open and long for the 
plant: sepals purplish-green, linear-oblong, subacute, 4-5™™ long: 
the spatulate-obovate petals nearly twice as long, the upper half 
of the blade a fine purple, shading into the yellow of the lower half 
and the claw: silique globose, 4-5™™ in diameter; the slender 
