RH ot OE NETS Seale a M 
OEC NE " 
1921] 
PAYSON—MONOGRAPH OF THE GENUS LESQUERELLA 195 
step in the northward progression of this line of development. 
It is definitely separated from pinetorum by its conspicuous 
rosette and broad-bladed radical leaves. 
Although the type of L. pruinosa has not been seen there 
seems no doubt that Prof. Bethel's collection from the type 
locality is specifically identical with it. The only point of 
difference in Dr. Greene's description and the specimen seen 
is in the length of the stem. The type is described as having 
“peduncles and short racemes not greatly surpassing the foliage 
even in fruit." In Prof. Bethel's plant the fruiting inflorescence 
is carried well above the tuft of radical leaves. 
31. L. lata Wooton & Standley, Contr. U. S. Nat. Herb. 16: 
126. 1913; Wooton & Standley, Contr. U. S. Nat. Herb. 19: 
275. 1915. 
Perennial, densely stellate throughout, stellae rather small, 
rays numerous, branching, granular; stems erect or spreading, 
about 1 dm. long, simple; terminal bud (in type specimen) giv- 
ing rise to a very short stem, floriferous to the base; radical 
leaves 3—4 cm. long, blade entire, ob- 
tuse, broadly oval, narrowed to a 
long slender petiole; cauline leaves 
broadly oblanceolate, entire, obtuse, 
1-2 em. long; petals yellow, nar- 
rowly spatulate, about 7 mm. long; 
filaments linear; fruiting inflores- 
cence elongated or slightly com- 
pacted; pedicels sigmoid, 5-7 mm. 
long; pods usually erect, sessile, 
sparsely stellate-pubescent, globose 
or somewhat obpyriform, 1.5-3 mm. 
in diameter; styles slender, 3-4 mm. 
long; septum nerved, areolae not Triana Belts tee X 
tortuous; ovules 5-6 in each cell, 
funiculi attached to septum about one-fourth their lengths; seeds 
not winged. 
Distribution: in the White Mountains of southern New Mex- 
ico. 
Specimens examined: 
