WOOTON AND STANDLEY—NEW PLANTS FROM NEW MEXICO. 125 
Our species is nearest D. petrophila Greene, but it is much more slender and 
nearly glabrous, while the cauline leaves are fewer and more reduced; the 
basal leaves, too, are different in outline. 
The plant was marked as a new species in the National Herbarium by Dr. 
E. Gilg, but apparently was never published by him, probably because of the 
scantiness of the material he had examined. 
Draba tonsa Wooton & Standley, sp. nov. 
A low perennial, 6 cm. high or less, densely cespitose from a long, thickened 
root; leaves in a dense cluster at the base of the scape, linear-oblanceolate, 
obtuse, 6 to 18 mm. long, glabrous except for the long-ciliate margins; stems 
scapose, with a few scattered leaves very unlike the basal ones, glabrous; 
cauline leaves oblong to ovate, thick, 5 to 16 mm. long, 2 to 6 mm. wide, obtuse 
or acutish, glabrous, or with a few long hairs on the margins; flowers congested 
at the ends of the simple stems, few, on glabrous pedicels 3 mm. long or less; 
sepals broadly rounded-oblong, obtuse, glabrous, 2.55 mm. long; petals bright 
yellow, about twice as long as the sepals; ovary glabrous, with a long, slender 
style; mature fruit not seen. 
Type in the U. S. National Herbarium, no. 225083, collected on Hermits Peak, 
in the Las Vegas Mountains, in August (year not given), by F, H. Snow. Also 
collected near Beulah, at an altitude of 2,400 meters, by T. D. A. Cockerell. 
Although our specimens have no fruit, we feel safe in describing them as new, 
for they seem amply distinct from D. streptocarpa, the most nearly related spe- 
cies, in their glabrous stems and nearly glabrous leaves, the sepals, too, being 
glabrous, and the cauline leaves broader. 
Cheirinia desertorum Wooton & Standley, sp. noy. 
Stout, herbaceous biennial or short-lived perennial, 30 to 50 cm. high, with 
one or several rigid, more or less angled stems rising from a dense cluster of 
basal leaves, the whole plant cinereous throughout with the appressed, 2-parted 
hairs common in the genus; basal leaves very numerous, 10 to 20 cm. long, 
narrowly lanceolate or oblanceolate, tapering into a slender petiole, acute, 
mostly entire, or some with a few coarse teeth, persisting until the plant is 
in fruit; cauline leaves linear, 3 to 5 cm. long, strongly ascending or erect; 
flowers small, 6 to 8 mm. long, pale yellow, the claws of the petals little if at 
all longer than the sepals; pods almost terete, 3 to 7 cm. long, erect or strongly 
ascending, on short, thick, ascending pedicels. 
Type in the U. S. National Herbarium, no. 563775, collected near Hachita, 
June 16, 1906, by E. O. Wooton. 
From the description this would appear to be most closely related to C. parvi- 
flora, and upon using Doctor Rydberg’s key to the genus in the Flora of 
Colorado one would run to that species at once. But our plant is affiliated with 
C. bakeri and C. argillosa in habit and other characters, and is found in dry 
rocky soil. It is easily distinguishable from either of these species by its small 
flowers. It is somewhat anomalous in a genus of plants that lose their basal 
leaves usually before the flowers appear, and especially so in that it inhabits 
perhaps the driest and hottest region from which species of the genus have 
been reported. 
Euklisia valida (Greene) Wooton & Standley. 
Disaccanthus validus Greene, Leaflets 1: 225. 1906. 
Disaccanthus mogollonicus Greene, loc. cit. 
Disaccanthus luteus Greene, loc. cit. 
All these may be Streptanthus carinatus Wright, but that is described as 
having a purple calyx and petals. In our plants they are always yellow. 
