124 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
long, with a few branched hairs, purple; petals purple, twice as long as the 
sepals; pods about 85 mm. long and 1.5 mm. wide, purplish, glabrous, stout, 
straight or curved downward; seeds in 2 rows, winged. 
Type in the U. 8. National Herbarium, no. 561991, collected on the dry hills 
near the Cueva on the west side of the Organ Mountains, April 25, 1907, by 
BE. O. Wooton and Paul C. Standley. 
ADDITIONAL SPECIMENS EXAMINED: Modoc, March 19, 1905, Wooton; Magda- 
lena Mountains, June, 1880, Vasey. 
This somewhat resembles A. angulata, but has much shorter, broader, pur- 
plish pods curved downward instead of upward. 
Dithyraea griffithsii Wooton & Standley, sp. nov. 
Stems erect, stout, branched, densely stellate-pubescent; cauline leaves en- 
tire, narrowly lanceolate, 25 to 40 mm. long, acute, narrowed to the base, 
sessile, finely stellate-pubescent on both surfaces; pedicels about 15 mm. long, 
slender, divergent; flowers numerous, at first congested, becoming more dis- 
tant after anthesis; sepals narrowly oblong, 8 mm. long; petals obovate, 
clawed, the whole petal 6 or 7 mm, long; fruit 10 mm. wide, the segments 5 
mm. high, truncate at the apex, cordate at the base, glabrous, conspicuously 
reticulate-veined, the border not well developed. 
Type in the U. S. National Herbarium, no. 486760, collected by Dr. David 
Griffiths on the Arroyo Ranch, near Roswell, September 1 to 4, 1903 (no. 5687). 
A specimen collected by Mrs. Matilda Coxe Stevenson near Zuni in 1902 (no. 
74) appears to be the same. 
From our other species, D. wislizeni, this may be distinguished at once by 
its glabrous, conspicuously veined fruit. Its cauline leaves, too, are quite 
entire, while in D. wislizeni almost all have a few sinuate teeth, at least near 
the base. 
Draba gilgiana Wooton & Standley, sp. nov. 
A densely cespitose perennial from a very thick, woody root covered at the 
crown with the persistent bases of old leaves: leaves mostly basal, very numer- 
ous, densély clustered, linear-oblanceolate, acutish, 35 mm. long and 3 mm, 
wide or less, tapering gradually into a slender, flat, yellowish petiole; blades 
bright green, glabrous, or with a very few scattered hairs; stems long and 
slender, ascending or reclining, 12 ecm. long or less, glabrous; cauline leaves 
few and remote, linear to oblanceolate, 4 to 10 mm. long, acute; flowers few, 
clustered at the end of the stem, the racemes elongating in fruit; pedicels 
Slender, glabrous, nearly erect, 5 or 6 mm. long; sepals rounded-oblong, 
glabrous, obtuse, 2.5 mm. long; petals bright yellow, about twice as long; fruit 
almost 6 mm. long, oblong-lanceolate, acute, glabrous, ending in a slender style 
slightly more than 1 mm. long. 
Type in the U. 8. National Herbarium, no. 561295, collected on Organ Peak 
in the Organ Mountains, September 23, 1906, at an altitude of about 2,550 
meters, by E. O. Wooton and Paul C. Standley. The plant was growing high 
up near the summit of the peak, in the Transition Zone, in rich, deep soil in 
the shade of oak chaparral. 
ADDITIONAL SPECIMENS EXAMINED: Van Pattens, August 29, 1894, Wooton; 
Organ Mountains, alt. 2040 meters, 1897, Wooton 675; Tortugas Mountain, 
September, 1898, Wooton. 
The specimen from Tortugas Mountain has even narrower leaves than those 
from the Organs. It seems improbable that a plant of the dry Lower Sonoran 
Zone can be the same as one found high up in the moist canyons. Our mate- 
rial from Tortugas Mountain, however, is insufficient for satisfactory deter- 
mination, 
