240 RypBerG: STUDIES ON THE Rocky MOUNTAIN FLORA 
i Draba brachystylis sp. nov. 
Perennial with a taproot : stems several, decumbent or ascend- 
ing with divergent branches, 1-1.5 dm. high, hirsute: basal leaves 
oblanceolate or spatulate, 1.5-2 cm. long, hirsute with branched 
hairs; stem leaves few, oblong or lanceolate, sessile: pedicels 
short, in fruit 2-5 mm. long, spreading: pod oblong, finely stellate, 
8-12 mm. long, ascending: style very short, almost obsolete. 
The type sheet of this species is labeled Draba Carolina var. 
micrantha, but the plant evidently is a perennial and nearest related 
to D. streptocarpa; but differs in the divergently branched stem, 
stellate pod and the almost obsolete style. It grows at an altitude 
of about 3000 m. 
Urau: Alta, Wasatch Mts., 1879, WZ. E. Jones, 1357 (type 
in herb. N. Y. Bot. Gard.). 
- Draba decumbens sp. nov. 
Perennial with a taproot, a short cespitose caudex and a large 
rosette of basal leaves: stems decumbent, 1-2 dm. high, sparingly 
pubescent, few-leaved ; basal leaves broadly spatulate, entire, 2-4 
cm. long, finely grayish stellate, rather thick; stem leaves ovate 
to ovate-lanceolate, sessile, entire, 1-2 cm. long: calyx sparingly 
villous; petals pale yellow, about 4 mm. long: pedicels very 
short, in fruit 2-4 mm. long: pod oblong, 8-15 mm, long, densely 
pubescent, usually twisted: style about 1 mm. long. 
This is a member of the D. aurea group, and distinguished 
from all the North American species by its decumbent stems, large, 
thickish entire basal leaves. 
Cotorapo: Gray’s Peak, 1895, Rydberg (type in herb. N. Y. 
Bot. Gard.). 
- Draba Macouniana sp. nov. 
Annual, almost scapose: stems ascending or decumbent, less 
than 1 dm. high, glabrous and shining; basal leaves numerous, 
broadly spatulate or obovate, 5-10 mm. long, finely stellate, rather 
thick ; stem leaf usually one, oval, obtuse, 5 mm. long: petioles n 
fruit spreading, 6-8 mm. long: petals white, less than 3 mm. long: 
pod oblong-linear, erect, about 1 cm. long and 2 mm. wide: style 
obsolete. 
This species is nearest related to D. crassifolia, but differs in 
the whiter flowers, and the broad and short basal leaves, which 
are finely stellate, not hirsute ciliate. The type grew at an alti- 
tude of about 2000 m. 
