258 
EDWIN BLAKE PAYSON 
glabrous except for short, unbranched marginal cilia: scapes glabrous, 
rather stout, scarcely i cm. long: flowers unknown: fruiting inflores- 
cence corymbose: pods 4-6, broadly lanceolate, flattened, glabrous, 
about 5 mm. long, 3 mm. wide; style stout, scarcely i mm. long: seeds 
2-4 in each cell, not winged. 
This plant was evidently recognized as distinct by Dr. E. Gilg for 
I find some specimens in the Rocky Mt. Herbarium labeled by him 
with a name which has never been published. The aspect of this 
species and the next suggest D. suhsessilis Watson. This resemblance 
is however probably not indicative of any real relationship. 
Specimens Examined. — Utah: Fish Lake, Uintah Mts., June 17, 
1902, Goodding; Little Cottonwood Canyon, Salt Lake Co., Aug. 3, 
1904, Garrett, no. 1555; Alta, Wasatch Mts., Aug. 12, 1879, Jones, 
no. 1235. Wyoming: La Plata Mines, Snowy Range, Aug. 29, 1898, 
E. Nelson, no. 5246a (type in Ry. Mt. Herbarium). The type was 
found on the same sheet with two specimens of andina'' and was 
given an '*a" number. Other sheets of this collection in various 
herbaria may be found also to bear specimens of D. glohosa. 
5. Draba sphaerula Macbride & Pay son, n. sp. 
Densely pulvinate-cespitose perennial; caudex much branched: 
leaves about 2 mm. long, densely clustered on the ends of the caudex 
branches into small, compactly imbricated spheres, glabrous except 
for the unbranched marginal ciliae, broadly linear, acute, midvein 
obscure: scapes barely rising above the leaves, pubescent: sepals 
pubescent, yellowish; petals yellow, exceeding the sepals but little: 
fruiting inflorescence corymbose: pods few (i or 2), broadly lanceolate, 
about 3 mm. long, flattened, pubescent with stellate or branched 
pubescence; style evident, less than i mm. long: seeds neither winged 
nor margined. 
D. sphaerula is quite closely related to D. glohosa and further col- 
lections may even show the two to merge. It differs from glohosa 
in the pubescent instead of the glabrous pods, the smaller, more 
densely imbricated leaves and the shorter scape. That the very short 
scapes are not due to ecological factors was evident when the type 
of sphaerula was collected, for it grew among the tufts of D. Nelsonii 
in which the scapes were much elongated. 
Collected on an alpine slope near Parker Mt., Custer Co., Idaho, 
July 17, 1 91 6, Machride &f Payson, no. 3336 (type in Gray Herbarium, 
duplicate in Ry. Mt. Herbarium). 
