1905] NELSON—ROCKY MOUNTAIN PLANTS 61 
Following are specimens illustrating: Jones, 5548, Manti, Utah; Nelson, 
4691, Granger, Wyo.; Cusick, 2515, Malheur-River, Oregon; Trelease, 4435, 
Shoshone, Idaho; Nelson, 4707, Green River, Wyo.; Godding, Milford, Utah. 
15a. S. TORTUM Eastwoodae, n. var.—Leafy throughout, the 
leaves oblong-linear: flowers very small: capsule tapering into a 
slender beak, spirally coiled at base. ; 
This is probably a good species. Only one specimen is before me: Alice 
Eastwood, Grand Junction, Colo., May, 1892. 
16. 5. ToRTUOSUM A. Nels., Proc. Biolog. Soc. 17:95. 1904; 
Oenothera gauraeflora caput-medusae Lévl., Monog. Oenothera, 226. 
—LEVEILLE’s plate shows only a single branch from Lemmon’s 
specimens. 
17. S. UTAHENSE Small, Bull. Torr. Bot. Club 23 :191.—Whitened 
with a tomentose pubescence, branching from the base upward, 
15°™ or more high (the plants in hand are all young): leaves ovate, 
obovate, or oblanceolate, 2-4°™ long, generally tapering to a short 
petiole: flowers crowded in terminal somewhat corymbose racemes, 
white; calyx-tube longer than the lanceolate lobes; petals obovate, 
5™™ long, longer than the stamens but surpassed by the pistil: cap- 
sule linear, less than 2°™ long, more or less contorted. _ 
The specimens before me were collected by L. N. Goodding at Milford, Utah. 
As the original description calls for yellow flowers I thought at first Goodding’s 
specimens were another species, but agreeing in most other respects I am going 
to assume that “flowers yellow” was a clerical error. 
18. S. Bootam (Dougl.) Small, Bull. Torr. Bot. Club 23:191; 
Oenothera Boothii Dougl., Lehm. in Hook. Fl. Bot. Am. 1:213.— 
Seemingly seldom collected. ‘Typical specimens by L. F. Henderson, 
Shoshone Falls, Idaho, July, 1897. Many of the specimens referred 
to this species Belong to the next. 
19. S. Lemmoni, n. sp.—Branched from the base up, 2-3°™ high, 
stem and branches rather stout, crinkled-hirsute; branches divari- 
cate-ascending: leaves rather large, variable in size, 2-5°™ long, 
oblong or broader, mostly acute at apex, lower tapering into petioles, 
hirsute-ciliate especially beneath: flowers in a crowded terminal 
short-hirsute raceme, lengthening into a bracteate fruiting spike; 
calyx tube but slightly enlarged upward, scarcely as long as its 
narrowly lanceolate lobes; petals broadly obvate or suborbicular, 
