122 BOTANY. 

 OENOTHERA ALBICAULIS, Nlltt. Utah. 



Var. runcinata, Engelin.— Glabrous or canescently pubescent, much 

 branched, often from the decumbent base ; leaves sessile, or nearly so, 

 narrowly lanceolate, sometimes entire, but more frequently runcinately 

 pinnatifid in their whole length. — Arizona, Dr. Oscar Loew. 



CEnothera coronopifolia, T. & G. — Twin Lakes, Colorado, at 9,500 

 feet altitude (12G). 



Oenothera rosea, Ait.— Slender, branching from the base, sparingly 

 puberulent ; leaves lanceolate, tapering rather gradually to the apex, attenu- 

 ated into a petiole J' long, entire or repandly denticulate; capsule ovate, 

 4-angled and 4-ribbed, 3-6" long ; calyx-tube 4" long, longer than the 

 lobes; petals bright rose color, equal to or somewhat shorter than the calyx- 

 tube ; seeds nearly smooth. — Cienega (near Tucson), Ariz. (5G3). 



CEnothera c^espitosa, Nutt. — Acaulescent, or with a very short stem, 

 about 5' high, more or less hirsute, especially on the margins and principal 

 veins of the leaves ; leaves broadly lanceolate, 2-8' long, attenuate into a 

 long petiole, rather acute, irregularly and sometimes deeply sinuate-toothed ; 

 calyx-tube 2-5' long, tips of the lobes united in the bud; capsules oblong, 

 over an inch in length, strongly ribbed ; "seeds in 2 rows in each cell, oval- 

 oblong, not angled, very minutely and densely tubercled upon the back 

 with thin flattened processes and with a narrow, longitudinal furrow on 

 the ventral side."— South Park, Colorado, at 9,900 feet altitude (132). 



CEnothera triloba, Nutt. — Calyx-tube 2-7' long ; tips of the lobes 

 free ; petals obovate, £—2' long (the specimens giving so unusual a size 

 of flower were from Willow Spring, Arizona) ; capsule 4-toothed, at the apex 

 broadly 4- winged; seeds 1-1 £" long, angled, obscurely but densely tuber- 

 culate. — Willow Spring, Arizona (239) ; Denver and Twin Lakes, Colo- 

 rado (123). 



CEnothera Nuttallii, T. & G. 



CEnothera heterantha, Nutt. — Utah. 



CEnothera Hartwegi, Benth. — Suffruticose, usually about a foot high, 

 branched (especially above) ; bark frequently shedding, as in (E. Californica, 

 pubescent, though sometimes glabrous ; leaves lanceolate, entire or irregu- 

 larly repandly denticulate, somewhat ciliate, 8"-l£' long; calyx-tube variable, 



