140 
OENOTHERA serrulata. 
Serrulated-leaved Evening Primrose. 
OCTANDRIA MONOGYNIA.— Nat. Ord. ONAGRARIJE. 
Gen. Char.-— Ca/j/x quadrifidus, tubulosus. Petala quatuor. Capsula qua- 
drilocularis, quadrivalvis, cylindrica, infera. Semina nuda. — W. 
(Enothera serrulata ; foliis linearibus spinuloso-serratis acutis, floribus 
axillaribus solitariis, calycis foliolis carinatis, stigmate quadrilobo, 
capsula cylindracea. 
CE. serrulata, Nuttall's Gen. Amer. PI v. i. p. 246.— Nutt. in Journ. 
Acad. Nat. Sc. Phil. v. iii. p. 120. 
« A low, perennial, sufFruticose plant," (Nutt.) Stejn and branches slender, 
terete, reddish, scarcely pubescent. Leaves alternate, 3 or more inches 
long, linear, tapering at the base, and acuminated at the point, glabrous, 
single-nerved, spinuloso-serrate. 
Flowers solitary, of a moderate size ; measuring about an inch and a half in 
diameter when fully expanded. Cali/x funnel-shaped, yellowish, with 
4 acute, at length reflexed, ovate, deeply carinated, lobes. At the base 
of these lobes, within, and forming, as it were, a continuation of the up- 
per part of the funnel-shaped portion of the calyx, are the 4> roundish, 
bright yellow, remarkably crumpled and rather spreading petals. Sta^ 
mens 8, alternately shorter, with very short filaments, and linear-oblong 
yellow Anthers. Germen inferior, linear, obtusely 4-angled, green, slight- 
ly pubescent, %/e much shorter than the corolla. Sligma peltate, 
deep brown, 4-lobed. 
Discovered by Mr Nuttall on the summits of hills, in 
the plains of the Missouri, and of the Red River, and first cul- 
tivated in the garden of the University of Pennsylvania, whence 
seeds were kindly communicated to our garden by Mr MuR- 
RAY. We have kept it in a pot in the open air, occasionally 
giving it the shelter of a frame. 
VOL. II. 
