488 ONAGRACEAE. [Von. II. 
Q. ANOGRA Spach, Ann. Sci. Nat. (II.) 4: 164. 1835. 
Low annual or perennial caulescent herbs. Stems often clothed with a papery bark. 
Leaves alternate, entire or usually pinnatifid. Buds drooping; flowers perfect, white or pink, 
usually axillary, diurnal. Calyx-tube elongated, gradually enlarged upward; calyx-segments 
narrow, finally reflexed, the tips free or united in the bud. Stamens 8, equal in length; 
filaments filiform; anthers linear. Ovary elongated, 4-celled; united styles filiform; stigma 
deeply 4-cleft; ovules numerous, in 1 row, ascending. Capsules elongated, spreading or 
ascending, 4-angled, loculicidal. Seeds ascending, in 1 row, terete. [Anagram of Onagra.] 
About Io species, chiefly in southern North America. 
Tips of the calyx-segments not free in the bud. 1. A. albicaulis. 
Tips of the calyx-segments free in the bud. 
Throat of the calyx-tube villous within. 2. A. coronopifolia. 
Throat of the calyx-tube glabrous within. 3. A. pallida. 
1. Anogra albicaulis (Pursh) Britton. Prairie Evening-Primrose. 
(Fig. 2584.) 
OEnothera albicaulis Pursh, Fl. Am. Sept. 
733- 1814. Not Nutt. 1818. 
i a pinnatifida Nutt. Gen. 1: 245. 
1818. 
Anogra albicaulis Britton, Mem. Torr. Club, 
5: 234. 1894. 
Diffusely branched at the base; branches 
decumbent or ascending, more or less hir- 
sutely pubescent or puberulent, whitish 
and often shreddy, 4/-12’long. Basal and 
lower leaves petioled, the upper sessile, 
oblanceolate or lanceolate in outline, 
deeply pinnatifid or the lowest repand- 
dentate (rarely entire), 1/-4’ long; flowers 
axillary, diurnal, 114’-3/ broad, white, 
becoming rose-color; petals obcordate or 
emarginate; calyx-segments lanceolate, 
not free in the bud, acuminate, hirsute, 
finally reflexed, the throat naked; capsule 
linear, 1/-114’ long, about 1/’ thick, hir- 
sute or puberulent; seeds finely pitted. 
Prairies, Nebraska and Dakota to New 
Mexico and Sonora. April-June. 
2. Anogra coronopifolia (T. & G.) Brit- 
ton. Cut-leaved Evening-Primrose. 
(Fig. 2585.) 
OEnothera coronopifolia T. & G. Fl. N. A. 1:495. 1840. 
Anogra coronopifolia Britton, Mem. Torr, Club, 5: 
234. 1894. 
Erect, branched, 6’—2° high, more or less hispid, 
pubescent or canescent. Leaves lanceolate or ob- 
lanceolate in outline, sessile or the lowest petioled, 
6/’-2’ long, usually finely and deeply pinnatifid 
into linear-oblong lobes; flowers axillary, white, 
turning pink, 9’’-15’” broad; calyx-segments linear, 
the tips free in the bud, reflexed, the throat villous 
within; petals broadly obovate; capsule oblong, 
abruptly constricted at the top, straight, pubes- 
cent and sometimes tuberculate, 4’’-10’’ long, about 
2/’ thick; seeds tuberculate. 
Prairies, Nebraska and Colorado to Utah, south to 
Kansas and New Mexico. June-Sept. 
