EPILOBIACEAE 841 
broadest above the middle on the lower part of the stem, 5-10 cm. long, sessile and 
rounded at the base or the lower narrowed into petioles, acuminate at the apex, remotely 
denticulate : sepals closely strigose: petals rhombic-obovate, 2-3 cm. long: capsules 
columnar, curved, 12-16 mm. long, closely pubescent: seeds obovoid, tuberculate at 
the top. 
On prairies, Minnesota to Indiana, Nebraska and the Indian Territory. Spring and summer. 
9. ANOGRA Spach. 
Caulescent annual or perennial herbs, often with a papery bark. Stems often some- 
what woody. Leaves alternate: blades usually pinnatifid. Buds drooping. Flowers 
usually axillary, diurnal. Hypanthium elongated. Sepals narrow. Corolla white or 
pink. Ovary slender. Ovules numerous, in 1 row in each cavity, ascending. Capsules 
elongated, spreading or ascending, loculicidal. Seeds terete. EVENING PRIMROSE. 
Sepals without free tips in the bud. 1. A. albicaulis. 
Sepals with free tips in the bud. : 
Hypanthium villous in the throat. 2. As sie alae 
Hypanthium glabrous in the throat. 3. A. Nuttallir. 
1. Anogra albicaülis (Pursh) Britton. Stems diffusely branched, the branches 
decumbent or ascending, 1-3 dm. long, more or less hirsute or puberulent, with whitish and 
often shreddy bark: leaves alternate; blades oblanceolate or lanceolate, deeply pinnatifid 
or the lower ones repand-dentate (rarely entire), 2.5-10 cm. long: sepals lanceolate, acu- 
minate, hirsute, the tips not free in the bud: corolla 3.5-7.5 cm. broad, white, becoming 
rose-color: capsules linear-cylindric, 2.5-3.5 cm. long: seeds finely pitted. [Oenothera 
albicaulis Pursh. ] 
On prairies, North Dakota and Nebraska to Mexico. Spring and summer. 
2. Anogra coronopifólia (T. & G.) Britton. Stems erect or nearly so, branched, 
1.5-6 dm. tall, more or less hispid or canescent: leaf-blades lanceolate or oblanceolate in 
outline, 1.2-5 cm. long, usually finely and deeply pinnatifid into linear-oblong lobes: 
sepals linear: corolla white, turning pink, 1.8-3 em. broad: capsules oblong, abruptly 
constricted at the top, straight, 8-20 mm. long, about 4 mm. thick: seeds tuberculate. 
[ Oenothera coronopifolia T. & G. ] 
On prairies, South Dakota to Utah, Texas and New Mexico. Spring to fall. 
3. Anogra Nuttállii (Sweet) Rydb. Stems erect, 1.5-12 dm. tall, white or pale, 
rarely with scattered hairs, the bark often shreddy: leaf-blades linear or oblong-linear, 
2.5-8.5 cm. long, entire, repand or somewhat pinnatifid : sepals linear: corolla white, 
turning pink, 2.5-3.5 cm. broad: capsules linear, curved, 2.5-5 cm. long, about 3 mm. 
thick: seeds smooth. [Oenothera Nuttallii Sweet]. 
On prairies, Minnesota to Idaho and Texas. Spring and summer. 
10. KNEIFFIA Spach. 
Annual or perennial caulescent often shrubby herbs. Leaves alternate: blades 
mostly narrow, entire or shallowly toothed. Buds erect. Flowers diurnal, in ter- 
minal spikes or racemes. Sepals narrow. Corolla yellow. Ovary usually club-shaped, 
4-angled. Ovules numerous, on slender stalks, in many rows. Capsule club-shaped, or 
oblong by the wings, 4-winged or rarely sharply 4-angled. Seeds not angled, without a 
tubercle. SunpRops. 
Stem-leaves linear-filiform : capsules 4-angled or 4-margined. 1. K. linifolia. 
Stem-leaves with relatively broad blades : capsules winged. 
A. Capsules paasa rm ties the body gradually narrowed into the pedicel-like 
base or essentially sessile. 
a. Petals over 15 mm. long: capsules pubescent. 
Capsule-body less than twice as long as thick. 
eaves silvery-strigose: capsules hirsute, the body stout-stalked. 2. K. arenicola. 
Leaves glabrous or minutely and inconspicuously pubescent: cap- 
C sules minutely appressed ee the body slender-stalked. 3. K. subglobosa. 
apsule-body over twice as long as thick. Á 
yof the capsule shorter than the pedicel-like base. 4. K. longipedicellata. 
Body of the capsule longer than the pedicel-like base. 
Sepals less than 1.5cm. long, the tips united in the bud or if dis- 
tinct less than 1 mm. long: ng hoor less than 4cm. wide: cap- 
sules mostly less than 1.5 cm. long. 
Capsule-bod ad slender pedicel-like base clearly defined, the 
wings thin and commonly glabrous. _ 
Capsule-body narrowed into a stout, little differentiated base, 
the wings thick and copiously pubescent. 
Sepals over 1.5 em. long, the tips distinct, 2.5-4 mm. long: corolla 
5. K. linearis. 
6. K. Spachiana. 
