946 EPILOBIACEAE 
6. EPILOBIUM L. Perennial herbs or somewhat woody plants. Leaf- 
blades entire or toothed. Tdowers E vs spicate, or racemose. Sepals 4, 
northern.—Sum.—fall—-WILLOW-HERBS. COT- 
TON-WEEDS 
1. E. coloratum Muhl. Plant 3-9 dm. tall: 
leaf- blades o 5-15 cm. long: flowers 
als 
generally nodding: sepals 2.5-3.5 mm. long: 
petals 3—4 mm. long, un. notched cap- 
sule 4.5-6 cm. long.— (BRO WILLOW- 
HERB. )— Du cs and low grounds, various 
provinces, Ala. to Kans., S. D., Ont., Me. 
and S. C. 
7. OENOTHERA L. M or biennial large herbs. Leaf-blades un- 
dulate or toothed. Buds Flowers nocturnal, spicate. Sepals elongate. 
Corolla sae Capsules A om tapering. [Onagra Adans.]—About 15 spe- 
cies, mostly North American.—Sum.—EVENING-PRIMROSES.—Speeies additional 
to the ones is below have been deseribed from the northern States and some 
may occur within our range. Some species are used in ornamental gardening. 
ura Pu el 3 em. long, the free tips subulate, less than 4 mm. long: cee 
1. O. bien 
Ss pus 'er 3 em. long, the free tips filiform, over 5 mm. long: 
corolla 8-12 cm. wide. 2. O. grandiflora. 
1. O. biennis L. Stem 13-25 dm. tall, hirsute: leaf-blades elliptie to lan- 
ceolate, a. em. long, repand-denticulate: petals Bu ight-yellow, 1-2.5 cm. 
- ome 18-25 V 
e 
m. long, nu terete.—( WEEDY EVENING- 
Paricnos® -) eg -o and thickets, 
arious ires ex., Minn., and 
La ab.—Su um.— all 
randiflora Ait. ipae A O. bien- 
nis, eee larger throughout so es 3 m 
tall: petals a em. long, go ae D cap- 
ule li 
tury. rge flowered forms of Oe. biennis 
are sometimes recorded as Oe. grandiflora. 
RAIMANN Rose. Annual, biennial, or perennial herbs. Leaf- 
binds sinuate or pinnatifid. Flowers axillary, sometimes aggregated in a 
spike, nocturnal. Petals yellow. Ovary slender. Caps sule narrowly cylindric, 
or rarely slightly tapering. Seeds uctus [Oenothera L. in part.]—A bout 
20 species, American.—Several species are used in horticulture. 
