CENOTHERA. LV. ONAGRACEZ. 263 
ticulate, smooth, attenuate at base, rather acute, lower ones opposite ; pet. small, 
obcordate, twice longer than calyx; sty. included; stig. clavate; caps. pubes- 
cent.—In swamps and marshes, Penn. to Artic Am., W. to Oregon. Stem 1— 
2f high, very branching. Leaves mostly alternate, 1—3/ long, ; as wide, en- 
tire, or with a few minute teeth. Flowers numerous, axillary. Petals rose- 
color. Capsules 1—2’ long, on short pedicels.. Aug. 
B. albifiorwm. Lehm. (E. lineare. MuAl.) St. slender, at first simple, 
branched at top; dvs. linear, entire, margin revolute; capsules canescent. 
4. E. mouue. Torr. Ae strictum. Muhl.) Soft Epilobium. 
Plant clothed with a dense, soft, velvet-like pubescence; st. terete, straight, 
erect, branching above ; lvs. opposite (alternate above), crowded, sessile, mostly 
entire and oblong-linear, obtusish; pet. deeply emarginate, twice longer than 
the calyx; stig. large, turbinate ; caps. elongated, subsessile-—@) Swamps, Mass. 
to N. J., rare. Stem 1—2fhigh. Leaves numerous, 8—15" by 1—4”. Flow- 
ers rose-color. Capsules 3/ long. Sept. 
5. E. aupinum. Alpine Epilobiwm. 
St. creeping at base, usually with 2 pubescent lines, few-flowered; ls. 
opposite, oblong-ovate, subentire, obtuse, sessile or subpetiolate, smooth; stig. 
undivided ; caps. mostly pedicellate-—Mountains, Northern States to Artic Am. 
Stem 6—12’ high. Leaves often slightly petiolate and denticulate, lower ob- 
tuse, middle acute, and upper acuminate. Flowers smaller than in E. molle, 
reddish-white. 
8. natans. Hornem.—‘Szt. large, nodding at the summit; lvs. oblong, denticulate. 
2. ENOTHERA. 
Gr. olvos, wine, Sew, to hunt; the root is said to cause a thirst for wine. 
Calyx tube prolonged beyond the ovary, deciduous, segments 4, 
reflexed; petals 4, equal, obcordate or obovate, inserted into the top 
of the tube; stamens 8; capsule 4-celled, 4-valved ; stigma 4-lobed ; 
seeds many, naked.— Herbs with alternate leaves. 
#4. Ce. BIeENNIs. Common Evening Primrose. Scabish. (Fig. 45.) 
' St. erect, hirsute; lvs. ovate-lanceolate, repand-denticulate; fls. sessile, in 
a terminal, leafy spike; calyx tube 2 or 3 times longer than the ovary; sta. 
shorter than petals; caps. oblong, obtusely 4-angled.—@) and @) Common in 
fields and waste places, U. S. and British Am. Stem mostly simple, 2—5f 
high, with whitish, scattered hairs. Leaves 3—6’ by 4—13’, roughly pubes- 
cent, slightly toothed, sessile on the stem, radical ones tapering into a petiole. 
Flowers numerous, opening by night and continuing but a single day. Petals 
large, roundish, obcordate. Seeds very numerous, 2 rows in each cell. Jn.—Aug. 
B. muricata. (G4. muricata. Ph.) St. muricate or strigosely hirsute, red; 
pet. scarcely longer than the stamens. Stem 1—2f high. 
y. grandiflora. (QE. grandiflora. Ait.) Pet. much longer than the stamens, 
rather deeply obcordate. Stem branched. + . 
2. CE. rruTicGsa: Perennial Evening Primrose. 
St. pubescent or hirsute; vs. oblong-lanceolate, repand-denticulate ; rac. 
leafy, or naked below, corymbed; caps. oblong-clavate, 4-angled, pedicellate. 
—1 In sterile soils, Mass., Ct., N.Y. to Flor. and Western States. Stem hard, 
rigid, (not shrubby) branched, purple, 1—3f high. Leaves variable in pubes- 
cence, form and size., 1—3’ by 3—8”, sessile, minutely punctate. Flowers few 
or many, 13’diam. in a terminal, bracteate, mostly pedunculate raceme. Calyx 
tube longer than the ovary. Petals broad-obcordate, yellow. Jn—Aug. 
B. ambigua. Lvs. membranaceous; pet. longer than broad. 
3. Gs. pumina (& CE. pusilla? Miche.) Dwarf Evening Primrose. 
Low, pubescent ; st. ascending ; lvs. lanceolate, entire. obtuse, attenuate 
at base; spike loose, leafy, naked below; calyx tube shorter than the subsessile, 
oblong-clavate, angular ovary—@) A small, half-erect plant, common in grass 
lands, Can. to 8. Car. Stem 6—10’ long, round, slender, simple. Leaves 1— 
13’ by 2—3”, radical ones spatulate, petiolate. Flowers yellow, 6’ diam., open- 
ing in succession 1 or 2atatime. Jn.—Aug. 
fo] 
~ 
