U5.\oTHEn.i. LV. ONAGRACEiE. '2G3 



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 Artie Am., W. to Oregon. Stem I — 

 2f high, very branching. Leaves mostly alternate, 1 — 3' long, I as wide, en- 

 tire, < r with a lew minute teeth. Flowers numerou.?, axillary. Petals rose- 

 color. Capsules 1 — 2' long, on short pedicels. Aug. 



/?. albijlurum. Lehm. (£. lineare. Muld.) St. slender, at first simple, 

 branched at top ; Ivs. linear, entire, margin revolute ; capsuks canescent. 



4. E. MOLLE. Torr, (E. strictum. MuM.) Soji Epilobium. 



Plant clothed with a dense, soft, velvet-like pubescence; st. terete, straight, 

 erect, branching above ; Ivs. opposite (alternate above), crowded, sessile, mostly 

 entire and oblong-linear, obtu.sish; pet. deeply emarginate, twice longer than 

 the calyx: s/i>, large, turbinate; <:«;;•;. elongated, subsessile. — ® Swamps, Mass. 

 to N. J., rare. Stem 1 — 2f' high. Leaves numerous, 8 — 15" by 1 — 4". Flow- 

 ers rose-color. Capsules 3' long. SejU. 



5. E. ALPiNUM. Alpine Epilobium. 



S/. creeping at base, usually with 2 pubescent lines, few-flowered; Ivs. 

 opposite, oblong-ovate, subentire, obtuse, sessile or subpetiolate, smooth ; stig. 

 undivided ; caps, mostly pedicellate. — Mountains, Northern States to Artie Am. 

 Stem 6 — 12' high. Leaves oiten slightly petiolate and denticulate, lower ob- 

 tuse, middle acute, and upper acuminate. Flowers smaller than in E. moUe, 

 reddish-white. 

 p. natans. Hornem. — St. large, nodding at the suirtmit; Ivs. oblong, denticulate. 



2. CENOTHERA. 



Gr. otvos, wine, S-J/po), 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 allarnate leaves. 



1. CE. BIENNIS. Common Evening Primrose. Svabish. (Fig. 45.) 



St. erect, hirsute; Ivs. ovate-lanceolate, repand-denticulate ; Jls. sessile, in 

 a terminal, leafy spike; calyx tube 2 or 3 times longer than the ovary; sta. 

 shorter than petals ; caps, ohiong, obtuselv 4-angled. — ® and (g) Common in 

 fields and waste places, U. S. and British Am. Stem mostly simple, 2 — 5f 

 high, with whitish, scattered hairs. Leaves 3 — G' by * — U', 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. 



0. murlca'.a. (CE. muricata. PA.) St. muricate or strigosely hirsute, red; 

 pet. scarcely longer than the staniens. Stem 1 — 2f high. 



y. grandijlora. (CE. grandifiora. Ait.) Pet. much longer than the stamens, 

 rather deeply obcordate. >Stem branched, f 



2. ffi. FRUTicosA. Perennial Evening Primrose. 



St. pubescent or hirsute ; Ivs. oblong-lanceolate, repand-denticulate ; rac. 

 leafy, or naked below, corvmbed ; caps, oblong-clav^ate, 4-angled, pedicellate. 

 —% 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, U' diam. in a terminal, bracteate, mostly pedunculate raceme. Calyx 

 tube longer' than the ovary. Petals broad-obcordate, yellow. Jn. — Aug. 

 /?. ambigua. Lvs. membranaceous ; pet. longer than broad. 



3. CE. PUMiLA (& GE. pusillal Mkhx.) Divarf Evening Pnmrose. 

 Low, pubescent ; i,'. ascending ; lvs. lanceolate, entire, obtuse, attenuate 



at base; spike loose, leafy, naked below; calyx tube shorter than the subsessile, 

 oblong-clavate, angular "ovary. — (f) A smalh half-erect plant, common in grass 

 lands. Can. to S. Car. Stem G — lO' long, round, slender, simple. Leaves 1 — 

 li' by 2—3", radical ones spatulate, petiolate. Flowers yellow, 6" diam., open- 

 ing in succession 1 or 2 at a lime. Jn. — Aug. 



