ONAGUACE^E. (EVENLN'G-FKIMKOSE FAMILY.) 131 



Seeds naked. — Leaves alternate. (Name from vivos, wine, and Oijpa, a chase: 

 the application uncertain.) 



§ 1. Annuals or biennials : Jloicers nocturnal, odorous, withering the next (lay: juaIs 



cylindrical , closely sessile. 



1. QE. biennis, L. (Common- Evening-Primrose.; Erect, mostly 

 hairy ; leaves ovate-lanceolate, acute, obscurely toothed ; flowers in a terminal 

 rather leafy spike ; calyx-tube much prolonged ; jietais inversely heart-shaped 

 (light yellow); pods oblong, semewliat tapering above. — Varies greatly; as 

 Var. 1. muuic.vta, with rough-bristly stem ami pods, and petals rather longer 

 than the stamens. Var. 2. grandiflora, with larger and more showy petals. 

 Var. 3. varviflora, with petals about the length of the stamens. Var \. 

 CRUCI.\ta, with singularly small and narrow linear-oblong petals, shorter than 

 the stamens, and smooth pods. — Common cven - wherc. June -Sept. 



2. <E. rhomlripetala, Nutt. Petals rhombic-ovate, acute; calyx-tube 

 very slender; pods short, cylindrical: otherwise resembling a smoothish and 

 narrow-leaved state of No. 1. — Wisconsin, Illinois, aud southwest ward. 



3. <E. sinnata, L. Hairy, low, ascending, or at length procumbent; 



leaves oblong or lanceolate, sinuate-toothed, often pinnatifid, the lower petioled ; 

 flowers (small) axillary; petals not longer than the stamens (pale yellow, rose- 

 color in fading); pods cylindrical, elongated, — Sandy fields, New Jersey and 

 southward, principally a dwarf state. June. 



$2. Biennials or perennials: /lowers diurnal {opening in sunshine), yellow: pods 

 club-shaped, with 4 strong or winged angles and 4 intermediate ribs. 



4. <E. Itlaaira, Michx. Very glabrous, glaucous; bar or ovate- 

 lanceolate; pods obovoid-oblong, 4-vringed, almost sessile. U — Mountains of 

 Virginia, Kentucky, and southward. May-July. — Leaves broader and flow- 

 ers larger than in the next. 



5. CE. frilticosa, L. (SuNDROr-S.) Hairy or nearly smooth; 

 lanceolate or oblong ; raceme corymbed, naked below; petals broadly obcordate, 

 longer than the calyx-lobes and stamens; pods oblong-club-shaped, 4-vringed, longer 

 than the pedicels. 1J. — Open places, from New York southward and westward. 

 June- Aug. — Plant l°-3° high, with several varieties. Corolla li' broad. 



6. OG. vipai'ia, Nutt. Scarcely pubescent; leaves linear-lanceolate, elon- 

 yated, tapering below and somewhat stalked ; flowers (large) in a rather leafy at 

 length elongated raceme; petals slightly obcordate ; pods oblong-club-shaped, slm- 

 der-pedicell<d, scarcely i-winged. @ — River-banks and swamps ; Quaker Bridge, 



New Jersey, to Virginia and southward. 



7. <E. linearis, Michx. Slender, minutely hoary-pubescent ; leaves 

 linear; flowers (rather huge) somewhat corymbed at the end of the branches, 

 pods obovate, hoary, scarcely i-winged at the summit, tapering into a slender pedicel. 

 — Monrauk Point, Long Island, to Virginia and southward. June. — Plant 1° 

 high, bushy-branched : flowers 1' wide. 



8. <E. clirysantlia, Michx. Slender, smooth or pubescent; leaves lan- 

 ceolate, rather blunt ; flowers crowded or at first corymbed ; petals obovate, notched 

 at the end (orange-yellow), longer than the stamens ; pods all pedicel/ed, oblong chtb- 



