150 ONAGKACE^. (etening-primrose family.) 



Suborder I. ONAGRACEiE proper. 



1. EPIIiOBIITBI, L. "WiLLOW-HEKB. 



Calyx-tube not prolonged beyond the ovary ; limb 4-cleft, deciduous. Petals 

 4. Stamens 8 : anthers short. Pod linear, many-seeded. Seeds with a tuft of 

 long hairs at the end. — Perennials, with nearly sessile leaves, and violet, purple, 

 or white flowers. (Name composed of em Xo|3o0 'ov, viz. a violet on apod.) 



* Flowei's large in a long spilce or raceme : petals widely spreading, on claws : sta- 



mens and style turned to one side : stigma with 4 long lobes : leaves scattered. 



1. E. angrustirolium, L. Gbeat Willow-hekb.) Stem simple, 

 tall (4° -7°); leaves lanceolate. — Low grounds, especially in newly cleared 

 land; common northward. July. — Flowers pink-purple, very showy. (Eu.) 



# * Flovxrs small, cort/mbed or paruded: petals, stamens, and style erect: stigma 



dub-shaped: lower leaves opposite, entire Oi' denticulate. 



2. E. alplnum, L. Low (2' -6' high); nearly glabrous; stems ascending 

 from a stoloniferous base, simple; leaves elliptical or ovate-oblong, obtuse, 

 nearly entire, on short petioles ; flowers few or solitary, drooping in the bud ; 

 petals purple ; pods long, glabrous. — Alpine summits of the White Mountains 

 of New Hampshire, and Adirondack Mountains, New York. (Eu.) 



Var. m&jus, "Wahl. Taller ; upper leaves more or less acute and toothed ; 

 pod glabrous or somewhat pubescent. (E. alsinifolium, Vill. E. origanifoli- 

 um, Lam.) — AVith the typical form. (Eu.) 



3. E. palustre, L., var. liiieiire. Erect and slender (I°-20high), 

 branched above, minutely hoary-pubescent ; stem roundish ; leaves narrowly-lanceo- 

 late or linear, nearly entire ; flower-buds somewhat nodding ; petals purplish or 

 white ; pods hoary. (E. lineare, ilf«7i/. E. squamatum, iVuft.) — Bogs, N.Eng- 

 land to Penn., Wisconsin, and northward. There is also a small and simple 

 1 -few-flowered form (4'-9' high), less hoai-y or nearly glabrous, with shorter 

 leaves (E. oligSnthum, Michx.), found in N. New York, White Mountains of 

 New Hampshire and northward. This is E. nutans, Sommerf. & E. lincare. Fries, 

 but the pods are usually a little hoary. (Eu.) 



4. E. mdile, Torr. Soft-downy all over, strictly erect (1°-2J° high), at 

 length branching ; leaves crowded ; linear-oblong or lanceolate, blunt, mostly peti- 

 oled ; petals rose-color, notched (2" -3" long). — Bogs, Rhode Island and Penn. 

 to Michigan, and northward. Sept. 



5. E. COlorfttum, Muhl. Glabrous or nearly so; stem roundish, not 

 angled, much branched (1°- 3° high), many-flowered; leaves lanceolate or ovate- 

 oblong, acute, denticulate, ojlen petioled, not at all decurrent, thin, usually pui-ple- 

 veined; flower-buds erect ; petals purplish, 2-cleft at the summit (li"-2" long). 

 — Wet places ; common. July - Sept. 



2. CENOTHERA, L. Evening Pkimbose. 



Calyx-tube prolonged beyond the ovary, deciduous; the lobes 4, reflexed. 

 Petals 4. Stamens 8 : anthers mostly linear. Pod 4-valved, many-seeded. 



