130 ONAURACE.E. (EVENING-PRIMROSE FAMILY.) 



SuiJORDER I. OMGBACEjE TROPER. 



I. EPIL6bIIJIII, L. Willow-herb. 



Calyx-tube not prolonged beyond the ovary ; limb 4-clcft, 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 «Vi Xo/3o£i iW, viz. a violet on a pod.) 



* Flowers large in a long spike or raceme: petals widely spreading, on claws: sta- 



nuns and styL turned to one side : stigma with 4 long lobes: leaves scattered. 



1. E. an&irtassifdBitsiiB, L. Great Willow-herb.) Stem simple, 

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

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



* * Flowers small, cori/mbed or panicled: petals, stamens, and style erect: stigma 



club-shapi d: lowt r hares opposite, entire or denticulate, 



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

 from a stoloniferous base, simple j 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. itiajiis, Wahl. Taller; upper leaves more or less acute and toothed ; 

 pod glabrous or somewhat pubescent. (E. alsinifolium, 17//. E. origanifoli- 

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



3. E. paiiisti'C, L., var. liueai'C. Erect and slender (l°-2° high), 



branched above, minutely hoary-jiulnsruit '; stem roundish; leaves narrowly-lancto- 

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

 white; pods hoary. (E. lineare, Maid. E. squamatum, Nutt.) — Bogs, N. Eng- 

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

 1 -few-flowered form (4' -9' high), less hoary or nearly glabrous, with Bhorter 

 leaves (E. oliganthum, MicJix.), found in N. New York, White Mountains of 

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

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



4. E. molle, Torr. Soft-downy all over, 6trictly erect (1°- 2£° high), at 

 length branching; leaves croivded ; linear-oblong or lanceolate, blunt, mostly pcti- 

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

 to Michigan, and northward. Sept. 



5. E. coloi'utiiiu, Muhl. Glabrous or nearly so; stem roundish, not 

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

 oblong, acute, denticulate, often petioled, not at all decurrent, thin, usually purple- 

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

 —Wet places ; common. July -Sept. See addend. 



2. OENOTHERA, L. Evening Primrose. 



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

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



