(ENOTHERA 



(ENOTHERA 



2331 



Ivs. narrow-oblanceolate and acuminate, usually 

 stalked, toothed or pinnatifid: fls. often larger, fra- 

 grant, the petals lobed. Cent, and S. Calif. 



VII. SUBGENUS MEGAPTERIUM. 



St.-bearing: stigma 4-cleft; calyr-tuhe very long and 

 slender, enlarging at the top: caps, very Irroad and 

 strongly 4-ieinged: fls. yellow, showy. 



10. missouriensis, Sim.s ((E. macrocdrpa, Pursh. 

 Megapterium missouriensis, Spach). Low perennial 

 with a hard base, the ascending sts. mostly not over 1 

 ft. long, usually pubescent: Ivs. thick, varjang from 

 oval to linear to narrow-lanceolate, 5 in. or less long, 

 acuminate, narrowed to a petiole, entire or remotely 

 denticulate: petals 1-2)2 iu. long, very broad, yellow: 

 caps. 2-3 in. long and nearly as wide, broad-winged. 

 Mo. and Neb., west and south. B.M. 1592. Gn. 26, p. 

 4S0. R.H. 1857, p. 598. 



11. Havardii, Wats. Sts. numerous, short, slender 

 and simjjle or branching, rising from a branching caudex, 

 the plant canescent: Ivs. linear-lanceolate in a rosette, 

 narrowed toward either end, sinuate-pinnatifid : fls. 

 scs.sile, the buds erect, the calj'X-tube with coherent 

 tips; petals '2^1 iu. long, yellow turning red: caps, 

 oblong-ovate, 4-angled and ribbed. Texas. 



VIII. SUBGENUS KNEIFFIA. 



St.-bearing: stigma deeply 4-lobed; calyx-tube very slender, 

 somewhat dilated at the top: caps, rather small, 

 club-shaped, 4-angled or narrowly ^'W'mjed; fis. 

 yellow, diurnal. 



A. Plant more or le.ss glaxicous, glabrous. 



12. gla&ca, Michx. {Ktwlffia glaiwa, Spach). Erect 

 perennial, 2-3 ft.: Ivs. ovate to ovate-oblong, 4 in. or 

 less long, acute or somewhat obtuse, sessile, remotely 

 <lenticulate: fls. large, in short leafy clusters, the calyx- 

 tube about ?4in. long; petals an inch long, more or less 

 cmarginate: caps, oblong, broad-winged, short-stalked, 

 Va., Ky., and south. B.M. 1606. Var. Fraseri, Torr. 

 & Gray (CE. Fraseri, Pursh), is a form with ovate- 

 lanceolate often slightly petioled Ivs. Southern states. 

 B.M. 1674. 



AA. Plant not glaucoxis, usually hairy or pubescent. 

 B. Caps, smooth, or bearing slight gland-tipped hairs. 



13. £rutic6sa, Linn. {Knc^ffia fruiicosa, Raim.). 

 ScTNDROPS. Perennial (or sometimes biennial), erect 

 and more or less branchy, rather stout, 1-3 ft. high, 

 the terete usually reddish sts. somewhat villous: Ivs. 

 ovate to narrow-lanceolate, 3 in. or less long, firm, 

 usually acute, remotely denticulate or entire, mostly 

 .sessUe: fls. lJ-2-2 in. across and showy, in an elongating 

 cluster, with hnear bracts: caps, oblong to obovate, 

 short-stalked or sessile, strongly winged. Dry soil. 

 Nova Scotia, south and west. B.M. 332. — Very vari- 

 able. Var. Yofingii, Bailey (ffi. Yoimgii, Hort.), is 

 common in cult., and is prized for its stocky growih and 

 profusion of bloom. It is a strong larger-lvd. plant, with 

 firm shiny slightly glaucous foliage, and bearing many 

 bright lemon-yellow fls.: 2 ft., much branched and 

 .somewhat decumbent at b:ise. Excellent. Var. major, 

 Hort., is a strong-growing floriferous form, forming a 

 dense bush-like specimen. 



14. p&mila, Linn. (Kne\ffia piimila, Spach). Sun- 

 drops. Slender erect biennial or perennial, 1-2 ft. high, 

 simple or branched: Ivs. oblanceolate or oblong, u.su- 

 ally glabrous, entire, the radical spatulate: fls. an inch 

 or less across in a loose, leafy si)ike or raceme, the calyx- 

 tube shorter than the ovary, the petals obcordate: caps, 

 mostly clavate, short-stalked or sessile. Newfoundland, 

 south" and west. CE. Pflgrimii, Hort., apjjcars to 

 belong w ith this species. It is very like CE. fruiicosa var. 

 Yountfii horticulturally, but in establisheil plants it is 

 apparently somewhat taller and more brandling, and 



the fls. not so large and color not so deep; it may be an 

 offshoot of (E. fruticosa. 



BB. Caps, grayish pubescent, the hairs glandless. 

 15. linearis, Michx. {CE . fruiicosa var. linearis, Wats. 

 Kne'iffia linearis, Spach). Sdndrops. Fig. 2567. Slen- 

 der, 12-20 in. high, biennial or perennial, pilose, puberu- 

 lent or nearly glabrous: basal Ivs. sijatulate to broad- 

 oblanceolate ; st.-lvs. linear to narrow-lanceolate: fls. 

 bright clear yellow, 1)2 in- or more across, standing 

 well above the foliage Ivs. ; petals obovate and notched 

 or emarginate at apex: cajis. mostly less broadly winged, 

 clavate. Conn., south. Gn. 26, p. 481. — In cult., this 

 is a neat .and bright little plant, blooming in July. The 

 plant known in gardens as CE. fruticosa var. pallida 

 probably belongs with this species^or with the form of it 

 sometimes separated as Knerffia Allenii, Small. 



p. 2S68. A sundrop — 

 (Enothera pratensis. 

 ( X H) 



16. pratensis, Rob. (Kne\ffia pratensis, Small). Fig. 

 2568. SuNDROPS. A day-blooming perennial, 1-3 ft. 

 high, maldng a good clump and frequently planted 

 in yards: sts. sometimes branched above, with soft- 

 spreading hairs: Ivs. oblong-lanceolate to elliptic- 

 lanceolate, hairy, entire or sinuate, acute or obtuse: 

 fls. bright yellow, Icafy-bracted, mostly clustered at 

 top of St.; tips of calyx hirsute; petals J^^-l in. long, 

 obcordate: caps, club-shaped, hispid, sessile or nearly 

 so. Maine to Iowa and Ark. — A good hardy plant for 

 early summer to midsummer bloom. 



IX. SUBGENUS HARTM.INNIA. 



St.-bearing: stigma 4-lobed; calyx-tube funnelform, often 

 very long: caps, club-shaped or obovate, inroad- 

 winged: fh. white, pink or red, diurnal. (Including 

 XylopleuTum, etc.). 

 A. Plant canescent or villous, usually erect, or at least 

 prominently ascendiiig. 



17. specidsa, Nutt. (Hartmdnnia speciosa. Small). 

 Perennial, with a rootstock, erect or ascending branches, 

 2 ft. or less high, canescent: Ivs. linear to lance-oblong, 

 4 in. or less long, remotely or sinuately dentate, or the 



