584 Ordee 95.— GENTIAUACEiE. 



the leaves; branches opposite ; Its. ovate, acuminate-cuspidate ; 5-veined,. clasp- 

 ing and subconnate at base, the upper lanceolate ; panicle fastigiate ; ccU. segm. 

 setaceous, shorter than its short ttibe ; cor. segm. 5, elliptic. — In La. (Hale, near 

 Covington). St. 2f high. Lvs. 2' long. Pis. smaller than any here noticed, 

 about 1" broad, white. 



9 S. angul^ris Ph. St. quadrangular, with wmged angles ; lvs. ovate, amv^iemomili 

 5-veined; panicle corymbous; ped. elongated; sep. lance-linear, half as long as 

 the corolla^ distinct almost to the base ; cor. segments obovate, obtuse. — Wet 

 meadows and prairies, Can. to Car. and Ark. Stem 10 — 18' high, much branched, 

 branches opposite. Leaves closely embracing the stem, 1 — 2' by J — 1^', as long 

 as the internodes or often shorter. Flowers numerous, IJ — 14' diam., deep roae- 

 color, the star in the center greenish. Jl., Aug. (Chirfinia, L.) 



10 S. braohiata Ell. St. slender, subguadraagviar, internodes 2 — 4 times longer 

 than the leaves ; branches opposite, subereot ; lvs. linear and lance-linear, lower 

 ones ovate, all acutish, sessile ; panicle oilong ; cal. segments linear, twice longer 

 than the tube, twice shorter than the corolla; cor. S-parted, segments oblong- 

 obovate, obtuse, light purple. — Dry, grassy, prairies, la. abundant, also Tenn. and 

 Car. Stem a foot high, few or many-ilowered. Leaves 9 — 12" by 1 — 3". Flow- 

 ers 15" diam., of a delicate blush-purple, the star in the center yellow, bordered 

 with green. Jl., Aug. (S. ooncinna, 2d Edit.) 



2. ERYTHR.ffi'A, Eenealm. (Gr. ipvdpog, red.) Calyx 5, rarely 4- 

 parted, angular ; corolla funnel-form, twisted and wittering above the 

 capsule, tube cylindric, limb 5 — 4-parted ; sta. 5 — 4, inserted near the 

 top of the tube ; anth. exserted, spirally twisted ; sty. 1 ; stig. bilamellate 

 or capitate; caps. 2-valved, 1 or partly 2-celled. — (J) St. subangular. 

 Lvs. connate at base. Fls. cymous, roseate, white or yellow. 



1 B. Mnblenbergii Griseb. St. simple below, dichotomously branched- above; 

 lvs. ovate-long, obtusish; cymes hose, diclwtOTrums; fls. pedicellate; cor. tube a 

 little hnger than the calyx, segments oblong-lanceolate, acutish. — ^N. Y., Penn. 

 Very rare. St. 3 to 8' high, 1 to 3 times forked. Lvs. 4 to 1" by 1 to 3", dosely 

 sessile. Fls. lateral and terminaJ-ceutral, the pedicels in the forks near \' long, 

 the others shorter. Cor. bright purple, tube yellowish green, slender. Jl. — Sept 

 (E. pulcheEa Hook. Exaum pulchella Ph. ?) 



2 B. spic^ta Pers. St. dichotomously branched, erect ; lvs. clasping and slightly 

 deourrent, lower ones oval, obtuse, upper lanceolate, aoute-; fls. sessile, mostly 

 lateral on fhelong tranches ; sep. linear, acute, erect; cor. tube slender,, contracted 

 at the neck, lobes spreading, obtuse ; anth. linear-oblong, finally twisting out- 

 wards. — ® Coast of Maryland (Pickering). Sandy margins of the seashore, 

 Nantucket (Oakes). "Whole plant very smooth and intensely bitter, 6 to 12' high. 

 Lvs. 1' long, fleshy, pale green. Cor. 8" long, rose or nearly white. (B. Pioker- 

 ingii Oakes.) § Eur. 



3 E. Centaurium Pers. Erect, branched above ; lvs. oblong, acutish at each end ; 

 fls. subsessile in the loosely corymbed cymes; cor. tube twice longer than tlie calyx, 

 lobes short,- oval, obtuse, erect-spreading. — Fields, Oswego, N. T. and Can. St 

 5 to 10' high. Lvs. 1' and less in length, half as wide, 3-veined. Fls. 6" long, 

 rose-color, its yellow anthers exserted, and soon twisted. Aug. § Eur. 



3. GENTIA^NA Tourn. (To Gentius, king of Illyria, who discovered 

 the tonic virtues of this genus.) Calyx 5 to 4-parted or cleft ; corolla 

 marescent, tubular at base, limb 4 to 5-parted, segments either spread- 

 ing, erect or convergent, often furnished with intermediate, plicate 

 appendages ; stamens 5 to 4, inserted in the corolla tube ; stigmas 2, 

 revolute or erect ; styles short or ; capsule 2-valved, 1-celIed, many- 

 seeded. — Herbs of various habit. Lvs. opposite. Fls. terminal or 

 cymous. 



§ Corolla destitute of folded appendages— nnd tlio segmenta entire...- Nos. W, 1 



— and the segments fringed. No6. 2, X 



S Corolla -with folded, often toothed appendages between the labes. (tt) 



