584 Oedeb 95.— GENTTANACE^. 



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

 ing and subconnate at bass, the upper lanceolate ; panicle fastigiate ; cal. segm. 

 setaceous, shorter them 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 7" broad, white. 



9 S. angul^ris Ph. St. quadrangular, with winged angles ; lvs. ovate, aimplexicaidt 

 ^■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 Arlr. 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 — li' diam., deep rose- 

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



10 S. brachi^ta Ell. St. slender, subquadrangular, internodes 2 — i times longer 

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

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

 than the tube, twice shorter than the corolla; cor. 5 -parted, segments oblong- 



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

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

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

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



2. ERYTHRjE'A, Renealm. (Gr. ipvOpog, red.) Calyx 5, rarely 4- 

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

 capsule, tube cylindric, limb 5 — 4-parted ; sta. 5 — 4, insei'ted near the 

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

 or capitate; caps. 2-valved, 1 or partly 2-celled. — ® St. subangnlar. 

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



1 E. Miihlenbergii G-riseb. St. simple below, dichotomously branched above ; 

 lvs. ovate-long, obtusish ; cymes loose, dichotomous ; fls. pedicellate ; cor. tube a 

 Utile longer than the calyx, segments oblong-lanceolate, acutish. — N. T., Penn. 

 Very rare. St. 3 to 8' high, 1 to 3 times forked. Lvs. 4 to 7'' by l^to 3", closely 

 sessile. Pla. lateral and terminal-central, the pedicels in the forks near J' long, 

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

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



2 E. spicata Pers. St. dichotomously branched, erect ; lvs. clasping and slightly 

 decurrent, lower ones oval, obtuse, upper lanceolate, acute ; fls. sessile, mosUy 

 lateral on the long branches ; sep. linear, acute, erect ; cor. tube slender, contracted 

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

 wards. — (I) 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. (E. Picker- 

 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 the calyx, 

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

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

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



3. GENTIA'NA Toum. (To Gentius, king of Illyria, who discovered 

 the tonic virtues of this genus.) Calyx 6 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-celled, many- 

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

 oymous. 



§ Corolla destitute of folded appendages — and the segments entire Nos. 10, 1 



—and the segments fringed. Nob. 3, 8 



5 Corolla with folded, often toothed appendages between the lobes, (a) 



