GENTIANACEH. (GENTIAN FAMILY.) 353 
l. SABBATIA, Adans. AMERICAN CENTAURY. 
Calyx 5 -12-parted. Corolla wheel-shaped, 5 — 12-parted, withering-persistent. 
Stamens 5-12, inserted on the throat of the corolla: anthers sagittate, mostly 
recurved. Style conspicuous : stigmas linear or oblong, twisted. Capsule glo- 
bose, 1-celled, 2-valved, many-seeded. — Annual or biennial branching herbs, 
with cymose or panicled white or purple showy flowers. 
* Calyx and corolla mostly 5-parted. 
+ Flowers in corymbose cymes, white, turning yellowish: branches opposite. 
1. S. lanceolata, Torr. & Gray. Stem tall, terete below, 4-angled and 
corymbosely branched above, the branches opposite; leaves ovate or roundish, 
3- 5-nerved, acute or obtuse, clasping; the upper ones distant, lanceolate, and 
very acute; cymes large, loosely many-flowered ; lobes of the corolla (often 6) 
obovate-oblong, twice as long as the filiform calyx-lobes. (S. corymbosa, Baldw.) 
— Wet pine barrens, Florida to North Carolina. July. — Stem 29-39 high. 
Leaves 1/~1}' long; the lowest minute. Corolla 10! wide, turning yellowish 
in drying. 
2. S. paniculata, Pursh. Stem virgate, wing-angled throughout, com- 
monly much branched from the base; leaves clasping, lanceolate, 3-nerved, 
mucronate, the upper and floral ones linear, the lowest tufted, oblong-obovate ; 
cymes very numerous, densely few-flowered, leafy ; lobes of the corolla obovate, 
one third longer than the linear calyx-lobes. — Low grassy meadows, Florida to 
North Carolina, August.—Stem 9/-18' high. Leaves }/-1' long. Corolla 
} wide. í 
3. S. macrophylla, Hook. Glaucous ; stem terete, corymbosely branched 
above ; the branches opposite ; leaves thick, erect, ovate-lanceolate, acute, clasp- 
ing, 3—5-nerved ; cymes large, flat-topped ; corolla small, the lobes thrice as 
long as the very short bristle-like calyx-lobes. — Wet pine barrens, Florida, and 
Westward. July and Aug. — Stem rigid, hollow, 2°-2}° high. Leaves 1}/-3/ 
long. Corolla 5” — 64 wide. 
+ + Flowers in panicled cymes, purple : branches opposite. 
4. S. angularis, Pursh. Stem square, wing-angled, erect, paniculately 
much branched, often from near the base, the branches opposite ; leaves nu- 
merous, ovate, clasping, 3- 5-nerved, often as long as the joints, the upper ones 
acute ; lobes of the corolla oblong, about twice as long as the linear calyx-lobes.— 
Low rich grounds, Florida, and northward. Aug. — Stem 19- 2? high. Leaves 
V-1} long. Corolla 1' wide. Rg 
5. S. brachiata, Ell. Stem erect, terete, paniculately branched near the 
Summit; the branches opposite, spreading ; leaves sessile, lanceolate, the upper 
ones linear, acute, the lowest clustered ; flowers in small loose peduncled cymes, 
terminating the branches, and forming an oblong or pyramidal panicle ; lobes 
of the corolla narrowly oblong, twice as long as the linear calyx-lobes.—Low _ 
_ Erounds in the middle and upper districts, and northward. July and Aug. - Stem 
2 high, Leaves 1' long. Corolla wide. = 
