292 GENTIAN FAMILY. 



globular, with many smooth and shining seeds. Flowers racomed on a stont scape .' 

 one or more long petioles sheathing Its base, and bearing 8 oval or oblong leaflets. 

 T. LIMNANTHEMUM. Calyx and corolla 5-parted ; the oval divisions of the latter with 

 a yellowish crest at their base, and in our species otherwise naked. Style short or 

 none. Pod several-seeded. Water-plants, bearing the flowers in an umbel on the 

 long slender petiole of the floating, round-heart-shaped leaves. 



2. SABBATIA, AMERICAN CENTAURY. (Z. Sabbati, an Italian 

 botanist.) Chiefly in sandy and low or wet grounds, along the coast 

 (with one or two exceptions); flowers white or pink, usually handsome, 

 in summer, g) @ 



* Mowers white, 5-parted, numerous in cymes or corymbs, seldom over 



$' broad. 



S. paniculata, Pursh. Stem l°-2° high, with 4 sharp wing-like 

 angles ; leaves linear or oblong, mostly 1-nerved ; lobes of the corolla 

 little longer than the narrow-linear calyx lobes. Va., S. 



S. lanceolata. Torr. & Gray. Taller, larger-flowered, wjth lance- 

 ovate, 3-nerved leaves, or the upper ones lanceolate and distant, acute ; 

 lobes of corolla much exceeding the thread-shaped calyx lobes. N. J., S. 



S. macrophylla, Hook. Glaucous, with terete stem, 2°-3° high; 

 lance-ovate 3-5-nerved leaves thickish, and lobes of' smaller corolla very 

 much exceeding the bristle-like calyx lobes. Ga., S. 



* # Flowers rose-pink, rarely white, with yellowish or greenish eye, 5- 

 parted, in panicled clusters, V or more broad. In rather dry ground, 

 much branched above, l°-3° high. 



S. brachiata, Ell. Stem slightly angled ; leaves linear or narrow- 

 oblong ; flowers few, only 1' broad. Ind., W. and S. . 



S. angularis, Pursh. Wing-like angles to the stem, ovate or heart- 

 shaped, 5-nerved leaves, and corolla 1£' broad. Ontario, W. and S. 



* * * Flowers rose-purple or white, 5S-parted, V or less broad, scattered 

 singly on long peduncles ; stems slender, 5'-20' high, commonly forking, 

 scarcely angled. All grow in salt marshes or near the coast. 



S. calyc&sa, Pursh. Leaves oblong, pale, narrowed at base ; calyx 

 lobes lance-spatulate, longer than the mostly white corolla. Va., S. 



S. stellaris, Pursh. Has lance-oblong leaves or the upper linear, and 

 linear calyx lobes shorter than the rose-purple yellowish eyed corolla. 

 Mass., S. 



S. gracilis, Salisb. Very slender, with linear, or almost thread-like 

 leaves, thread-shaped calyx lobes as long as corolla ; otherwise like pre- 

 ceding. Mass., S. 



* # * * Flowers bright rose-color or with white varieties, 7-12-parted, 

 very handsome, li'-2' broad; stems simple or sparingly branched, 1°- 

 2° high. 



S. chloroldes, Pursh. Along sandy ponds, from Mass., S.; leaves 

 lanceolate ; peduncles 1-flowered, slender ; calyx lobes linear. 



S. gentianoldea, Ell. Stem leaves linear ; flowers short-peduncled or 

 sessile, clustered. Wet barrens, Ga., S. 



2. FRASERA, AMERICAN CALUMBA. {John Fraser, who col- 

 lected in this country a century ago.) 



F. Carolinensis, Walt. Rich wooded ground N. Y. to Wis., and S.; 

 root very large and deep, bitter (used in medicine as a substitute for 



