340 GENT1ANACE.E. (GENTIAN FAMILY.) 



the obloug or obovate obtuse spreading white lobes of the corolla ; anthers 

 oblong; capsule roundish. Damp pine barrens near the coast. Feb -April. 



2. B. tenella, Muhl. Stem (6' -12' high) branched; the branches, like 

 the leaves, opposite or alternate, many-flowered ; calyx lobes subulate, as long 

 as the tube of the greenish white corolla; lobes of the corolla erect, acute; 

 anthers globose ; capsule oblong-lanceolate. Swamps. Sept. - Oct. Flow- 

 ers much smaller than in No. 1. 



5. VOYRIA, Aubl. 



( 'alyx 5-cleft. Corolla salver-form. Stamens included : anthers erect. 

 Style persistent : stigma capitate. Capsule 2-celled. Seeds on the margin 

 of the introflexed valves, usually tailed at each end. Colorless herbs, grow- 

 ing on rotten wood. Leaves scale like. Flowers terminal. 



1. V. Mexicana, Griseb. Stem simple; scales opposite; cymes few- 

 flowered ; calyx lobes lanceolate, acute ; corolla small, the lobes shorter than 

 the tube; seeds tailed. Keys of South Florida (Curtiss). Stem 4' -6' 

 high. Corolla 3" -4" long. 



6. OBOLARIA, L. 



Calyx of 2 spatulate bract-like sepals. Corolla bell-shaped, 4-cleft, imbri- 

 cated in the bud. Stamens 4 : anthers round-cordate. Style short : stigma 

 2-lipped. Capsule ovoid, 1-celled. Seeds numerous, covering the valves. A 

 low sparingly branched perennial herb, with opposite wedge-obovate leaves, 

 and single or clustered axillary and terminal purplish flowers. 



1. O. Virginica, L Rich shady woods in the upper districts. March - 

 April. Plant smooth, purplish, 3' - 8' high. Branches generally 3-flowered. 



7. FRASERA, Walt. AMERICAN COLUMBO. 



Calyx 4-parted. Corolla wheel-shaped, 4-parted, the lobes each with a de- 

 pressed fringed gland on the upper face. Stamens 4 : anthers nodding. 

 Style persistent : stigmas spreading. Capsule compressed. Seeds few, large, 

 winged, borne on the margins of the valves. Tall smooth perennial herbs, 

 with whorled or opposite sessile leaves and branches, and cyrnes of greenish 

 yellow flowers, disposed in a large terminal panicle. 



1. P. Carolinensis, Walt. Stem (3-8 high) erect; leaves and 

 branches mostly four in a whorl, lance-oblong, the lowest spatulate; panirle 

 pyramidal; corolla lobes oblong, mucronate, dotted with purple. Rich soil 

 in the upper districts. July. Lowest leaves 1 long. Corolla 1' wide. 

 Hoot large. 



8. LIMNANTHEMTJM, Gmel. 



Calyx 5-parted. Corolla wheel-shaped, 5-parted, the lobes infolded in the 

 bud, ciliate, and glandular-crested at the base. Stamens 5. Style short or 

 none: stigma 2-lobed, persistent. Capsule 1-celled, opening irregularly. 

 Seeds few or many. Testa woody. Perennial aquatic herbs, with floating 

 circular or cordate spongy leaves, and white peduncled flowers clustered near 

 the summit of the long petiole. 



