114 GENTIANACEAE. 



3. POLYPREMUM L. Annual diffuse herbs. Flowers solitary in the 

 forks of the branches and in the leaf-axils. Calyx-lobes 4 or 5, narrow. 

 Corolla -white, campanulate, shorter than the calj^x. Filaments adnate to the 

 corolla-tube for about A their length. Styles very short, permanently united. 

 Capsules obovoid or subglobose. 



1. P. procumbens L. Sterfi and branches 1-3 dm. long: leaf -blades narrowly 

 linear to subulate, scabrous-margined: calyx-lobes narrowly lanceolate, about 

 3 mm. long: corolla-lobes suborbicular, slightly shorter than the tube: capsules 

 about 2 mm. long. — Pinelands and waste places, L. keys. — [E. K.] — {Bah., 

 Cuba, Ant.) 



Family 2. GENTIANACEAE. Gentian Family. 



Annual or perennial caulescent herbs, or rarely shrubs. Leaves 

 typically opposite : blades entire, sometimes connate. Flowers perfect, 

 solitary or variously clustered. Calj^x of 2, 4 or 5, or more, partially 

 united sepals, persistent. Corolla of 4 or 5 or more, partially united 

 IDetals, varying from rotate to tubular. Androeeium of as many stamens 

 as there are corolla-lobes, the filaments partially adnate to the corolla- 

 tube. Gj'noecium of two united carpels. Fruit a capsule. 



Corolla-Iobes convolute in the bud : leafy plants, not saprophytic : stigmas distinct. 

 Corolla campanulate-funnelform : stigmas broad, capsule oblong to oval. 



1. EUSTOMA. 



Corolla rotate : stigmas narrow : capsule globose to ovoid. 2. Sabbatia. 



Corolla-lobes imbricate in the bud : nearly leafless plants, sapro- 

 phytic : stigmas united. 3. Leiphaimos. 



1. EUSTOMA Salisb. Annual relatively large herbs. Flowers solitary or 

 in open panicles. Calyx-lobes 5 or 6, narrow. Corolla white, blue, or purple, 

 campanulate-funnelform: lobes 5 or 6, usually erose-denticulate, longer than 

 the tube. 



1. E. exaltatum (L.) Griseb. Stem 1-9 dm. tall: blades of the upper leaves 

 oblong to oblong-lanceolate, 1.5-7 cm. long: calyx-lobes 10-12 mm. long: 

 corolla mainly blue; lobes oblong or oval, 17-20 mm. long: capsules 2-2.5 cm. 

 long. — Pinelands and sandy places, L. keys. — [E. K.] — {Bali.. Cuba, Ant.) 



2. SABBATIA L. Annual or biennial relatively slender herbs. Flowers 

 solitary or in cymes. Calyx-lobes 4-12, narrow. Corolla white, or of the pale 

 tints, often with a distinct eye, rotate: lobes entire, longer than the tube. — 

 Marsh-pink. 



1. S. campanulata (L.) Torr. Stem 1-4 dm. tall: blades of the upper 

 leaves narrow, but typically broader than the diameter of the stem or branches: 

 calyx with filiform or nearly filiform lobes, typically about as long as the 

 corolla: corolla deep-rose or magenta, with a yellow eye; lobes oblong to 

 spatulate-oblong: capsules 6-8 mm. long. — Pinelands and sandv places, L. keys. 

 — [E. K.]—{Bah., Cuba.) 



3. LEIPHAIMOS Sehlecht. & Cham. Annual or perennial humus plants. 

 Leaves mere scales. Flowers solitary or in cymes. Calyx-lobes 4 or 5, nar- 

 row, commonly about as long as the tube. Corolla white or variously colored, 

 salverform : lobes 4 or 5, much shorter than the tube. 



1. L. parasitica Sehlecht. & Cham. Plant pale, 1-4 dm. tall: leaves (scales) 

 opposite, 3-5 mm. long: calyx-lobes lanceolate, acute: corolla white or pink, 

 6-8 mm. long, about twice as long as the calyx ; lobes triangular to lanceolate : 



