C40 GEXTIAXACE.B. ((JENTI.W KAMII-Y.) 



the oliloiig <ir olKiViite ohtuse 8])rc'a<liiig white Inhcs of the corolhi; Aiit'sors 

 oblong ; i-apsuh' roumlish. — I)am|i jtiiic hairciis near the coiu*t. Feb. - Ajtril. 

 2. B. tenella, Muhl. Stem (f/- lU' liigh) branched; tlie I)ranclie8, like 

 the leaves, oj)|iosite or alternate, inany-tiowered ; calyx lol)es subulate, as long 

 as the tube of tlie greenish white corolla; loi)es of the corolla erect, acute; 

 antliers glotiose ; ca]isule oblong-lanceolate. — Swamps. Sept. -Oct. — Flow- 

 ers much smaller than iu No. 1. 



5. VOYRIA, Anbl. 



Calyx 5-cleft. Corolla .«alver-form. Stamens included: anthers erect. 

 Style persistent: stigma capitate. Capsule 2-celle(l. 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, (iriseb. Stem simple; scales opposite; cymes few- 

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

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

 high. Corolla 3" -4" long. 



6. OBOLARIA, L. 



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

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

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

 low .sparingly branched perennial herb, with oi)posite wedgo-obovate leaves, 

 and single or clustered axillary and terminal purplish flowers. 



1. O. Virginica, L — Kich shady -woods in the upper di.stricts. March - 

 April. — riant sniootli, pnrjdish, 3' -8' high. Branches generally 3-flowered. 



7. FRASERA, Walt. American Colimbo. 



Calvx 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, Vwrne on the margins of the valves. — Tall smooth perennial herbs, 

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

 yellow flowers, disposed in a large terminal panicle. 



1. F. Carolinensis, xValt. Stem (.3°- 8° high) erect; leaves and 

 branches mostly four in a whorl, lance-oblong, the lowest spatulate: panicle 

 pyramidal ; corolla lolies oI)long, mucronate, dotted with purple, — Kich soil 

 in the upper di.stricts. July. — Lowest leaves 1° long. Corolla 1' wide. 

 Koot large. 



8. LIMNANTHEMUM, Gmcl. 



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

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

 none: stigma 2-lobed. persistent. Capsule l-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. 



