GENTIAN ACE AE. 331 



2. EUSTOMA Salisb. Parad. Lond. pi. 34. 1806. 



Glabrous, often glaucous, annual herbs, -with opposite, sessile or clasping, 

 entire leaves. Flowers large, blue, purple or -vvliite, long-peduncled. Calyx 

 deeply 5-6-eleft, the lobes lanceolate, acuminate, keeled. CoroUa deeply 5-6- 

 lobed, the lobes oblong or obovate, convolute in the bud. Stamens 5-6, inserted 

 on the throat of the corolla; filaments filiform; anthers oblong, versatile. 

 Ovary 1-celled; stigma 2-lamellate. Capsule 2-valved. Seeds small, numerous, 

 foveolate. [Greek^ open-mouth, referring to the corolla.] Four or five species, 

 natives of the southern United States, Mexico and the West Indies. Type 

 species: Eustoma silenifoUum Salisb. 



1. Eustoma exaltatum (L.) Griseb. Fl. Br. W. I. 422. 1861. 



Gentiana exaltata L. Sp. PI. ed. 2, 331. 1762. 



Erect, slightly fleshy, 1-9 dm. high, large plants often much-branched and 

 many-flowered, small plants simple and 1-flowered. Leaves oblong or oblong- 

 lanceolate, somewhat clasping, sessile, 1.5-9 cm. long, the lower obtuse, the 

 upper acute; calyx-lobes nearly filiform-acuminate, 1-2 cm. long; corolla blue 

 or nearly white, sometimes light blue above and dark blue below within, 2-4 cm. 

 broad, its lobes obovate, irregularly dentate; style about twice as long as the 

 stigma-lobes; capsule olDlong, obtuse, 2-2.5 cm. long. 



Brackish borders of marshes and savannas. North Bimini, Andros, New Provi- 

 dence, Great Exuma. Long Island, Cat Island and Acklin's : — Florida to Texas, 

 Mexico and south to northern South America ; Cuba ; Hispaniola ; Jamaica. Marsh 

 Gentian. 



3. SABBATIA Adans. Fam. PI. 2: 503. 1763. 



Annual or biennial erect glabrous herbs, with opposite or sometimes verti- 

 cillate, sessile or rarely petioled or clasping leaves, and terminal pink rose or 

 white flowers. Calyx 4-12-parted or -divided, the tube campanulate, sometimes 

 very short, the lobes or segments usually narrow. Corolla rotate, deeply 4-12- 

 parted. Stamens 4-12, inserted on the short tube of the corolla; filaments fili- 

 form short; anthers curved, revolute or coiled in anthesis. Ovary 1-celled, the 

 placentae intruded; style 2-cleft or 2-parted, its lobes filiform, stigmatic along 

 their inner sides. Capsule 2-valved, many-seeded. Seeds small, reticulated. 

 [In honor of L. Sabbati, an Italian botanist.] About 18 species, natives of 

 eastern North America, Mexico and the West Indies. Type species: Gentiana 

 dodecandra L. 



Corolla 2-3 cm. wide, rose-pink; stigmas oblong-linear. 1. S. campnnnlata. 



Corolla less than 2 cm. wide, pure white; stigmas spatulate. 2. S. simulata. 



1. Sabbatia campanulata (L.) Torrey, Fl. U. S. 1: 217. 1824. 



Chironia campanulata L. Sp. PI. 190. 1753. 

 Sahhatia gracilis Salisb. Parad. Lond. pi. 32. 1806. 



Stem 3-6 dm. high. Leaves linear or linear-lanceolate, 2-4 cm. long, 

 sessile, acute or the lowest much shorter, obtuse, oblong or oblanceolate, the 

 uppermost almost filiform; flowers pink with a yellow eye, about 2.5 em. broad, 

 mostly 5-parted; calyx-lobes filiform-linear, equalling the oblong-obovate 

 corolla-segments, or somewhat shorter; stigmas oblong-linear; capsule obovoid, 

 about 5 mm. high. 



Brackish marshes, Abaco and Great Bahama : — Eastern Massachusetts to 

 Florida and Louisiana : — Cuba. Slender Marsh Bink. 



