GENTIANACE^E. (GENTIAN FAMILY.) 355 



2. EUSTOMA, Don. 



Calyx bell-shaped, 4 - 5-parted, sharply 4 - 5-angled ; the lobes subulate, 

 keeled. Corolla tubular, 4 - 5-lobed, membranaceous at the base, withering- 

 persistent ; the lobes erect, lanceolate-oblong, acute. Stamens 4-5, partly 

 cxserted, inserted on the middle of the tube of the corolla : anthers sagittate, 

 introrse, opening lengthwise. Style conspicuous, erect, persistent : stigmas 

 round-ovate, thick, at length spreading, with the margins revolute. Capsule 

 oblong, obtuse, 1 -celled, the margins of the valves slightly inflexed. Placentae 

 spongy, sutural. Seeds minute, globose, sessile. Herbs, with oblong glaucous 

 clasping leaves, and panicled showy purple or blue flowers. 



1. E. exaltatum, Griseb. Stem (2 -3 high) terete, glaucous, panicu- 

 lately forking above ; leaves mucronate, decurrent at the base, the upper ones 

 lanceolate ; flowers long-peduncled, terminating the branches, blue ; calyx-lobes 

 as long as the tube of the corolla, dilated and membranaceous at the base. 

 South Florida. Corolla 12" - 15" long. 



3. GENTIANA, Tourn. GENTIAN. 



Calyx 4 - 5-parted. Corolla bell-shaped or funnel-shaped, 4 - 5-lobed, often 

 with plaited toothed appendages between the lobes. Stamens 4-5. Stigmas 

 2, sessile, compressed, persistent. Capsule 1-celled, 2-valved, many-seeded; the 

 seeds sutural, or covering the inner face of the valves. Flowers showy, solitary 

 or clustered, axillary and terminal. 



* Annual: corolla funnd-shaped, destitute of appendages : anthers versatile : capsule 



sessile: seeds wingless. 



1. G. quinqueflora, Lam. Stem 4-angled, slender, branching; leaves 

 ovate or ovate-lanceolate, acute, cordate and slightly clasping at the base, 

 3 - 5-nerved ; flowers 3-5, terminating the short branches ; corolla blue, rather 

 slender, naked in the throat ; with ovate bristle-pointed entire lobes, much 

 longer than the subulate calyx-lobes. Dry soil along the mountains, Georgia, 

 and northward. Aug. and Sept. Stem l-2 high. Leaves 1' long. Co- 

 rolla 1' long. 



2. G. crinita, Frcel. Stem terete below, the upper portion and branches 

 4-angled ; leaves lanceolate, acute, closely sessile, the lowest narrowed into a 

 petiole ; flowers terminal, on long angular peduncles ; calyx-lobes 4, ovate- 

 lanceolate, acute, strongly keeled, as long as the tube of the corolla ; lobes of 

 the corolla 4, rounded, fimbriate, nearly as long as the tube ; seeds scaly. 

 Damp soil along the mountains, Georgia, and northward. Oct. and Nov. 

 Stem l-2 high, often much branched. Leaves l'-2' long. Corolla blue, 

 1^'- 2' long. 



* * Perennial: corolla bell-shaped, with plaited toothed appendages between the lobes : 



anthers erect, mostly connivent: capsule pedicelled: seeds commonly winged. 



3. G. OChroleuca, Frcel. Stem low, smoothish ; leaves oblong or obo- 

 vate-oblong, narrowed at the base, the upper ones narrower and acute ; flowers 

 in a dense mostly terminal cluster ; corolla open, yellowish-white, - longer 



