172 PEXTANDKIA. DIGTNIA. 



Leaves opposite, entire, flowers axillary or terminal, 

 solitary, fasciculate, or verticillate; (colour mostly blue, 

 often intense.) — Seeds subelliptic compressed, surrounded 

 with an alated mari^in. 



Species. 1. G. crinita. Seed subcylindric, brownish, 

 hispid! Generally in open marshes, (kear the Falls of 

 Schuylkill in the' vicinity of Philadelphia ) 2. Pneumonav.' 

 the. 3. Saponaria. 4. ochroleuca. Stem smooth, and te- 

 rete; leaves smooth; flowers terminal, segments of the 

 corolla acute; interior plait contlueitt, with a single tootii. 



5. Catesbcei. Stem terete, miMutely pubescent and some- 

 what scabrous; leaves short, elliptic-ovate, acute, mar- 

 g'in scabrous; flowers terminal, fasciculate; corolla 5- 

 cleft, campanulate, somewhat ventrlcose, segments sub- 

 acute, interior plaits lacerately toothed. — Nearly allied to 

 G. Sapoiiaria, and also to G. lijiearis. Flowers paleisliblue, 

 open; leaves closely sessile, aiTounded at the base. Root 

 perennial. Flowering time, September to December. 

 Hab. in open grassy swamps in North and South Carolina. 

 8 to 10 inches high Leaves about an incli long, and three 

 fourths of an inch wide. — Geiitiana Catesbcei? Walter. 



6. aZ6a. Muhl.Catal. Flowers white. 7-lineaHs. 8. ama- 

 relloides. From New York to Kentucky, and in Louisiana. 

 Flowers pale obscure blue. Root annual. 



9. acvta? Annual: stem quadrangular, branched; leaves 

 subamplexicaule, 3-nerved, ovate, acute; flowers mostly 

 solitary, axillary and terminal, upon longish peduncles; 

 calix nearly divided to the base, 2 of the segments smaller; 

 corolla campanulate, 4 and 5-cleft, segments semi-ovate, 

 acute, orifice ciliate. Obs. Stem about a foot higli; pe- 

 duncles often an inch long; calix 4-cleft, unequal, 2 of 

 the segments oblong-ovate, often nearly twice the size of 

 the others; corolla cylindric, campanulate, rarely expand- 

 ing, greenish-purple; beard of each segment about 5 fila- 

 ments; anthers unconnected; intermediate plaits none. 

 Hab. In depressed situations, on tlie plains of the Mis- 

 souri, near Fort Isiandan. Flowering time August and 

 September, It appears to be somev/hat allied to G. cam,' 

 pestris, but slender, and much smaller flowered, it may 

 be G. acuta of Michaux. 



10. angusvJUia. Stem mostly simple, sometimes 2 or 

 3-flowered; leaves linear, spreading, smooth; corolla 5- 

 cleft; se.ij^ments ovate acute, interior plaits lacerate; cap- 

 sule clavate, upon a very long stipe. — Obs. A species con- 

 siderably allied to G. pn&xuv.onanthe. Perennial; stem 6 

 to 12 mches, slender; flower blue, often 2 mches long;' 

 stipe of the capsule near an inch and a half. 



The genus Gentiana, consisting of near 60 species, is 

 confined pi-incipaliy to the alpine regions of northern Eu- 



