172 PEXTANDRIA. DIGYNIA. 



Leaves opposite, entire, flowers axillary or terminal, 

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

 often intense.) — Seeds subelliptic compressed, surrounded 

 with an alated mai'gin 



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

 hispid! Generally in open marshes. (Near the Falls of 

 Schuylkill in the vicinity of Philadelphia ) 2. Pneumonun- 

 the. o. Snponaria. 4. ochroleuca. Stem smooth, and te- 

 rete; leaves smooth; flowers terminal, segments of the 

 corolla acute; interior plait confluent, with a single tooth. 



5. Catesbai. Stem terete, minutely pubescent and some- 

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

 gin scabrous; flowers terminal, fasciculate; corolla 5- 

 cleft, campanulate, somewhat ventricose, segments sub- 

 acute, interior plaits lacerately toothed. — Nearly allied to 

 G. Saponaria, and also to G. linearis. Flowers paleish blue, 

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

 perennial, Flowering time, September to December, 

 II Aa. in open grassy swamps in North and South Carolina. 

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

 ibiirths of an inch w'lde.^^Gentiojia Catesbxi? Walter. 



6. a/6f/. Muhl.Catal. Flowers white. 7- linearis. 8. ama' 

 relhic/es. From New York to Kentucky, and in Louisiana. 

 Flowers pale obscure blue. Root annual. 



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

 su])amplcxicaule, 3-nerved, ovate, acute; flowers mostly 

 solitary, axillary and terminal, upon longish pedur^cles; 

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

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

 acute, orifice ciliate. Obs. Stem about a foot high; 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 the plains of the Mis- 

 souri, near Fort Mandan. Flowering time August and 

 September It appears to be somewhat allied to G. cam' 

 pestrisy but slender, and much smaller flowered, it may 

 be G. acuta of Michaux. 



Itt. angustifolia. Stem mostly simple, sometimes 2 or 

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

 cleft; segments ovate acute, interior plaits lacerate; cap- 

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

 siderably allied to G. pneiivmianthe. Perennial; stem 6 

 to 12 inciics, slender; flower blue, often 2 inches long; 

 stipe of the capsule nt-ar an inch and a half 



The genus GeTiiiana, consisting of near 60 species, is 

 confined principally to the alpine regions of northern Eu- 



