VOL. II.] 



GENTIAN FAMILY. 



6l 3 



1. G. ventricosa. 



2. G. crinila. 



3. G. delonsa. 



4. G. acuta. 



5. G. propinqua. 



6. G. quinquefolia. 



?f Corolla without plaits or teeth in the sinuses. 

 Corolla-lobes fringed or serrate; flowers i'~3' long. 



Corolla enclosed in the swollen wing-angled calyx. 

 Corolla conspicuously longer than the wingless calyx. 



Corolla-lobes fringed all around their summits; leaves lanceolate. 

 Corolla-lobes fringed mainly on the margins; leaves linear. 

 Corolla-lobes with entire or rarely denticulate margins; flowers 6"-i2" long. 

 Corolla-lobes fimbriate-crested at the base, acute. 

 Corolla : lobes naked, subulate-acuminate. 



Calyx-lobes unequal; flowers mostly 4-parted. 

 Calyx-lobes equal; flowers 5-parted. 



^. Jf Corolla with membranous toothed or lobed plaits in the sinuses. 

 Margins of leaves and calyx-lobes scabrous or ciliate; seeds winged. 

 Anthers separate, or merely connivent. 



Stems usually clustered ; calyx-lobes unequal; corolla narrowly funnelform. 7. G. affinis. 

 Stems mostly solitary; calyx-lobes equal; corolla campanulate-funnelform. 8. G.puberula. 

 Anthers cohering in a ring or short tube. 



Corolla-lobes distinct, longer than or equalling the plaits. 



Flowers 1-4; corolla campanulate-funnelform, its lobes 2-3 times as long as the plaits. 



9. G. Elliotlii. 

 Flowers several or numerous; corolla club-shaped, its lobes not much longer than the 



plaits. 10. G. Saponaria. 



Corolla-lobes none or minute, the plaits very broad. n. G. Andrewsii. 



Margins of leaves and calyx-lobes smooth or nearly so. 



Flowers clustered, sessile, 2-bracteolate under the calyx. 



Corolla-lobes ovate, twice as long as the plaits; leaves broad, acuminate; seeds winged. 



12. G. flavida. 

 Corolla-lobes rounded, little longer than the plaits; leaves narrow; seeds winged. 



13. G. linearis. 

 Corolla-lobes ovate, acute, much longer than the broad plaits; leaves broad; seeds winged. 



14. G. rubricaulis. 

 Corolla-lobes triangular-lanceolate; leaves obovate; seeds wingless. 15. G. villosa. 



Flowers solitary, peduncled, not bracteolate; leaves linear. 16. G. Porphyrio. 



*^ 



i. Gentiana ventricosa Griseb. Swollen 

 Gentian. (Fig. 2866.) 



Gentiana ventricosa Griseb. in Hook. Fl. For. Am. 2: 65. 



pi. 152. 1834. 



Annual; stem strict, terete, branched above, about 

 i high. Basal leaves obovate, small, those of the 

 stem ovate-oblong, obtuse or acute at the apex, rounded 

 or subcordate at the base, \ f long, 4 // -6 // wide; flowers 

 few, solitary at the ends of stout peduncles, 4-parted; 

 calyx inflated, ovoid, about 9" high, 4"-5' / thick, 

 wing-angled, enclosing the corolla; corolla-lobes ob- 

 long, obtuse, lacerate-serrate; ovary elliptic-oblong. 



Grand Rapids of Saskatchewan, between Cumberland 

 House and Hudson Bay (Drummond). Not recently 

 collected. 



2. Gentiana crinita Froel. Fringed 

 Gentian. (Fig. 2867.) 



Genliana crinita Froel. Gen. 112. 1796. 



Annual; stem leafy, usually branched, i-3 

 high, the branches erect, somewhat 4-angled. 

 Basal and lower leaves obovate, obtuse, the 

 upper lanceolate or oblong-lanceolate, \'-2 f 

 long, acute or acuminate at the apex, sessile 

 by a rounded or subcordate base; flowers 

 mostly 4-parted, several or numerous, about 

 2' high, solitary at the ends of the usu- 

 ally elongated peduncles; calyx-lobes lan- 

 ceolate, acuminate, their midribs decurrent 

 on the angles of the tube; corolla bright blue, 

 rarely white, narrowly campanulate, its lobes 

 obovate, rounded, conspicuously fringed all 

 around their summits, scarcely fringed on the 

 sides, spreading when mature; capsule spindle-shaped, stipitate; seeds scaly-hispid. 



In moist woods and meadows, Quebec to Minnesota, south to Georgia and Iowa. Sept. -Oct. 



