732 FLORA. 



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. 



1. Gentiana ventricosa Griseb. SWOLLEN GENTIAN. (I. F. f. 2866.) 

 Stem terete, about 3 dm. high. Basal leaves obovate, small, those of the stem 

 ovate-oblong, rounded or subcordate at the base, 2-5 cm. long; flowers few, soli- 

 tary at the ends of stout peduncles, 4-parted; calyx inflated, ovoid, about 2 cm. 

 high; corolla-lobes oblong, obtuse; ovary elliptic-oblong. Grand Rapids of Sas- 

 katchewan, between Cumberland House and Hudson Bay. 



2. Gentiana crinita Froel. FRINGED GENTIAN. (I. F. f. 2867.) Stem 

 3-10 dm. high, the branches erect. Basal and lower leaves obovate, obtuse, the 

 upper lanceolate or oblong-lanceolate, 2-5 cm. long, acute or acuminate at the 

 apex, sessile with a rounded or subcordate base; flowers mostly 4-parted, about 

 5 cm. high, solitary at the ends of the usually elongated peduncles; calyx-lobes 

 lanceolate, acuminate; corolla bright blue, rarely white, narrowly campanulate, 

 its lobes obovate; capsule spindle-shaped, stipitate; seeds scaly-hispid. In moist 

 woods and meadows, Quebec to Minn., Ga. and Iowa. Sept. -Oct. 



3. Gentiana detonsa Rottb. SMALLER FRINGED GENTIAN. (I. F. f. 2868.) 

 Similar to the preceding, but smaller; stem 0.7-4.5 dm. high. Basal and lower 

 leaves spatulate, obtuse, the upper linear or linear-lanceolate, 2.5-6 cm. long; 

 flowers 1-6, mostly 4-parted, about 3.5 cm. high; calyx-lobes lanceolate, acumi- 

 nate; corolla narrowly campanulate, its lobes spatulate-oblong. In wet places, 

 Newf. to Alaska, Anticosti, N. Y., Minn., S. Dak., in the Rocky Mts. to Ariz., 

 and in the Sierra Nevada. Also in northern Europe and Asia. July-Sept. 



4. Gentiana acuta Michx. NORTHERN GENTIAN. (I. F. f. 2869.) Stem 

 1.5-5 dm- high. Basal and lower leaves spatulate or obovate, obtuse, the upper 

 lanceolate, acuminate or acute at the apex, rounded or subcordate at the base, 

 sessile, 1-5 cm. long; flowers racemose-spicate, 1-1.6 cm. high; calyx-lobes lance- 

 olate; corolla tubular-campanulate, blue, its lobes lanceolate, acute; capsule sessile. 

 In moist or wet places, Lab. to Alaska, Quebec, Minn., south in the Rocky Mts. to 

 Ariz, and Mex. Also in Europe and Asia. Summer. 



5. Gentiana propinqua Richards. FOUR-PARTED GENTIAN. (I. F. f. 

 2870.) Stems slender, usually branched from the base, 5-18 cm. high. Basal 

 leaves spatulate, obtuse, the upper distant, oblong, or lanceolate, 1-4 cm. long, 

 rounded at the slightly clasping base; flowers 1.5-2 cm. high; calyx 4- cleft, 2 of 

 the lobes oblong, the others linear-lanceolate; corolla blue or bluish, its lobes ovate- 

 lanceolate; capsule linear. Lab. to Alaska and Br. Col. Summer. 



6. Gentiana quinquefolia L. STIFF GENTIAN. AGUE-WEED. (I. F. f. 

 2871.) Stem ridged, 0.5-5 dm. hig n > quadrangular. Basal leaves spatulate. 

 obtuse, those of the stem ovate, acute, clasping or rounded at the base. 3~7-nerved, 

 1-5 cm. long; flowers in clusters of 1-7 at the ends of the branches, or also axil- 

 lary; calyx one-fourth to one- third the length of the corolla; coralla tubular-funnel- 

 form, blue, its lobes triangular, entire; capsule stipitate; seeds globose, wingless. 

 In dry or moist soil, Me. and Ont. to Mich., Fla. and Mo. Aug. -Oct. 



Gentiana quinquefblia occident&lis (A. Gray) A. S. Hitchcock. Usually taller; 

 corolla more broadly funnelform; calyx-lobes foliaceous, reaching to the middle of the 

 corolla. Ohio to Minn., Tenn. and La. 



7. Gentiana affinis Griseb. OBLONG-LEAVED GENTIAN. (I. F. f. 2872.) 

 Stems clustered from deep roots, minutely puberulent, simple, 1.5-4.5 dm. high. 

 Leaves linear-oblong to lanceolate oblong, firm, indistinctly nerved. 1-4 cm. long, 

 the floral smaller; flowers 5 -parted, sessile in the axils of the upper leaves, about 

 2.5 cm. high, not bracted under the calyx; calyx-lobes linear or subulate, unequal; 

 corolla blue, its lobes ovate, acute or mucronate, entire, spreading, with laciniate 



