350 GENTIANACE.E. (GENTIAN FAMILY.) 



* * Flowers smaller, 4- 5-merous ; corolla somewhat funnel-form or salver-form, 



its lobes entire : peduncles short or none, terminal and lateral on the acute- 

 angled stem. 



3. G. Amarella, L. Stems 2 - 20' high ; leaves lanceolate to narrowly 

 oblong, or the lowest obovate-spatulate, the margins minutely scabrous ; calyx- 

 lobes (4 - 5) foliaceous, lanceolate or linear ; corolla mostly blue, ' long or 

 more, with a Jimbriate crown at the base of the oblong acute lobes ; capsule sessile. 

 Var. acuta, Hook. f. Calyx almost 5-parted ; crown usually of fewer and 

 sometimes very few setae. Lab. to N. Vt. and N. Minn., west and northward. 



4. G. quinquefldra, Lam. Stem rather slender, branching (1-2 

 high) ; leaves ovate-lanceolate from a partly clasping and heart-shaped base, 



3- 7-nerved, tipped witli a minute point ; branches racemed or panicled, about 

 5-flowered at the summit; lobes of the small 5-cleft calyx awl-shaped-linear; 

 corolla pale blue, 6-9" long, its lobes triangular-ovate, bristle-pointed, without 

 crown, but the glands at the base of the slender obcouical tube manifest ; capsule 

 stipitate. Moist hills, Maine to Ont., 111., and south along the mountains to 

 Fla. Var. OCCIDENTALS, Gray. Sometimes 2-3 high, and pauiculately 

 much-branched ; calyx-lobes more leaf-like, linear-lanceolate, reaching to the 

 middle of the broader funnel-form corolla. Va. and Ohio to Minn., south to 

 Tenn. and La. 



2. PNEUMONANTHE. Corolla (funnel -form or salrer-form) with thin- 

 niembranaceous toothed or lobed plaits in the sinuses; no crown nor glands ; 

 capsule stipitate ; autumn-flowering perennials, the flowers large, sessile or 

 short pedunculate and bibracleate (except in n. 12). 



* Anthers unconnected or soon separate; leaves rough-margined; seeds winged. 



5. G. affinis, Griseb. Stems clustered, 1 high or less ; leaves oblong 

 or lanceolate to linear -flowers numerous and thyrsoid-racemose or few or rarelv 

 almost solitary ; calyx-lobes unequal, the longest rarely equalling the tube, the 

 shortest sometimes minute; corolla (blue or bluish) 1' long or less, rather 

 narrow};/ funnel-form, with ovate spreading lobes, the plaits with conspicuous 

 laciniate appendages sometimes equal/ing the lobes. Minn, to the Pacific. 



6. G. puberula, Michx. Stems (mostly solitary) erect or ascending 

 (8-16' high), mostly rough and minutely pubescent above ; leares rigid, linear- 

 lanceolate to oblong-lanceolate (1-2' long); floicers clustered; rarely solitary; 

 cal/jx-lobes lanceolate, much shorter than the bell funnel-form open bright-blue 

 corolla, the spreading ovate lobes of which are twice or thrice the length of the 

 cut-toothed appendages. Dry prairies and barrens, western N. Y., Ohio, and 

 Ky., to Minn, and Kan. (Jet. 



* * Anthers cohering in a ring or short tube , flowers in terminal and often axil- 



lary clusters. 



4- Calyx-lobes arid bracts ciliolate-scabrous ; seeds conspicuously winged; leaves 



rough-margined. 



7. G. Saponaria, L. (SOAPWORT G.) Stem erect or ascending, smooth ; 

 leaves ovate-lanceolate, oblong, or lanceolate-obovate, narrowed at the base , 

 calyx-lobes linear or spatulate, acute, equalling or exceeding the tube, half the 

 length of the corolla; lobes of the club-bell-shapcd light-blue corolla obtuse, 



