350 GENTIANACE.E. (GENTIAN FAMILY.) 



* * Flowei's smaller, 4- 5-merous ; corolla someirhat 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 olwvate-spatulate, the margins minutely scabrous ; calyx- 

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

 more, with a fmhriate croirn 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. quinqueflora, Lam. Stem rather slender, branching (1-2° 

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

 3-7-nerved, tipped with 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, bnstle-pomted, without 

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

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

 Fla. — Var. occident\lis. Gray. Sometimes 2-3° high, and paniculately 

 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 salverform) with thin- 

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

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

 short pedunculate and bibracteate {except in n. 12). 



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



5. G. affinis, Griseb. Stems clustered, 1° high or less; leaA-es oblong 

 or lanceolate to lmea.T; flowers numerous and thipso'id-racemose or few or rarely 

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

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

 narrowhj funnel-form, with ovate spreading lobes, the plaits with conspicuous 

 laciniate appendages sometimes equalling the lobes. — Minn, to the Pacific. 



6. G. puberula, Michx. Stems (mostlg sol/tan/) erect or ascending 

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

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

 calgx-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. Oct. 



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



larij clusters. 



-I- Calgx-lobes and 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 ; 

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

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



