SCROPHULARIACE^. 267 



* Flowers purple. 



1. G, purpttrea Linn.: stem angular, much branched; leaves linear, 

 long, very rough ; flowers nearly sessile ; teeth of the calyx lanceolate-* 

 subulate. 



Swamps and low grounds. Can. to Car. Aug. — Oct. (T). — Stem 1 — 2 feet 

 high, much branched above, rough on the angles. Flowers large, axillary, 

 purple, pubescent. Rough-leaved Gerardia. 



2. G. tenuifolia Vahl : stem much branched, smooth ; leaves linear, 

 acute at each end, smoothish ; peduncles axillary, opposite, longer than the 

 flowers ; teeth of the calyx short, acute. G. erecta Walt. 



Fields and woods. N. Y. to Car. W. to Miss. Julf— Sept. (^.—Stejn 

 6 — 12 inches high, 4-angled, much branched. Flowers small, purple. Differs 

 from the preceding in its more slender growth, its smoother leaves, larger flow- 

 ers and longer pedvmcles. • Slender Gerardia. 



3. G. maritima Raf. : stem angular ; leaves linear, fleshy, short, rather 

 obtuse ; peduncles much shorter than the flowers ; calyx truncate, the teeth 

 short and somewhat obtuse ; corolla smooth. G. purpurea var, crassifolia 

 Pursh. 



Salt marshes. Mass. N. Y. and N. J. July— Sept. (T).—Stem 6—12 inches 

 high. Flowers middle-sized, purple, axillary and terminal. Easily distin 

 guished by its obtuse leaves and by its short calyx-teeth. 



Salt-marsh Gerardia. 



4. G. auriculata Mich. : stem subsimple, roughly hirsute ; leaves ovate- 

 lanceolate, auriculate at base, sessile, very entire ; flowers sessile. Oto- 

 phylla Michauxii D. C. 



Low grounds. West Chester and Nazareth, Penn. Darlington. S. to Car. 

 W. to HI. — Stem 12 — 15 inches high. Flowers sessile, often opposite, purple, 

 rarely white, hairy-pubescent. Auriculate Gerardia. 



** Flowers yelloio. Dasystoma. — Raf. 



5. G.flava Linn. : pubescent; stem mostly simple ; leaves lanceolate or 

 oblong-lanceolate ; the upper ones entire or sinuate-toothed, nearly sessile ; 

 the lower incised or somewhat pinnatifid, on longer petioles ; flowers ax- 

 illary, opposite, nearly sessile. 



Rocky woods. N. Y. to Flor. W. to Miss. Aug., Sept. %.—Stem 2 — ? 

 feet high. Flowers large, yellow. Pubescent False Foxglove. 



6. G. glauca Eddy : stem paniculately branched, smooth, glaucous ; 

 leaves ovate-lanceolate, petiolate, smooth, the lower ones pinnatifid ; flowers 

 on pedicels, axillary ; calyx smooth, the segments lance-hnear. G. qmr- 

 cifolia Pursh. 



Woods. N. Y. to Car. W. to Miss. Aug., Sept. 1\..~Stem 2—5 feet high. 

 Flowers large, yellow. Glaucous False Foxglove. 



7. G. Pedicularia Linn. : stem much branched, pubescent ; leaves ob- 

 long, smoothish, pinnatifid ; segments uncinate, serrate ; flowers axillary, 

 on pedicels ; segments of the calyx leafy, notched and toothed. 



Woods. Can. to Car. July, Aug. %. — Stem 2 — 3 feet high, much branched. 

 Flowers smaller than in the preceding, yellow, villous, very caducous. 



Bushy Gerardia, 



