SCROPHULAKIACE^:. 267 



* Flowers purple, 



1. Gf. purpwrea 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. July Sept. .Stem 

 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 peduncles. 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. ().Stem 612 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 Mick. : 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 ifl. Stem 12 15 inches high. Flowers sessile, often opposite, purple, 

 rarely white, hairy -pubescent. Auriculate Gerardia. 



** Flowers yellow. 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. 1\..Stem 2 3 

 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-linear. G. quer- 

 cifolia Pursh. 



Woods. N. Y. to Car. W. to Miss. Aug., Sept. ^.Stem 3 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. 7J-. Stem 2 3 feet high, much branched, 

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



Bushy Gerardia. 



