DIDYNAMIA.— ANGIOSPERMI A. 24 i 



HAB. Wet or dry soils. July — Nov. 0. Afoot 

 high, very slend. ; fl. very sm., blue. 



397. COLLINSIA. 



C. verna : leaves ovate-oblong, sessile, obtuse, t\u 

 inferior ones attenuated into long petioles. 



TIAB. River banks. July. 0. Afoot high, mi 

 nutely pubes. ; pedunc. axill. ; fl. particoloured. 



308. GERARDIA. 

 *. Flowers purple. 



1. G. purpurea : stem angular, much branched ; leaves 



scabrous linear, long and acute ; flowers subse* 

 sile ; segments of the calyx subulate. 

 HAB. Sandy soils and swamps. August — Oct. ©. 

 Stem 1 — 2 ft. high, slend. ; fl. large, axill. 



2. G. maritima : stem angular ; leaves linear, flesh}'. 



short, rather obtuse ; flowers pedunculate ; upper 



segments of the corolla ciliate ; calyx truncate. 



with minute teeth. 

 HAB. Salt marshes. July — Sept. 0. Stem G 



12 in. high ; fl. middle-sized. 

 .;. G. tenuifolia : much branched ; leaves linear, acute 



scabrous ; peduncles axillary, longer than the flow 



ors ; teeth of the calyx acute. 

 HAB. Fields and woods. Aug. — Sept. ©. Slew 



— 10 in. high ; fl. spread., smooth. 

 ). G. auriculata : subsimple, scabrous; leaves ovat-- . 



lanceolate, auriculata at the base, very entire, 



sessile ; flowers sessile, axillary. 

 ilAB. Fields and mountains. Aug. 0. Stem 6 



12 in. high ; fl. middle-sized. 



**• Flowen yellow. 

 », (5. flava; pubescent; stem nearly simple; leav. - 

 sabsessile, lanceolate, very entire or don 

 the inferior ones incised ; flowers subscssihv 

 HAB. Woods. Aug.— Sept. M. Stem 2—3 Jt. 

 fl. large. 

 . U. glauca : smooth ; stem paniculate ; I< 

 X 



