DIDYNAMIA.— ANGIOSPERMIA. 231 



nectary at the base. Caps. 2-celled, bursting at 

 the summit, with reflected teeth. 



397. COLLINSIA. Cal. 5-cleft. Cor. bilabiate, ori- 



fice closed ; upper lip bifid ; the lower trifid ; 

 intermediate segment carinately saccate, and 

 closed over the declinate style and stamens. 

 Caps, globose, partly 1 -celled, and imperfectly 

 4-valved. Seeds 2 — 3, umbilicate. 



398. GERARDIA. Cal. half 5-cleft, or 5-toothed. 



Cor. subcampanulate, unequally 5-lobed ; seg- 

 ments mostly rounded. Caps. 2-celled, opening 

 at the summit. 



399. PEDICULARIS. Cal. ventricose, half 5-cleft. 



Upper lip of the Cor. arched, laterally com- 

 pressed, emarginate. Caps. 2-celled, oblique, 

 mucronate. Seeds angular. 



400. M1MULUS. Cal prismatic, 5-toothed. Cor. 



ringent ; upper lip reflexed at the sides ; palate 

 of the lower lip prominent. Stig. thick, bifid. 

 Caps. 2-celled, many seeded. Seeds minute. 



401. CHELONE. Cal. 5-parted, with 3 bracts. Cor. 



ringent, ventricose. Sterile filam. shorter than 

 the rest ; anthers woolly. Caps. 2-celied, 2- 

 valved. Seeds membranaceously margined. 



402. PENTSTEMON. Cal. 5-leaved. Cor. bilabi- 



ate, ventricose. The fifth steril filament longer 

 than the rest, and bearded on the upper side. 

 Caps, ovate, 2-celled, 2-valved. Seeds nume- 

 rous, angular. 



403. MARTYNIA. Cal. 5-cleft. Cor. ringent. Caps. 



ligneous, corticate, 4-celled, 2-valved, each of 

 the valves terminating in a long hooked beak. 



** Calyx 4-cleft. 



101. SCHWALBEA. Cal. ventricose-tubular ; upper 

 segment shortest ; the lower large and emargi- 

 nate. Cor. ringent ; upper lip entire, arched. 

 Caps, ovate-oblong, 2-celled, 2-valved ; dissepi- 

 ment produced by the inflected margin of the 

 valves, and parallel with the longitudinal re- 

 ceptacle. Seeds numerous, imbricated, linear, 

 winged. 



