SCROPHULARINEjE. 265 



HAB. Sandy swamps, N. Y, to Car. .Aug. 2j..--Stem l*-2 

 feet long, rooting at base. Flowers bright yellow, on axillary 

 peduncles. Hedge Hyssop. 



2. G. mrginica Linn. : stem pubescent, assurgent, terete ; leaves 

 smooth, lanceolate, sparingly dentate-serrate, attenuate and connate at 

 the base ; segments of .the calyx equal. 



. HAB. Inundated meadows. Can. to Car. W. to Miss. July, 

 Aug. If. Stem 6 inches high, branched at base. "Peduncles 

 shorter or longer than the leaves ; upper ones opposite. 'Flow- 

 ers yellowish- white. 



3. G. megalocarpa Ell. : leaves lanceolate, serrate, pubescent ; pe- 

 duncles opposite, longer than the leaves ; segments of the calyx linear, 

 as long as the globose capsule. G. acuminata Pursh. (excl. syn.) 



HAB. Ditches and pools. Penn. to Car. July Aug. L. Floio- 

 ers pale-yellow, 'large. Capsule larger than in any other species. 



8. LINDERNIA. Linn. 



Calyx 5-parted. Corol tubular ; ringent ; upper lip short, 

 emarginate ; lower one trifid, unequal. Filaments 4 ; 2 longer, 

 forked and sterile. Stigma emarginate. Capsule. 2-celled, 

 2-valved ; .dissepiment parallel with the valves. 



Diandria. Monogynia. 



1. L. dilatata Muhl. : leaves dilated at the base, clasping, remotely 

 toothed ; peduncles longer than the leaves. L. pyxidaria Pursh. Gra- 

 tiola anagalloidea Mich. 



HAB. Inundated banks. N. Y. to Car. July, Aug. 0. Stem 

 6 inches high, 4-sided-, smooth. Flowers pale purple, on alter- 

 nate and opposite peduncles. \ 



2. L. attenuata Muhl. : leaves lanceolate and obovate, narrowed at 

 the base ; peduncles shorter than the leaves, erect. L. pyxidaria var. 

 major Pursh. 9 



HAB. Inundated banks. N. Y. to Car. July Sept. 0. Stem 

 , erect or procumbent. Peduncles shorter or nearly as long as the 

 leaves. -,-".. u 



3. L. monticola Muhl. : stem slender, dichotomous ; radical leaves 

 spathulate ; cauline ones linear, small- and remote ; peduncles very 

 long, at length deflected. 



HAB. White Hills, N. H. June. U-Stem erect, 46 inches 

 high. Radical leaves obscurely toothed, punctate ; cauline ones 

 very few. Flowers pale blue. 



9. SCHWALBEA. Linn. 



Calyx ventricose, tubular, obliquely 4-cleft ; upper seg- 

 ment shortest; the lower large, emarginate or-bidentate. Co- 

 rol bilabiate ; upper lip entire, arched ; the lower 3-lobed. 

 Capsule ovate-roundish, 2-celled, 2-valved ; dissepiment pro- 

 duced by the inflected margin of the valves, and parallel with 



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