384 SCROPHULAKIACE.fc. (FIGWORT FAMILY.) 



2. H. rotundifolia, Pursh. Nearly smooth, creeping; leaves round- 

 obovate, half-clasping (^-1' long), entire, basally nerved ; peduncles twice or 

 thrice the length of the calyx ; upper sepal ovate ; corolla white or pale blue. 

 Margins of ponds, 111. to Minn., Mo., and southward. 



3. H. amplexicaulis, Pursh. Stems hairy, creeping at base ; leaves 

 orii/e, clasping, entire, basally nerved; peduncles shorter than the calyx ; upper 

 sepal heart-shaped ; corolla blue. Margin of pine-barren ponds, N. J. and 

 Md. to La. Aromatic when bruised. 



* * Corolla obscurely bilabiate, the limb subfitjually 5-lobed ; stamens almost equal. 



4. H. Monniera, HBK. Glabrous, prostrate and creeping; leaves spat- 

 ulate to obovate-cuneate, entire or somewhat toothed, nearly nerveless, sessile ; 

 corolla pale blue. River-banks and shores near the sea, Md. to Tex. 



11. LI MO SELL A, L. MUDWORT. 



Calyx bell-shaped, 5-toothed. Corolla short, widely bell-shaped, 5-cleft, 

 nearly regular. Stamens 4; anthers confluently 1-celled. Style short, club- 

 shaped. Capsule globular, many-seeded ; the partition thin and vanishing. 

 Small annuals, growing in mud, usually near the sea-shore, creeping by slen- 

 der runners, without ascending stems ; the entire fleshy leaves in dense clus- 

 ters around the simple 1-flowered naked peduncles. Flowers small, white or 

 purplish. (Name from limus, mud, and sella, seat.) 



1. L. aquatica, L., var. tenuifolia, Hoffm. Leaves (with no blade 

 distinct from the petiole) awl-shaped or thread-form. Brackish river-banks 

 and shores, Lab. to N. J., and far north and west. (Eu., Asia, etc.) 



12. G RATIO LA, L. HEDGE-HYSSOP. 



Calyx 5-parted, the narrow divisions nearly equal. Upper lip of corolla 

 entire or 2-cleft, the lower 3-cleft. Fertile stamens 2, included, posterior; the 

 anterior mere sterile filaments, or wanting. Style dilated or 2-lipped at the 

 apex. Capsule 4-valved, many-seeded. Low herbs, mostly perennials, some 

 apparently annuals, with opposite sessile leaves, and axillary 1-flowered pedun- 

 cles, usually with 2 bractlets at the base of the calyx. Flowering all summer ; 

 all inhabiting wet or damp places. (Name from gratia, grace or favor, on ac- 

 count of supposed excellent medicinal properties.) 



1. Anthers with a broad connective, the cells transverse ; stems mostly diffusely 

 branched, or creeping at base, soft viscid-pubescent or smooth ; corollas 4- 6'' 

 long ; bractlets foliaccons, equalling the calyx. 



* Sterile filaments minute or none ; corolla whitish, ivith the tube yelloicish. 



1. G. Virginiana, L. Stem clammy-puberulent above (4-6' high); 

 leaves lanceolate with narrow base, acute, entire or sparingly toothed ; 

 l>ii] uncles almost equalling the leaves (-!' long) ; pod ovoid (2" long). Very 

 common. 



2. G. sphserocarpa, Ell. Smooth, rather stout (5 -10' high); leaves 

 lance-ovate or oblong to oval-obovate (1 -2' long), toothed ; peduncles scarcely 

 longer than the calyx and the large (3") globular pod, N. J. and Md. to 111., 

 south to Ha. aud Tex. 



