SCROPHULARIACE.E. (FIGWORT FAMILY.) 385 



* # Sterile filaments slender, tipped with a little head ; leaves short (^-l' long). 



3. G. viS3OSa, Schwein. Clammy-pubescent or glandular; leaves ovate- 

 lanceolate or obiony, acute, toothed, mostly shorter than the peduncles ; corolla 

 whitish, yellow wit/tin. Ky. to N. C. and Ga. 



4. G. uiireu, Muhl. Nearly glabrous ; leaves lanceolate or oblong -linear, 

 entire, equalling the peduncles; corolla golden-yellouo (' long). Sandy 

 swamps, Vt. and N. H. to Ohio, and south to Fla. 



2. Anthers with no broad connective, the cells vertical ; sterile filaments tipped 

 with a head ; hairy apparently annual plants, with erect rigid and more 

 simple stems. 



5. G. pilosa, Michx. Leaves ovate or oblong, sparingly toothed, sessile 

 (' long) ; flowers nearly sessile ; corolla white, 3-4" loug, scarcely exceeding 

 the calyx. Low ground, N. J. to Fla. and Tex. 



13. ILYSANTHES, Raf. 



Calyx 5-parted, nearly equal. Upper lip of corolla short, erect, 2-lobed ; 

 the lower larger and spreading, 3-cleft. Fertile stamens 2, included, posterior ; 

 the anterior pair sterile, inserted in the throat, 2-lobed, without anthers ; one 

 of the lobes glandular, the other smooth, usually short and tooth-like. Stigma 

 2 lobed. Capsule ovate or oblong, many-seeded. Small and smooth annuals, 

 with opposite leaves, and small axillary (purplish) flowers, on filiform naked 

 pedicels, or the upper racemed, produced all summer. (Name from l\vs, mud, 

 or mirp, and &vdos fiower.) 



1. I. riparia, Raf. (FALSE PIMPERNEL.) Much branched, diffusely 

 spreading (4 - 8' high), or at first simple and erect, leafy ; leaves ovate, rounded, 

 or oblong, sparingly toothed or entire, the upper partly clasping ; corolla 3" 

 long. (I. gratioloides, Benth.) Wet places; common. 



14. MICRANTHEMUM, Michx. 



Calyx 4-lobed or 4- (rarely 5-) parted. Corolla short, 2-lipped, with the up- 

 per lip considerably shorter than the lower, or 1 -lipped, the upper lip obsolete ; 

 lower lip 3-cleft, the middle lobe longest. Stamens 2, anterior, the short fila- 

 ments with a glandular (mostly basal) appendage ; anthers 2-celled, didymous ; 

 no sterile filaments. Style short; the stigma 2-lobed. Capsule globular, thin, 

 with a very delicate or evanescent partition, several -many-seeded. Small, 

 smooth, depressed and tufted or creeping annuals, in mud or shallow water, 

 with opposite and entire rounded or spatulate sessile leaves, and minute white 

 or purplish flowers solitary in the axils of some of the middle leaves (usually 

 one axil floriferous, that of the other leaf sterile). (Name formed of fjLiKpJS, 

 small, and avQffjLov, flower.) 



1. M. Nuttallii, Gray. Branches ascending, 1 -2' high; leaves obovate- 

 gpatulate or oval ; peduncles at length recurved, about the length of the calyx, 

 which is bell-shaped, 4-toothed and usually split down on one side, in fruit be- 

 coming pear-shaped ; middle lobe of the corolla linear-oblong, nearly twice the 

 length of the lateral ones ; appendage of the stamen nearly as long as the fila- 

 ment itself; stigmas subulate. Tidal mud of rivers, N. J. to Fla. Aug. - 

 Oct. 



25 



