330 SCROPHULARIACE^E. (FIGWORT FAMILY.) 



* Sterile filaments minute or none: corolla whitish, with the tube yellowish. 



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

 leaves lanceolate, narrowed at the base, sparingly toothed ; peduncles almost equal- 

 ling the leaves (' '- 1' long) ; pod ovoid (2" long). Very common. 



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

 lance-ovate or oblong, toothed ; peduncles scarcely longer than the calyx and the 

 large (3") globular pod. N. Jersey to Illinois, and southward. 



* * Sterile filaments slender, tipped with a little head: leaves short (^'-1' long). 



3. G. viscbsa, Schweinitz. Clammy -pubescent or glandular ; leaves ovate- 

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

 whitish, yellow within. Kentucky and southward. 



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

 equalling the peduncles; corolla golden-yellow (' long). Sandy swamps, N. 

 Vermont and New Hampshire to Virginia, and southward, 



2. Anthers with no broad connective ; the cells vertical : hairy plants, with erect rigid 

 and more simple stems, from an apparently annual root: sterile filaments tipped 

 with a head. 



5. G. pi!6sa, Michx. Leaves ovate or oblong, sparingly toothed, sessile 

 (' long) ; flowers nearly sessile; corolla white, scarcely exceeding the calyx. 

 Low ground, Camden Co., New Jersey ( C. E. Smith, C. F. Parker), Maryland, 

 and southward. 



12. ILYSANTHES, Raf. (LINDEENIA, Muhl.) 



Calyx 5-parted, nearly equal. Upper lip of the 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 of the corolla, 2-lobed, without 

 anthers ; one of the lobes glandular ; the other smooth, usually short and tooth- 

 like. Style 2-lipped at the apex. Pod ovate or oblong, many-seeded. Small 

 and smooth annuals, with opposite leaves, and small axillary (purplish) flowers, 

 or the upper racemed, produced all summer. (Name from iXvs, mud, or mire, 

 and civQoSi flower.) 



1. I. gratioloides, Benth. (FALSE PIMPERNEL.) Much branched, dif- 

 fusely spreading (4' -8' high); leaves ovate, rounded, or oblong, sparingly 

 toothed or entire, the upper partly clasping. (Capraria gratioloides, L. Lin- 

 dernia dilatata, & L. attenuata, Muhl. ) Wet places : common. 



13. MICRANTHEMUM, Michx. (Including HEMIANTHUS, Nutt.) 



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- 

 ment with a glandular (mostly basal) appendage : anthers 2-celled, didymous. 

 No sterile filaments. Style short, its apex or the stigma 2-lobed. Pod glob- 

 ular, 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 



