294 SCKOPHULARIACE^E. (FIGWOItT FAMILY.) 



9. ILYSANTHES, Raf. 



Calyx 5-partcd, bractless. Corolla bilabiate ; the upper lip short, erect, 

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

 two anterior ones sterile, 2-lobed, with one of the lobes tipped with a gland, the 

 other smooth, acute. Capsule ovate or oblong, as long as the calyx. Smooth 

 annuals, growing in wet or muddy places. Stems 4-anglcd. Leaves opposite. 

 Peduncles axillary, often reflexed in fruit. Flowers small, purplish. 



1. I. grandiflora, Benth. Stem creeping, very leafy; leaves roundish, 

 entire, nerveless, partly clasping ; peduncles 2-3 times as long as the leaves ; 

 sterile stamens lobcd at the middle. In Georgia, Nuttall. Leaves 3" -4" 

 long. Corolla larger than in the next. 



2. I. gratioloid.es, Bcnth. Stem erect, at length diffusely branched ; 

 leaves lanceolate, oblong, or ovate ; the lowest narrowed into a petiole, the 

 upper sessile, acute, obscurely toothed or entire ; lower peduncles mostly shorter 

 than the leaves, the upper much longer, spreading ; corolla pale blue, twice as 

 long as the calyx ; capsule oblong, acute, scarcely longer than the calyx. 

 (Lindernia dilatata and attcnuata, Ell. Gratiola anagallidea, Michx. G. tctra- 

 gona, Ell.?) Springs and rivulets, common. May -Sept. Stem 6' -12' 

 long. Leaves ^'- 1' long. Corolla 3" -4" long. 



3. I. refracta, Benth. Stem erect, very slender, forking ; radical leaves 

 tufted, oblong, obtuse, entire, narrowed at the base ; the others remote, small, 

 lanceolate, sessile ; peduncles filiform, many times longer than the leaves, re- 

 flexed in fruit ; corolla pale blue variegated with purple ; capsule oblong-linear, 

 twice as long as the calyx. (Lindernia monticola, Null.) Springs and muddy 

 banks of rivulets in the middle and upper districts, Mississippi to North Caro- 

 lina. July - Sept. Stem 6' -12' high. Radical leaves 1' long. Corolla 

 3" -4" long. 



4. I. saxicola. Stems clustered, leafy, simple or sparingly branched ; 

 leaves oblong, entire, obtuse, sessile ; the radical ones densely tufted, narrowed 

 into a petiole ; peduncles rather stout, 3-4 times as long as the leaves, widely 

 spreading or reflexed in fruit ; corolla blue, variegated ; capsule ovoid, rather 

 longer than the calyx. (Lindernia saxicola, M. A. Curtis.) On rocks at 

 Tolula Falls, Georgia, and Cherokee, North Carolina, Curtis. Aug. 1J. ? 

 Stems 3' - 5' high. Stem-leaves 2" - 4" long. Corolla 4" long. 



10. MICRANTHEMUM, Michx. 



Calyx 4-parted, or 4-cleft. Corolla somewhat bilabiate ; the upper lip 

 shorter, entire ; the lower 3-lobed, with the middle lobe longer. Stamens 2, 

 included ; the filaments with a gland-like appendage at the base : anther-cells 

 diverging. Style short : stigma capitate. Capsule 2-valved, few-seeded ; the 

 delicate partition vanishing at maturity. Seeds oblong, reticulate. A small 

 smooth perennial herb, with diffuse creeping stems, roundish opposite entire 

 leaves, and minute nearly sessile axillary white flowers. 



