SCROPHULARIACE.E. (fIGWORT FAMILY.) 313 



1. I. grandiflora, Beuth. Stem simple, ascending from the creeping 

 base, very leafy ; leaves roundish, entire, nerveless, partly clasping ; peduncles 

 2-3 times as long as tlie leaves ; sterile stamens lobed at the middle. — 

 Margins of pine barren ponds, Georgia and Florida. — Leaves 3" -4" long. 

 Corolla 3" - 4" long. 



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

 leaves lanceolate, oblong, or ovate; the lowest narrowed iuto 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 ; 

 capsule oblong, acute, scarcely longer than the calyx. — Springs and rivulets, 

 common. May -Sept. — Stem 6'- 12' long. Leaves i'-l' long. Corolla 

 3" -4" long. 



3. I. refraeta, 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 tlian the leaves, re- 

 flexed in fruit ; corolla pale l)lue variegated with purple ; capsule oblong-linear, 

 twice as long as the calyx. — Springs and muibly banks of rivulets in the 

 middle and upper districts. July - Sept. — Stem 6' - 1 2' higii. lladical leaves 

 r long. Corolla 3" -4" long. 



4. I. saxicola, Chapm. Stems . clustered, leafy, simple or sparingly 

 branched ; leaves oblong, sessile ; the radical ones narrowed into a petiole ; 

 peduncles rather stout, 3-4 times as long as the leaves ; capsule ovoid, ratlier 

 longer than the calyx. (Lindernia, J/. ^. Curtis.) — On rocks at Tolula 

 Falls, Georgia, and Cherokee, North Carolina (Curtis). xVug. 11 "? — Stems 

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



n. MICRANTHEMUM, Miehx. 



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 witli 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. — Small 

 smooth perenni.'il herbs witli creeping or floating stems, opposite entire leaves, 

 and minute axillary white flowers. 



1. M. orbiculatum, Michx. Stems creeping or floating, freely 

 branched, 3' - 12' long ; leaves yellowish, orbicular, nearly sessile, 2" - 4" wide ; 

 flowers opposite or alternate, nearly sessile ; corolla equally 4-lobed, or the 

 upper lip short or rudimentary. — Ponds and muddy banks in the lower dis- 

 tricts. June - August. 



2. M, Nuttallii, Gray. Stems creeping or erect, 1'- 2' high ; leaves obo- 

 vate, 2" - 3" long ; flowers alternate, the calyx as long as its ])edicel ; tipper 

 lip of the corolla oi)Solete, tiie middle lobe of the lower linear. — Muddy 

 banks near the coast. August- Oct. 



Var. ? glomeratum. Stems erect and tufted, r-3' higli, or long (6'- 

 12') and floating; leaves opposite, or 3-4 in a whorl, olJong-linear ; flowers 

 mostly in a terminal cluster, tlie top-shaped calyx longer than its pedicel. — 

 Rivers aud wet banks, South Florida. 



