SCROPHULARIACK.K. (FHJWORT 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 the 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, Benth. 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 ; 

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

 common. May - Sept. Stem 6' -12' long. Leaves '-!' 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. Springs and muddy banks of rivulets in the 

 mid die and upper districts. July - Sept. Stem 6'-12' high. Radical leaves 

 1' 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, rather 

 longer than the calyx. (Liudernia, ,!/. A. Curtis.) On rocks at Tolula 

 Falls, Georgia, and Cherokee, North Carolina (Curtis). Aug. 2/ ? Stems 

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



11. MICH ANT HEMUM, 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. Small 

 smooth perennial herbs with 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, l'-2' high ; leaves obo- 

 vate, 2" -3" long ; flowers alternate, the calyx as long as its pedicel ; upper 

 lip of the corolla obsolete, the middle lobe of the lower linear. Muddy 

 banks near the coast. August -Oct. 



Var. ? glorneratum. Stems erect and tufted, 1'- 3' high, or long (6'- 

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

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

 Kivers and wet banks, South Florida. 



