244 DICOTYLEDONOUS PLANTS. 



Stigma 2-lobed. Glands 5, alternating with the stamens. 

 Capsule 1 -celled, 2-valved, many- seeded. 



Pcntandria. Monogynia. 



V. tacunosa Pursh : leaves reniform, subpeltate, slightly crenate, la- 



cunose beneath; petioles bearing the flowers; corol smooth. V. 



aquatica R. 4* & V. trachysperma Ett. Menyanthes trachynpenna Midi. 



HAB. Ponds and lakes. N. Y. to Car. Aug. 2j..8lem long, 



filiform, floating. Leaves on long petioles. Flowers white. 



somewhat umbelled. Abundant in Sand Lake, N. Y. 



10. MENYANTHES. Linn. 



Calyx 5-parted. Corol funnel-form; limb spreading, 5- 

 lobed, equal, hairy within. Stamens 5. Style 1. Stigma 

 capitate. Capsule 1-celled, with the axis of the valves semi- 

 niferous. Pentandria. Monogynia. 



M. trifoliate, Linn. : leaves ternate, petioled, sheathing, smooth. 

 HAB. Marshes. Subarc. Amer. to Virg. May. L. S!tem8 12 

 inches high. Flowers pale red, in a terminal raceme. 



. Buck-beav. 



11. OBOLARIA. Linn. 



Calyx 2-parted, in the form of bracts. Corol campanulate, 

 4-cleft ; segments entire, sometimes crenulate. Stamens 4, 

 subdidynamous, proceeding from the clefts of the corol. Stig- 

 ma emarginate. Capsule ovate, 1-celled, 2-valved, many- 

 seeded. Tetrandria. Monogynia. 



O. rirginica Linn. 



HAB. Woods. Penn. to Car. April, May. 2. I Stem 4 G 

 inches high, cespitose, nearly simple, smooth. leaves opposite, 

 obovate, sessile, glaucous. Flowers in pairs OT threes, towards 

 the top of the stem, white or pale red. 



ORDER LXXX. BIGNONIACE.E. Brown. Lind. 



Calyx divided or entire, sometimes spathaceous. Corol 

 hypogynous, monopetalous, usually irregular, 4 5-lobed. 

 Stamens 5, unequal, always 1, sometimes 3, sterile; anthers 

 2-celled. Ovary seated in a disk, 2-celled, or spuriously 4- 

 celled, many-seeded. Style 1 ; stigma of 2 plates. Capsule 

 1 or 2-celled, sometimes spuriously 2 or 4-celled, 2-valved. 

 Seeds transverse, compressed, often winged ; albumen none ; 

 embryo straight, foliaceous ; radicle next the hilum. 



Trees or shrubs, often twining or climbing. Leaves 

 site, or rarely alternate, without stipules. 



