126 DICOTYLEDONOUS PLANTS. 



1. L. salicaria var. pubescens Pursh : pubescent ; leaves opposite and 

 ternate, sessile, lanceolate, cordate at the base ; flowers with 12 sta- 

 mens, terminal, verticillate-spiked ; capsule oblong. 



HAB. Wet meadows. Can. and N. S. July, Aug. L(. Stem 2 feet 

 high. Fhwers purple, very showy. Pursh. Pwrplc Loosestrife. 



2. L. hyssopifolia Linn. : stem sparingly branched, square ; leaves 

 alternate and opposite, linear-lanceolate, somewhat obtuse ; flowers 

 axillary, subsessile, shorter than the leaves ; bracts acute, small ; pe- 

 tals 46, oblong ; stamens 5 8. 



HAB. Low grounds. N. Y. Nutt. II. Stem 12 18 inches 

 high. Flowers pale purple. I have a specimen from Connecti- 

 cut which agrees exactly with Elliott's L. lanceolatum the L. vvr- 

 gatum of Walter, and I am inclined to believe that these two 

 plants have been confounded. 



3. CUPHEA, Jacq. 



Calyx tubular, ventricose, 612 toothed, unequal. Petals 

 6 7, unequal. Stamens 11 14, rarely 6 7, unequal. 

 Style filiform. Stigma simple or sub-bifid. Capsule mem- 

 branaccous, 1 2-celled, at length bursting longitudinally. 



Icosandria. Monogynia. 



C. viscosissima Jacq. : viscous ; leaves opposite, petioled, ovate-oblong, 

 a little rough ; flowers lateral, solitary, on short peduncles ; calyx 6- 

 toothed ; petals 6 ; stamens 12. 



HAB. Mountains. N. Y. to Geor. W. to Ken. Sept. . 

 Stem 12 18 inches high, erect, branching. Flowers purple. 

 Dr. Matthew Stevenson has found this plant on thewet ground* 

 near Cambridge, N. Y. 



4. DECODON. Gmel. De Cand. 



Calyx hemispheric-campanulate, 10-toothed, 5 teeth longer 

 and spreading. Petals 5, undulate. Stamens 10, 5 very 

 long. Capsule covered >vith the calyx, 3-celled, 3-valved. 

 Seeds minute, apterous. Icosandria. Monogynia. 



D. verticillatum Ell. LytJirum tcrticillatum Linn. 



HAB. Swamps. Can. to Flor. Aug. 2j..Stem 2 3 feet high. 

 erect, pubescent. Leaves opposite and alternate, sometimes by 

 threes, lanceolate, petiolate. Flowers axillary, whorled. Pe- 

 tals undulate, purple. Fruit subglobose. Swamp Willow-herb. 



ORDER XL VII. MELASTOMACE^. De Cand. Lind. 



Calyx with 4 or 5 teeth or divisions, which are more or less 

 deep, or are sometimes united and separate from the tube like 

 a lid. Petals equal to the segments of the calyx, perigvnous. 



