576 MONOCOTYLEDONOUS PLANTS. 



HAB. Sandy soils. N. Y. to Car. June. It. Stem a foot high , 

 procumbent and erect. Flowers blue. Fertile stamens 2. 



Day Flower. 



2. C. virginica Linn. : inner segments of the perianth nearly equal ; 

 leaves lanceolate, somewhat petiolate, with the throat bearded ; stem 

 erect. C. longifolia Mich. 



HAB. Woods. Penn. Mukl. S. to Car. July. ll.Stcm 2 

 feet high. Flowers blue, clustered at the top of the stem. Fer- 

 tile stamens 3. 



2. TRADESCANTIA. Linn. 



Perianth in 2 rows ; outer one 3-pnrted ; inner one 3-part- 

 cd petaloid. Filaments 6, villous. Capsule superior, 3-cell- 

 ed, many-seeded. Hexandria. Monogynia. 



1. T. virginica Linn. : stem erect, branching, smooth ; leaves long, 

 lanceolate, smooth ; flowers in an imperfect umbel, sessile, pubescent. 

 T. cristata Walt. 



HAB. Shady woods. Penn. to Car. W. to Miss. May. 1C. 

 Stem a foot high. Flmoers purple, in terminal compound clus- 

 ters or umbels, with a large 2-leaved involucre at base. 



Spider Wort. 



2. T. rosea Mich. : erect, simple ; leaves linear, long, smooth ; pe- 

 duncles elongated ; calyx smooth. T. virginica Walt. 



HAB. Moist woods. Penn. to Geor. May. If. Stem 8 12 

 inches high. Flowers smaller than in preceding, with the inner 

 segments rose coloured, and three times as long as the outer ones, 



ORDER CXXXII. ALISMACEJE. Broum. Lind. 



Perianth 6-parted, in two rows ; outer herbaceous, inner 

 petaloid. Stamens definite or indefinite, hypogynous. Ova- 

 ries of several 1-ce.lled carpels ; ovules erect or ascending, so- 

 litary or in pairs, at a distance from each other ; styles and 

 stigmas several. Fruit dry, not opening, 1 or2-seeded. Seeds 

 without albumen ; embryo shaped like a horse-shoe ; radicle 

 next the hilinn. 



Floating plants. Leaves with paraHel veins. 



1. SAGITTARIA. Linn. 



Monoecious. Perianth 6-parted ; 3 outer segments per- 

 sistent calycine ; 3 inner coloured, petaloid. STERILE FL. 

 Stamens about 24. FERTILE FL. Ovaries numerous. Cap- 

 tules compressed, margined, 1-seeded. 



Monoecia. Pofyandria. 



t . 



