PLUMBAGINE^E. 291 



7. L. revoluta Nutt. : stem square, smooth, branched ; leaves oppo- 

 site, sessile, long linear, margin revolute j peduncles 1- flowered, sub- 

 terminal, nodding. 



HAB. Rocks. N. Y. to Del. Aug. U'Stem 1218 inches 

 high. Flowers yellow, mostly on the summit of the stem, on 

 slender peduncles. This species is abundant on the shores of 

 the great lakes, and Dr. Houghton informs me that he has found 

 it on the banks of the St. Croix river, in the North Western 

 Territory. 



7. ANAGALLIS. Linn. 



Calyx 5-parted. Corol rotate, 5-lobed. Stamens 5 ; fila- 

 ments hairy. Capsule, globular, opening hemispherically, 

 many-seeded. Pentandria. Monogynia. 



A. arvensi.s Linn. : stem procumbent, . branched j leaves opposite, 

 ovate, sessile, dotted beneath, very entire ; margin of the corol broad- 

 ly and very obtSsely crenate, pilose-glandular. 



HAB. Fields, &c. N. Y. to Car. July. . Stem 4 6 inches 

 high. Floioers scarlet, in solitary axillary peduncles. 



Scarlet Pimpernel. 



8. SAMOLUS. Linn. 



Calyx 5-cleft, semisuperior, persistent. Corol salver-form, 

 5-lobed. Stamens 5, antheriferous, opposite the segments of 

 the corol, and 5 (scales) alternate with them, sterile. Cap- 

 sule half inferior, 1-celled, 5-toothed, many-seeded ; recepta- 

 cle unconnected. . Pentandria. Monogynia. 



8. valerandi Linn. : stem erect ; leaves obtuse ; racemes many-flow- 

 ered ; pedicels with small bracts. 



HAB. Wet grounds. Can. to Car. July Sept. 24!. Stem.8 12 

 inches high, smooth. Leaves ovate, subpetiolate, entire and 

 somewhat fleshy. Floicers small, white. Water Pimpernel. 



ORDER XCV. PLUMBAGINE^. Juss. Lind. 



Calyx tubular, plaited, persistent. Corol monopetalous or 

 of 5 petals, regular. Stamens 5, hypogynous when the petals 

 are combined, inserted into the base of the petals when dis- 

 tinct. Ovary free, 1-celled ; ovule pendulous, from the end 

 of an umbilical cord, arising from the bottom of the cell ; styles 

 5, seldom 3 4, each bearing a subulate stigma. Fruit a utri- 

 cle. Seed pendulous ; embryo straight ; radicle superior. 



Herbs or under shrubs. Leaves alternate or clustered, un- 

 divided, somewhat sheathing at base. 



