148 Class VIII. Order I. 



159. (ENOTHERA. 



(ENOTHERA BIENNIS. L. Tree Primrose. 



Leaves ovate-lanceolate, flat ; stem a little rugged 



and villotis ; stamens shorter than the corolla. Willd. 



The large, yellow flowers of this plant are frequently seen 

 overtopping the fences by which they grow, during most of the 

 summer. In the country it is vulgarly known by the name of 

 Scabish, a corruption probably of Scabious, from which however 

 it is a very different plant. Stem from three to five feet high, 

 rough, hairy, and branching. Root leaves petioled ; stem leaves 

 sessile ; both pubescent, slightly toothed. Flowers solitary, ax- 

 illary. Germ sessile, four grooved, surmounted by the long, 

 tubular calyx, which divides into four reflexed segments ; petals 

 large, roundish, sometimes emarginate. This plant, originally 

 American, is now naturalized, and very common throughout Eu- 

 rope. Biennial. 



CENOTHERA PUMILA. L. Diucirf Tree Primrose. 



Leaves lanceolate, very entire, obtuse ; capsules 



slightly pedicelled, elliptic-obovate, angular. Willd. 



Stem oblique at base, ascending, round, slender, about a foot 

 high. Leaves sessile, blunt. Flowers yellow, small, nearly ses- 

 sile, in a leafy spike. Petals inversely heart-shaped. Stamens 

 shorter than the corolla. Capsules inversely ovate, with eight 

 angles. Pastures. Perennial. 



This plant is exactly the CE. pumila of Custis' magazine, 

 t. 555. 



160. RHEXIA. 



KHEXIA VIRGINICA. L. Virginian Rhexia. 



Stem with four winged angles ; leaves sessile, 

 oval-lanceolate, serrate-ciliate, calyx with glandular 

 hairs. 



Stem square with membranous angles. Leaves opposite, oval, 

 three nerved, with scattered hairs on both sides and on the mar- 

 gin. Peduncles axillary and terminal. Calyx urn-shaped, hairy, 

 with four acute segments ; petals purple and finely contrasted with 



