506 DICOTYLEDONOUS PLANTS. 



augural Thesis, 1804. Barton's Collection for a Mat. Med. of 

 the U. 8. and Big. Mcd. Bot. ii. 142. Sassafras. 



ORDER CIT. EL^EAGNEjE. Juss. Lind. 



Flowers dioecious, rarely monoclinous. STERILE FL. 

 Stamens 3, 4 or 8, sessile ; anthers 2-celled. FERTILE FL. 

 Perianth tubular, persistent ; the limb entire, or 3 4-toothed. 

 Ovary superior, simple, 1-celled ; ovule solitary, ascending, 

 stalked ; style short ; stigma simple, subulate, glandular. 

 Fruit crustaceous, enclosed within the perianth, becomes suc- 

 culent. Seed erect ; embryo straight, surrounded by very 

 thin fleshy albumen ; radicle short, inferior ; cotyledons fleshy. 



Trees or shrubs, covered with leprous scales. Leaves al- 

 ternate or opposite, entire, without stipules. 



1. SHEPHERDIA. Null. 



Dioecious. STERILE FL. Perianth 4-cleft. Stamens 8, 

 included, alternating with 8 glands. FERTILE FL. Perianth 

 4-cleft, campanulate, superior. Style I: Stigma oblique. 

 Berry 1-seeded. Dioecia. Octandria. 



S. canadcnsis Nutt. : leaves oblong-ovate, nearly smooth above, slel- 

 lately hairy and scaly beneath ; the scales ferruginous and deciduous. 

 Hippophae canadensis Wittd. Pursh. 



HAB. Can. and Western part of N. Y. N. to Arc. Amer. July. 

 *?. A shrub 6 8 feet high. Hewers minute. Berries scaly, 

 sweetish. 



ORDER CHI. THYMELE^. R. Brown. Lind. 



Perianth inferior, tubular, coloured ; the limb 4- seldom 5- 

 cleft ; aestivation imbricate. Stamens definite, periginous, 

 usually 8, sometimes 4 or 2 ; anthers 2-celled. Ovary soli- 

 tary; style 1 ; stigma undivided. Fruit a nut or drupe ; al- 

 bumen none, or thin and fleshy ; embryo straight, inverted ; co- 

 tyledons plano-convex. 



Shrubs with a tough bark. Leaves alternate or opposite, 

 entire. 



1. DIRCA. Linn. 



Perianth coloured, campanulate ; limb obsolete. Stamens 

 8, inserted into the perianth, unequal. Style 1. Berry 1- 

 seeded. Octandria. Monogynia. 



