CLASS XXI. ORDER H. IIJ 



thick, 2-parted : berry with sharpish seeds. 34. 97 

 —sarfx^Ms, (cucumber) angles of leaves strait, fruit 

 oblong rough, (v). y. e. — me/o, (musk-melon) angles 

 of leaves round, fruit torulose. e. 



Melothria. Staminate flowers — calyx S-tooth- 

 ed- corol bell-form : filaments 3. Pistillate flow- 

 ers — style 1 : stigmas 3 : berry 3-celled, many- 

 seeded. 34. 97 — fiendula^ (creeping cucumber) 

 leaves 5-lobed, peduncles 1-flowered. ©. y. 



CLASS XXL DIOECIA. 



Order IL Diandria, 



Vallisneria. Staminate flowers — spathe 2- 

 parted : spadix covered with florets : perianth 3- 

 parted. Pistillate flowers — spathe 2 -cleft, l-flow- 

 ered : perianth 3-parted, superior : corol 3-petaI- 

 led : capsule l-cellcd, many-seeded. (Stamens 2 

 and 6) I. 22 — americana^ (tape-grass) leaves linear, 

 peduncles strait. !2/. — sfiiralis^ peduncle of the 

 fruit spiral, leaves linear with tapering base. 



Salix. Staminate flowers — ament cylindric : 

 calyx a scale, with a nectariferous gland at the 

 base. Pistillate flowers — ament and caiyx like the 

 staminate : style 2-cleft : capsule I -celled, 2 valv- 

 ed: seed with egret-like down. \i . 50. 99. — Leaves 

 serrate — nigra. (brittle-joint willow) leaves lance- 

 olate acuminate glabrous with hairy petioles, stam- 

 inate flowers 4-stamened and in perfection after the 

 leaves appear. — -conifera^ (cone willow) leaves 

 lance oblong remotely serrulate glabrous above 

 and downy beneath, stipules lunate. — eriocep.hala^ 

 (swamp willow) twigs downy, leaves oblong-oval 

 sub-retuse at base, aments downy. — vitellinUf (yel- 

 low willow) leaves lance-ovate acute glabrous above 

 -—iucida^ leaves glabrous oblong acuminate with 

 glandular serratures^ staminate flowers in perfec- 



