SPECIES AND VARIETIES. 63 



heart-shaped or kidney-shaped, smooth ; flowers terminal, 

 solitary, on recurved stalks, dull greenish-brown, bell-shaped, 

 three-cleft. — Mountainous woods. Fl. May. 



{77) Hippophae. Sallow Thorn. 

 H. rhamnoides : shrub, clothed with leprous scales ; leaves 

 alternate, linear-lanceolate, entire ; flowers dioecious, very small 

 and inconspicuous, the females succeeded by small yellowish 

 berries. — Sea Buckthorn. — Sandy cliffs. El. May. 



(78) Buxus. Box. 

 B. sempervirens : shrub ; leaves evergreen, ovate, convex, 

 shining; flowers small, green, sessile. — Chalky hills. Fl. 

 April. 



(79) Empetrum. Crowberry. 



E. nigrum : dwarf shrub ; leaves small, crowded, evergreen, 

 linear-oblong; flowers quite inconspicuous; fruits black. — 

 Crakeberry. — Mountain heaths. Fl. May. 



(80) Myrica. Gale. 



M. Gale : shrub ; leaves deciduous, lanceolate, serrated, 

 tapering and entire at the base, sweet-scented ; catkins short, 

 sessile along the ends of the branches, appearing before the 

 leaves. — Sweet Gale, Bog Myrtle, or Dutch Myrtle. — Bogs. 

 Fl. May. 



(81) Alnus. Alder. 



A. glutinosa : tree ; leaves roundish, wedge-shaped, obtuse, 

 wavy, serrated, glutinous, deciduous ; catkins 2-3 together in 

 loose terminal clusters ; the males long, pendent, the females 

 ovate or oblong, and in fruit somewhat resembling miniature 

 fir-cones. — River-sides and other wet places. Fl. March. 



