280 71. EMPETRACEZ.—72. EUPHORBIACES. 
Order LXXI. EMPETRACE#. 
Dicecious. Perianth of hypogynous scales imbricated in several 
rows. Stam. equal in number to the inner row and alternate 
with them, free. Ovary free, on a fleshy disk, 2—9-celled. 
Ovules solitary, ascending. Style 1. Stigma radiant. Fr. fleshy 
Hee bony cells. Embryo in the axis of fleshy albumen. Radicle 
inferior. 
1. Emperrum. Cal. 3-parted. Pet. 3. Stam. 3 im the 
male fl. Style short, stigma dilated peltate with 6—9 rays. 
Berry globose, 1-celled. Seeds 6—9.—G. F. G. Monochl. 42. 
1. Emperrum Linn. Crowberry. 
1. E. nigrum (L.); procumbent, |. linear-oblong their margins 
meeting in a white line beneath.—F. B. 526.—A small procum- 
bent leafy heathhke shrub. FI. axillary, small, purple. Stigma 
with 9 rays. Berries black.—Mountain heaths. Sh. V. 
Order LXXIT. EUPHORBIACEZ:. 
Fl. usually monecious. Perianth lobed or 0. Male flowers 
of 1 or more stamens. Anth. 2-celled. Fem. fl. of 1 superior 
2—3-celled ovary. Styles 2—3. Stigma compound or simple. 
Caps. opening with elasticity ; cells 2—3, with 1 or 2 suspended 
seeds in each. Embryo in fleshy albumen. Radicle superior.— 
For fig. of genera see G. F. G. Monochl. 36. 40. 41. 
1. Buxus. Fl. moncecious.—Male. Cal. 3-parted. Pet. 2. 
Stam. 4.—Fem. Cal. 4-parted. Pet. 3. Caps. with 3 horns, 
3-celled, 6-seeded. 
2. Evpuorsia. Fl. incomplete, collected into monecious 
heads consisting of 1 female and numerous male flowers. In- 
volucre campanulate, with 5 divisions and 5 alternate glands. 
Males consisting of a single stamen upon « pedicel, inter- 
mixed with scales and surrounding the female. Fem. a single 
pistil. Styles 3. Stigmas bifid. Caps. 3-celled, bursting 
at the back. Seeds solitary, pendulous. 
3. Mercuriauis. Fl. dicecious or monccious. Perianth 
3-parted.—Male. Stam. 9—16.—Fem. Style short, forked. 
Caps. 2-celled. Cells 1-seeded, bursting at the back. 
1. Buxus Linn. Box. 
1. B. sempervirens (L.); 1. ovate-oblong coriaceous shining 
above, petioles ciliated, anth. ovate-sagittate.—E. B.1341.—A 
