178 RIB 
12—1. PRUNUS. 
Flowers un racemes. 
Virginia’na, (wild cherry, rum cherry, cabinet cherry. O. w. M. h) 
racemes erect, elongated ; leaves ova.-oblong, acuminate, unequally 
serrate, glabrous both sides; petioles generally bearing 4 glands. 
In open fields the limbs of this tree spread out into an elegant oval 
top; butin dense forests it grows to a very great height, with a few 
contracted branches. 
Exotic. 
Cer” asus, (garden cherry. w. r. kh) umbel sub-peduncled ; leave lance- 
ovate, glabrous, conduplicate. 
Domes’ tica, (plum. w. M. hk) peduncles sub-solitary; leaves lance- 
ovate, convolute; branches thornless. 
10—1. PYROLA. (From pyrus, a pear, from the form of its leaf.) 
Rotundifo’lia, (shin leaf, pear leaf, wintergreen. O. w. J. 21) style d 
clined ; leaves rounded, or broad oval, obsoletely serrulate, sub-cori 
aceous, shining; petiole about as long as the lamina; scape many: 
flowered. 6—12. 1. ‘ 
11—5. PYRUS. 
Exotic. 
Commu/nis, (pear. E. w-r. M. hk) leaves ovate, serrate, (rarely entire 5) 
peduncles corymbed. 
Ma/lus, (apple. E. w-r. M. h) flowers in sessile umbels ; leaves ovate- 
oblong, acuminate, serrate, glabrous; claws of the petals shorter 
than the calyx; styles glabrous. Var. sylvestris, (wild apple,) leaves 
ovate serrate ; fruit small, austere. 
19—12. QUERCUS. 
Alba, (white oak. O. M. hk) leaves oblong, sinuate pinnatifid, pube-+ 
scent beneath; lobes obtuse, entire, narrowed at their bases, parti- 
cularly on full grown trees; fruit peduncled ; calyx somewhat bow] 
form, tubercled, flattened at the base; acorn ovate. ‘The most use- 
ful timber in America. 70—80. f. 
12—13. RANUNCULUS. (From rana, a frog.) 
A’cris, (crow foot, butter cup. O. y. M. 2) hairs close pressed, leaves 
3-parted; many-cleft; upper ones linear; peduncles terete; calyx 
spreading. 1—2. f. 
14—2. RAPHANUS.. 39. 63. 
Exotic. 
Sati’vus, (garden radish. w. J. @) leaves lyrate; silique terete; to, 
rose, 2-celled. There are several varieties of this species—one has 
a fusiform, another a globose, another a black root. 
5—l. RIBES. 
Triflo’rum, (wild gooseberry. A. g. M. hh) spine sub-axillary; leaves 
glabrous, 3—5-lobed, gash-toothed; peduncles sub 3-flowered, with 
