3SG 
RHODODENDRON, ROSA. 
10—1. RHODODENDRON. 18. 50. 
viax"imum, (wild rosebay. E. r. Ju. T?.) leaves oblong', glabrous, paler be- 
neath : umbels terminal, dense : corollas somewhat bell-form. 4 — 20 f. 
Exotic. 
pcn"ticum, (rose bay. p. b.) leaves oblong, glabrous, both sides coloured alike : 
corymbs terminal : corolla bell-wheel-form : petals lanceolate. 
5—3. RHUS. 43. 94. 
glabruvi , (sleek sumach. O. g. r. Ju. Tj.) branches, petioles and leaves gla- 
brous : leaves pinnate, many paired ; lcafets lance-oblong, serrate, whitish 
beneath : fruit silky. The leaves of both the species arc used for tanning 
morocco leather. Berries red and sour. 6 — 12 f. 
rcr"nix , (poison sumach, y-g. J — Ju. 1?.) very smooth; leaves pinnate; leaf- 
ets in many pairs, oval, abruptly acuminate, entire: panicle loose; flow- 
ers dioecious. A small tree. S. 
to.ricodcn"dron, (O. g-y. J — Ju. b>.) stem erect : leaves ternate ; lcafets broad- 
oval, entire or sinuate-dentate, sub-pubescent beneath : flowers dioecious, 
in sessile axillary rccemcs. 1 — 3 f. Var. radicans, (poison ivy) stem clirnb- 
ing. 
Exotic. 
cot' inns, (false fringe-tree, aaron’s beard, p-g. Ju. 1?.) leaves simple, obovate 
and ovate ; panicle racemes plumose. A small tree, with v ery minute flow- 
ers supported on capillary, downy, or hairy peduncles. Indigenous to Si- 
beria, Austria and Lombardy. 
5—1. RIBES. 36. 85. 
Currant-likc. Floicers racemcd. 
Jlo'ridum, (wild black currant. O. M. Ij.) unarmed: leaves punctate both 
sides : racemes pendant : calyx cyliudric ; bracts longer than the pedicels. 
3—4. f. S. 
Gooseberry-like. Peduncles mostly fcic-Jlowered, rarely sub-racemed. 
trifio'rum , (wild gooseberry. A. g. M. lj.) spine sub-axillary; leaves glabrous, 
3 — 5-lobed, gaslr toothed ; peduncles sub 3-flowered, with the pedicels elon- 
gated ; bracts very short ; petals spatulate, undulate ; style hirsute, half 2 
err 3-cleft, exsert : berry glabrous. Berries pale-red. 3—4 f. S. 
Exotic. 
rubrum, (currant, g. M. b.) unarmed ; racemes glabrous, nodding ; corolla 
flat ; petals obcordatc ; leaves obtusely 5-lobed ; stem erect. Berries red. 
2—4 f . 
nigrum, (black currant, g. M. Tj.) unarmed; leaves punctate beneath; ra- 
cemes lax ; flowers bell-form ; bracts shorter than the pedicels. Berries 
black. • 5—3 f. 
grossula'ria, (cnglish gooseberry, g. M. Ij.) branches prickly ; petioles hairy ; 
bracts 2-leaved ; berry glabrous or hirsute. 2 — 4 f. 
19—15. RICINUS. 38. 96. 
Exotic. 
commu'nis , (castor-oilplant, palma christi. tv).) leaves peltate, palmate; lobes 
lanceolate, serrate : stem with hoary mealiness. 4 — 6 f. 
16-10. ROBINIA. 32.93. 
pseudo-aca'cia , (locust tree, false acacia. A. w. M. Tj) leaves pinnate, with a 
terminal leafet : stipules thorny, or a thorn ; racemes pendant ; teeth of the 
calyx unawned ; legumes smooth. 30 — 10 f. 8'. 
11—13. ROSA. 35. 93. 
parvi'Jlora, (wild rose. O. r. w. T?.) germs depressed-globose ; germs and pe- 
.-^ehjficles hispid ; petioles pubescent, sub-aculeate; stem glabrous ; prickles 
