RIIODORA— RIBES. 
155 
fall from it like rain. The leaves are large 
and silvery beneath. 
chrysan!' tTvum, adwaif species, with yel- 
low flowers. Ex. 
RHODO'RA. 10— I. (Rhodaicndra.) 
canade)i"sis, (false honeysuckle, p. M. 
^ .) leaves alternate, oval, entire, pubescent- 
glaucous beneath ; flowers in terminal um- 
bels or clusters, appearing before the leaves. 
Mountain bogs. 2 f. 
RHUS. 5—3. (TerebintacecE.) [From reo, to 
flow, so called because it was supposed to 
be useful in stopping haemorrhages.] 
gla'bnim, (sleek-sumach, g. r. Ju. ^.) 
branches, petioles, and leaves, glabrous ; 
leaves pinnate, many-paired ; leafets lance- 
oblong, serrate, whitish beneath ; fruit silky. 
The leaves are used for tanning morocco 
leather. Berries red and sour. 6 12 f 
ve/'nix, (poison-sumach, y-g. J-Ju. ^.) 
very smooth ; leaves pinnate ; leafets in 
many pairs, oval, abruptly acuminate, en- 
tire ; panicles loose ; flowers dioecious. A 
small tree. 
toxicoden" dron, (g-y. J-Ju. '^.) stem 
erect ; leaves ternate ; leafets broad, oval, 
entire or sinuate, dentate, sub pubescent 
beneath ; flowers dioBcious, in sessile, axil- 
lary racemes. 1-3 f. Yar. rad"icans (poi- 
son-ivy), stem climbing. 
typhi'na, (stag's-horn sumach, y-g. J. .) 
branches and petioles very villose ; leafets 
in many pairs, lance oblong, acuminate, 
acutely serrate, pubescent beneath ; flow- 
ers in oblong, dense panicles, dioecious ; 
clusters of fruit covered with a purple, vel- 
vety down ; berries red, and very sour. 
Rocky hills. 
copalli'num, (gum-copal tree, mountain 
sumach, y-g. Jn. ^ .) petioles winged, ap- 
pearing as if jointed ; leafets many-paired, 
oval-lanceolate, veiy entire, shining on the 
upper surface ; panicle sessile ; flowers 
dioecious. Fruit red, hairy, small. 
aromaficum, (y. M. leafets sessile, 
ovate-rhomboid, dentate, pubescent be- 
neath ; flowers amentaceous, dioecious. 2-6 
f. Mountains. 
jnt'milus, (Ju. ^ .) low ; branches and 
petioles pubescent; leafets oval, sharply 
toothed, tomentose beneath ; fruit silky and 
downy. Poisonous. 1 f. S. 
laurifnum, very glabrous ; leaves ellipti- 
cal or elliptic-ovate, obtuse or emarginate, 
Dften mucronate ; panicles crowded ; sta- 
mens 5 ; filaments very short. California. 
co'tinns, (purple fringe-tree, p-g. Ju. ^ .) 
leaves simple, obovate and ovate ; panicled 
racemes plumose. A small tree, with very 
minute flowers supported on capillary, 
downy, or hairy peduncles. Indigenous in 
Siberia, Austria, and Lombardy, often call- 
ed the periwig-tree from the curious ap- 
pearance of the seed-vessels which look 
like a powdered wig. Ex. 
vernicife'ra, (varnish or Japan sumach,) 
a native of India and Japan, where it is 
much esteemed on account of its gum, 
which forms the best varnish. 
RHYNCHOS'TORA, 3—1. (Cyperoidea.) [Prom 
runchos, the beak of a bird, and spora, a 
34* 
seed, the permanent style forming a beak to 
the seed.] 
aV'ha, (Ju. 2i.) spike corymb-fascicled; 
culm triangular above; leaves setaceous; 
pericarp somewhat lenticular; bristles 
about 10. 12-18 i. 
glomera'ta, (false bog rush, J. 2^.) spikes 
clustered in corymbs, distant, by pairs : 
stem obtusely angled ; pericarp obovate, 
wedge-form, very glabrous. 12-18 i. 
rariJl.o'7~iis, (M. 11.) stem and leaves se- 
taceous ; panicle loose, few-flowered ; seed 
obovate, rugose ; bristles as long as the 
seed, 1 f S. 
inexpan"sn, (Ju.) stem obscurely 3-ang- 
led ; panicles remote, pendulous ; seed ob- 
long, compressed, rugose ; bristles scab- 
rous, twice as long as the seed. 2 f S. 
dis"tans, (Ju.) stem 3-angled ; flowers in 
distant clusters; seed lenticular, slightly 
furrowed ; bristles setaceous. 12-20 i. <S. 
'puncta'to, fascicles lateral and terminal, 
clustered near the summit of the stem; 
seeds rugose, dotted, shorter than the 
bristles. 1-2 f. S. 
RI'BES. 5—1. (Cacti.) [Origin of the name 
doubtful.] 
Jlo'ridum, (wild black-currant, M. ^ .) un- 
armed ; leaves punctate both sides ; ra- 
cemes pendent ; calyx cylindric ; bracts 
longer than the pedicels. 3-4 f. 
tnjio'ni/m, (wild gooseberry, g. M. 
spine sub-axillary ; leaves glabrous. 3-5- 
lobed, gash-toothed ; peduncles sub-3 flow- 
ered ; pedicels elongated ; bracts very 
short ; petals spatulate, undulate ; style 
hirsute, half 2 or 3-cleft, exsert, berry glab- 
rous, pale red. 3-4 f 
ru'brum, (currant, g. M. T?,) unarmed, 
racemes glabrous, nodding; corolla flat; 
petals obcordate ; leaves obtusely 5-lobed ; 
stem erect ; berries red, 2-4 feet. Ex. 
ni'grum, (black currant, g. M. Ip.) un- 
armed; leaves punctate beneath ; racemes 
lax ; flowers bell form ; bracts shorter than 
the pedicels ; berries black. 5-3 f Ex. 
grosxula'ria, (English gooseberry, g. M. 
Tp.) branches prickly; petioles hairy; 
bracts 2-leaved ; berry glabrous or hirsute. 
2-4 f. Ex. 
albine-Zvium, (g-y. M. ^ .) leaves short, 
acutely lobed, smoothish ; nerves white , 
racemes recurved ; berries red, smooth. 
tri'Jidum, (y-g. M. .) leaves moderately 
lobed, smooth above, pubescent beneath; 
racemes lax, pubescent ; flowers rather 
flat ; segments of the calyx about 3-cleft , 
petals spatulate, obtuse ; ben-ies hairy, red. 
ri'gens, (mountain currant, M. f).) un- 
armed ; branches straight ; leaves long- 
petioled, acutely lobed and dentate, reticu- 
late-rugose, pubescent beneath: racemes 
lax ; becommg stiflly erect ; segments of 
the calyx obovate, obtuse ; berries red, 
hispid. 
glandulo'sum, (r-y.) branches prostrate ; 
leaves lobed, smoothish ; younger ones 
pubescent ; racemes sub-erect ; petals del- 
toid ; bracts minute ; berry hispid, most of 
the plant, particularly the calyx, covered 
; with glandular hairs. 2-3 f. 
