RHODORA— RIBES. 
461 
fall from it like rain. The leaves are large 
and sih'ery beneath. 
chry!^an"thvm, a dwaif species, with yel- 
low flowers. Ex. 
RHODO'RA. 10—1. (Rhododcndra.) 
canaden"s/s, (false honeysuclile, 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. (Terebintaceoe.) [From reo, to 
flow, so called because it was supposed to 
be useful in stopping hsemorrliages.] 
glo'brum, (sleek-sumach, g. r. Ju. ^.) 
branches, petioles, and leaves, glabrous ; 
leaves pinnate, many-paired ; leafets lance- 
ohlong, 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. 
toxicodeii"dro>i, (g-y. J-Ju. Ip.) stem 
erect ; leaves ternate ; leafets broad, oval, 
entire or sinuate, dentate, sub pubescent 
beneath; flowers dioecious, 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, den.se panicles, diojcious ; 
clustei's of fruit covered with a purple, vel- 
vety down ; berries red, and very sour. 
Rocky hills. 
copalli'mim, (gum-copal tree, mountain 
Bumach, y-g. .Tu. ^ .) petioles winged, ap- 
pearing as if jointed ; leafets many-paired, 
oval-lanceolate, very entire, shining on the 
upper surface ; panicle sessile ; flowers 
dioecious. Fruit red, hairy, saiali. 
aramatf'icvm, (y. M. ^.) leafets sessile, 
ovate-rhomboid, dentate, pubescent be- 
neath ; flowers amentaceous, dioecious. 2-6 
f. Mountains. 
pu'mihis, (Ju. ^).) low; branches and 
petioles pubescent ; leafets oval, sharply 
toothed, tomentose beneath; fruit silky and 
downy. Poi.sonous. 1 f. S. 
laitri'num, very glabrous ; leaves ellipti- 
cal or elliptic-ovate, obtuse or emarginate, 
often 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 
minu-te 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. 
veryiicife'ra, (varnish or Japan sumach,) 
a native of India and .lapan, where it is 
much esteemed on accoutil of its gum, 
which forms the best varnish. 
RHYNCH0S"P0RA.3--1. (Ciiperoidecn.) [From 
runchos, the beak ol a bijd, and spora, a 
seed, the permanent style forming a beak to 
the seed.] 
nl"ba, (Ju. ZX-) spike coiyrab-fascicled ; 
culm triangular above; leaves setaceous; 
pericarp somewhat lenticular; bristlee 
about 10. 12-18 i. 
glomera'ta, (false bog rush, J. spikee 
clustered in corymbs, distant, by pairs: 
stem obtusely angled ; pericarp obovate. 
wedge-form, very glabrous. 12-18 i. 
rorijio'i-iis, (M. Z(.) stem and leaves se- 
taceous ; panicle loose, few-flowered ; seed 
obovate, rugose ; bristles as long as the 
seed. 1 f S. 
inexpnn"sa, (Ju.) stem obscurely 3-ang- 
led ; panicles remote, pendulous ; seed ob- 
long, compressed, rugose ; bri.stles scab- 
rous, twice as long as the seed. 2 f S. 
dis"lans, (Ju.) stem 3-angled ; flowers in 
distant clusters; seed lenticular, slightly 
furrowed ; bristles setaceous. 12-20 i. (S 
puncta'ta, 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 namo 
doubtful.] 
Jlo'ridMin, (wild black-currant, M. Ip .) un- 
armed ; leaves punctate both sides ; ra- 
cemes pendent ; calyx cylindric ; bracts 
longer than the pedicels. 3-4 f. 
trijlo't-um, (wiid gooseberry, g. M. 
spine sub-axillary ; leaves glabrous. 3-5 
lobed, gash-toothed ; peduncles sub-3-flov« • 
ered ; pedicels elongated ; bracts very 
short; petals spatulate, undulate; style 
hirsute, half 2 or 3-cleft, exsert, beny glab- 
rous, pale red. 3-4 f 
r.L'hrum, (currant, g. M. '^.) unarmed, 
racemes glabrous, nodding; corolla flat; 
petals obcordate ; leaves obtusely 5-lobed ; 
stem erect ; berries red. 2-4 feet. Ex. 
iii'grum, (black currant, g. M. Tp.) un- 
armed ; leaves punctate beneath ; racemes 
lax ; flowers bell form ; bracts shorter than 
the pedicels ; hemes black. 5-3 f. Ex. 
gros-nda'ria, (English gooseberry, g. M. 
^.) branches prickly; j«tioles hairy; 
bracts 2-leaved ; beny glabrous or hirsute. 
2-4 f. Ex. 
albiner'vium, (g-y. M. ^ .) leaves short, 
acutely lobed, smoothish ; nerves white , 
racemes recurved ; berries red, smooth. 
Iri'fidum, (y-g. M. 'F? .) leaves moderately 
lobed, smooth above, pubescent beneath , 
racemes lax. pubescent ; flowers rather 
flat ; segments of the calyx about 3-cleft , 
petals spatulate, obtuse ; berries hairy, red 
ri'gens, (mountain currant, M. ^.) un- 
armed ; branches straight ; leaves long- 
petioled, acutely lobed and dentate, reticu- 
late-rugose, pubescent beneath: racemes 
lax ; becoranig stiffly erect ; segments of 
the calyx obovate, obtuse; berries red, 
hispid. 
glnndulo'sum, (r-y.) branches pro.strate ; 
leaves lobed, smoothish ; younger ones 
pubescent; racemes sub-erect; petals del- 
toid ; bracts minute ; beriy hispid, most of 
the plaiit, particularly the calyx, coverec 
with glandular ha'rs. 2 3 f. 
