RHODORA— RISES. 



155 



fall from it like rain. The leaves are large 

 and silvery beneath. 



chrysaii"lhnm, a dwarf ppeciea, with yel- 

 low flowers. Ex. 

 RHODO'RA. 10—1. (Rhododcndra.) 



cn7inden"iih, (false honeysuckle, p. M. 

 Tp.) leaves alternate, o%'al, entire, pubescent- 

 glaucous beneath ; Hewers in tciTninai um- 

 bels or clusters, appearing before the leaves. 

 Mountain bogs. 2 f. 

 RHUS. 5—3. (Terebinlacca.) [From rco, to 



flow, so called becau.se it was supposed to 



be useful in stopping haemorrhages.] 



gla'brum, (sleek-sumach, g. r. Ju. ^ .) 

 branches, petioles, and leaves, glabrous ; 

 leaves pinnate, many-paired ; leafets lance- 

 oblong, .seirate, whitish beneath ; fruit silky. 

 The leaves are used for tanning morocco 

 leather. Berries red and sour. 6 12 f 



ve7-"ru.x, (poison-sumach, y-g. J-Ju. fp.) 

 very smooth ; leaves pinnate ; leafets in 

 many pairs, oval, abruptly acuminate, en- 

 tire ; panicles loose ; flowers dia?ciou3. A 

 small tree. 



toxicode7i"dron, (g-y. J-Ju. '^.) stem 

 erect ; leaves temate ; leafets broad, oval, 

 entire or sinuate, dentate, subpube.scent 

 beneath ; flowers dioecious, in sessile, axil- 

 lary racemes. 1-3 f. Ya.v.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 sen-ate, 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. 



copaUi'mim, (gum-copal tree, mountain 

 sumach, y-g. Jn. ^ .) 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, small. 



aromaficum, (y. M. f).) leafets sessile, 

 ovate-rhomboid, dentate, pubescent be- 

 neath ; flowers amentaceous, dioecious. 2-6 

 f. Mountains. 



pu'milm, (Ju. ^.) low; branches and 

 petioles pubescent ; leafets oval, sharply 

 toothed, toraentose beneath ; fruit silky and 

 downy. Poisonous. 1 f. S. 



laxiri'num, very glabrous ; leaves ellipti- 

 cal or elliptic-ovate, obtuse or emarginate, 

 often mucronate ; panicles crowded ; sta- 

 mens 5 ; filaments very short. California. 



co'tinus, (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 fonns the best varnish. 

 RIIYNCH0S"P0RA.3-1. (Cyperoidea.) [From 



■mnclios, tho beak of a biid, and spora, a 



seed, the permanent style forming a beak to 



the seed.] 



aV'ba, (Ju. IS) spike corymb-fascicled ; 

 culm triangular above; leaves setaceous; 

 pericarp somewhat lenticular; bristiee 

 about 10. 12-18 1. 



glomera'ta, (false bog-rush, J. 2^.) spikee 

 clustered in corymbs, distant, by pairs : 

 stem obtusely angled ; pericarp obovate, 

 wedge-form, very glabrous. 12-18 i. 



rnrijlo'rus, (M. 2^.) stem and leaves se- 

 taceous ; panicle loose, few-flowered ; seed 

 obovate, rugose ; bristles as long as the 

 seed. 1 f. »S'. 



inexpan"sa, (Ju.) stem obscurely 3-ang- 

 led ; panicles remote, pendulous ; seed ob- 

 long, compressed, rugose ; brLstles scab- 

 rous, twice as long as the seed. 2 f S. 



dis"ta7is, (Ju.) stem 3-angled ; flowers in 

 di.stant clusters; seed lenticular, slightly 

 furrowed ; bristles setaceous. 12-20 i. (S 



p7incta'ta, fascicles lateral and terminal, 

 cTustered 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 namp 



doubtful.] 



Jlo'i-idum, (wild black-currant, M. ^ .) un- 

 armed ; leaves punctate both sides ; ra- 

 cemes pendent ; calyx cylindric ; bracts 

 longer than the pedicels. 3-4 f 



ti-ifio'rnm, (wild gooseberrj', 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, hklf 2 or 3-cIeft, exsert, berry glab- 

 rous, pale red. 3-4 f. 



r7i'hriim, (entrant, g. M. '^.) unarmed, 

 racemes glabrous, nodding; corolla flat; 

 petals obcordate ; leaves obtu.sely 5-lobcd ; 

 stem erect ; berries red. 2-4 feet. Ex. 



7ii'gruin, (black currant, g. M. ^.) un- 

 armed ; leaves punctate beneath; racemes 

 lax ; flowers bell form ; bracts shorter than 

 the pedicels ; berries black. 5-3 f Ex. 



grosfiida'ria, (Eiiglish goosebeny, g. M. 

 ^.) branches prickly; petioles hairy; 

 bracts 2-leaved ; berry glabrous or hirsute. 

 2-4 f. Ex. 



albi/ie7-'viitm, (g-y. M. 1^ .) leaves short, 

 acutely lobed, smoothish ; nerves white , 

 racemes recurved ; berries red, smooth. 



ii-i'fidinn, (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 ; berries hairy, red 



rige7is, (mountain currant, M. Tp .) un- 

 armed ; branches straight ; leaves long- 

 petioled, acutely lobed and dentate, reticu- 

 late-rugose, pubescent beneath; racemes 

 lax ; becommg stifily erect ; segments of 

 the calyx obovate, obtuse ; berries red, 

 hispid. 



gland7ilo's7im, (r-y.) branches prostrate'; 

 leaves lobed, smoothish ; younger ones 

 pubescent ; racemes sub-erect ; petals deh 

 toid ; bracts minute ; berry hispid, most of 

 the plant, particularly the calyx, covered 

 with glandular hairs. 2-3 f. 



