RHUS 



RHUS 



2953 



flattened, Hin. long, dark red. Spring. Calif. S.S. 

 3:109. 



2. ovata, Wats. Shrub, to 10 ft.: Ivs. short-stalked, 

 ovate, acute or acuminate, entire or rarely spinosely 

 toothed, 2-3 in. long: fls. in dense spikes ^in. long, 

 sometimes crowded into terminal panicles, fight yel- 

 low: fr. ovate, flattened, dark red, J^in. long. Spring. 

 S. Calif., Ariz. 



3. laurina, Xutt. (LUhriealaurina, Walp.). Aromatic, 

 glabrous shrub: branchlets purplish: Ivs. oblong-ovate 

 to lanceolate, acute and mucronulate, rounded at the 

 base, entire, 2-3 in. long; petioles J^-1J^ in. long: fls. 

 in dense panicles, to 4 in. long, greenish white: 



fr. ovoid, beaked, Kin. long, whitish, with a 

 waxy covering. Summer. S. and Low. Calif. 

 Will thrive in the hottest and driest places; 

 very handsome with its dark green glossy 

 foliage. 



4. m611is, HBK. Tall shrub: branchlets 

 tomentose: Ivs. oval or ovate, rounded and _ 

 mucronate at the apex, rounded or subcordate ?>' 

 at the base, pubescent above, 



more densely so beneath, 1 J^-2J^ 

 in. long; petiole very short: fls. in 

 dense pubescent panicles, about 1 

 in. long: fr. sub- 

 globose, pilose. 

 Mex. 



5. laevigata, 

 Linn. Glabrous 

 shrub or tree: 

 petiole 2-3 in. 

 long; Ifts. sessile 

 or short-stalked, 



ovate, acuminate, cuneate at 

 the base, entire or sometimes 

 with 2-6 teeth, lustrous above, 

 2-3 in. long: panicles loose, axillary 

 and terminal; fls. minute, whitish, 

 slender-pedicelled: fr. globose, gla- 

 brous, lustrous, about J^in. across. S. 

 Afr. Sim, For. Fl. Cape Colony 45. 



6. lucida, Linn. Glabrous shrub, 

 to 6 ft.: branchlets sometimes pu- 

 berulous: petiole J^ 3^in. long, narrowly 

 winged; Ifts. sessile, obovate, obtuse or 

 emarginate, entire, rarely slightly toothed, 

 lustrous, distinctly veined, 1-2J^ in, long: panicles 

 terminal and axillary, about as long as Ivs. : fr. globose, 

 glabrous, about K m - across. S. Afr. 



7. trilobata, Xutt. (Schmdlizia trilobata, Small). 

 SKUXK-BUSH. ILL-SCEXTED SUMAC. Offensive-scented 

 shrub, to 3. rarely to 6 ft. high: Ivs. petioled, 1-2 in. 

 long; Ifts. sessile or nearly so, oval or obovate, obtuse, 

 crenately toothed, puberulous while young, soon gla- 

 brous, the terminal one usually 3-lobed: fls. greenish, in 

 clustered spikes before the Ivs.: fr. subglobose, red, 

 hairy, J^in. across. Mo. to Wash., Calif., and Texas. 

 B.B. (ed. 2) 2:483. 



8. canadensis, Marsh. (SchmdUzia aromdtica, Desv. 

 R. aromdtica. Ait. SchmdUzia crenata, Greene). 

 Aromatic shrub, to 3 ft., with ascending or diffuse 

 branches: Ivs. petioled, 2-4 in. long; Ifts. pubescent, the 

 terminal one ovate or obovate, acute or acuminate, 

 cuneate at the base; the lateral Ifts. ovate, unequal at 

 the base: fls. and frs. like those of the preceding species, 

 but fls. yellow and frs. slightly larger. Ont. and Vt. 

 to Minn, and south to Fla. and La. A good coyer 

 plant for dry rocky banks; conspicuous in early spring 

 by its yellow fls. B.B. (ed. 2) 2:482. 



9. diversfloba, Torr. & Gray. Poisox OAK. Upright 

 shrub or sometimes climbing by rootlets: branchlets 

 pubescent: Ifts. ovate, elliptic or obovate, usually 

 obtuse, coarsely crenate-serrate or 3-lobed, sparingly 



pubescent while young, 1-3 in. long: fls. yellowish 

 green, in peduncled panicles: fr. white, K~/4 m - across, 

 falling soon after maturity. Brit. Col. to Calif. 

 Poisonous like the following and not to be recommended 

 for planting. 



10. Toricodendrpn, Linn. (Toxicodendrum vulgare, 

 Mill. R. radicans, Linn. R. Toxicodendron var. radicans, 

 Torr.). POISON IVY. POISON OAK. Fig. 3018, p. 2678. 

 Suberect and scrambling over walls and fences or high- 

 climbing by aerial rootlets : Ifts. ovate or rhombic, acute 

 or short-acuminate, entire or sparingly dentate or sinu- 

 ate, more or less pubescent beneath, 1-6 in. long: fls. 

 greenish, in loose axillary panicles 1-3 in. long: fr. 



whitish, subglobose, Kin. across, remaining 

 on the plant during the winter. Spring. Nova 

 Scotia to Fla. west to Minn., Neb., and Ark. 

 Em. 577. It colors beautifully scarlet and 

 orange in autumn, but is very poisonous to 

 many and therefore should not be planted 

 near places where persons are 

 likely to come in contact with 

 it; in such places it should 

 rather be exstirpated. It is, 

 however, very difficult to eradi- 

 cate, for it spreads by suckers 

 and each piece of root left in 

 the ground sprouts again. 

 The plant described above is 

 by some called 

 R. radicans, 

 Linn., and the 

 name R. Toxi- 

 codendron is re- 

 stricted to an 

 upright shrubby 

 form with pubes- 

 cent crenate or 

 crenately lobed 

 Ivs., native to 

 the S. Atlantic 

 states, also 

 called R. querci- 

 folia, Steud.; 

 also several 

 other closely related species have been distinguished. 



11. vernix, Linn. (R. venenata, DC.). Poisox SUMAC. 

 Poisox ELDER. Fig. 3019, p. 2678. Shrub or tree, to 20 

 ft.: Ifts. 7-13, oval to oblong, acuminate, cuneate at 

 base, undulate, glabrous or slightly pubescent beneath 

 usually 2-4 in. long: fls. greenish, in loose axillary 

 panicles 3-8 in. long: fr. subglobose, gray, flattened, 

 Kin. across. Swamps, R. I., Ont., and Minn., south to 

 Fla. and La. S.S. 3:107, 108. Em. 575. Very poison- 

 ous: foliage turns to a brilliant scarlet hi autumn. 



12. verniciflua, Stokes (R. vernicifera, DC. R. 

 vernix, Thunb.). VARNISH-TREE. LACQUER TREE. 

 Tree, to 60 ft.: Ifts. usually 11-15, short-stalked, ovate- 

 oblong to oblong-lanceolate, acuminate; rounded or 

 broadly cuneate at the base, entire, more or less pubes- 

 cent beneath while young, 3-6 in. long: fls. whitish, in 

 slender axillary panicles about half as long as the Ivs. : fr. 

 broader than long, compressed, straw-yellow, smooth, 

 Min. broad. May. Japan, China, Himalayas. S.I.F. 

 1:57. I.T. 6:201. Gn. 34, p. 158. From this tree the 

 kcquer used for the highly polished woodenware is 

 obtained in Japan and China; the fr. yields a fatty oil. 

 The tree is poisonous like the preceding species. 



13. succedanea, Linn. WAX-TREE. Shrub or small 

 tree, to 30 ft. : Ifts. 9-15, short-stalked, elliptic-oblong to 

 oblong-lanceolate, long-acuminate, broadly cuneate at 

 the base, entire, lustrous above, usually grayish green or 

 glaucescent beneath, quite glabrous, usually with 15-20 

 pairs of veins prominent beneath, 2-4 in. long: fls. 

 yellow-green, in axillary slender panicles: fr. broader 

 than high, compressed, whitish, J^-Min. broad. May. 



3397. Rhus javanica. ( X Ji) 



