2954 



RHUS 



RHUS 



Japan, China, Himalayas. S.I.F. 1:57. R.H. 1863, 

 p. 130. From the fr. of this tree a wax-like substance 

 chiefly used for making candles is expressed in Japan. 

 The tree is poisonous. 



14. Potaninii, Maxim. (R. sinica, Koehne, not Diels). 

 Shrub or tree, to 25 ft. : branchlets minutely puberulous: 

 rachis terete or sometimes slightly winged between the 



3398. Rhus typhina. Staghorn sumac. 



upper If is.; Ifts. 5-7, short-stalked, ovate or elliptic- 

 ovate, acuminate, rounded or broadly cuneate at the 

 base, entire, on young plants usually coarsely toothed, 

 pubescent beneath on the veins, 2-4 in. long: fls. 

 whitish, in terminal panicles: fr. dark red, densely 

 hairy, in pendulous panicles to 5 in. long. May, June. 

 Cent, and W. China. M.D. 1910, p. 103, and G.M. 

 51: 419; 52: 721 (as R. sinica). 



15. punjabensis, Stew. Tree, to 40 ft.: branchlets 

 short-pubescent: Ifts. short-stalked, oblong or ovate- 

 oblong, acuminate, rounded or subcordate at the base, 

 slightly pubescent beneath, at least on the veins, entire, 

 3-5 in. long: fls. whitish, in broadly pyramidal panicle 

 with spreading branches: fr. suborbicular, red, tomen- 

 tose, K-Kin. broad. Himalayas. Var. sinica, Rehd. & 

 Wilson (R. sinica, Diels). Upper part of the rachis 

 narrowly winged; Ifts. 7-11, on young plants sometimes 

 17 and wings more pronounced and often continuing 

 down the whole length of the rachis : fruiting panicle 5-8 

 in. long and 4-6 in. broad. June, July; fr. in Sept. Cent, 

 and W. China. This and the preceding species are 

 strong-growing plants with handsome foliage; very 

 attractive in autumn with their large pendulous 

 panicles of dark red fr. 



16. coriaria, Linn. Shrub, to 20 ft.: petiole short; 

 rachis winged, at least in the upper part, villous; Ifts. 

 9-15, oval to oblong, obtuse or acutish, coarsely 

 toothed, pubescent beneath, lJ^-2 in. long: fls. green- 

 ish, in a rather loose terminal panicle: fr. crimson, 

 densely pubescent. July. Medit. region, W. Asia. 

 H.W. 3, p. 33. The Ivs. are used for tanning leather. 



17. javanica, Linn. (R. semialdta, Murr. R. Osbeckii, 

 Decne. R. semialata, var. Osbeckii, DC.). Fig. 3397. 

 Shrub or flat-headed tree, to 25 ft.: rachis and often 

 the petiole winged, pubescent; Ifts. 7-13, short-stalked 

 or nearly sessile, ovate to ovate-oblong, acute or short- 

 acuminate, rounded or broadly cuneate at the base, 

 coarsely crenate-serrate, brownish pubescent beneath, 

 2-6 in. long: fls. creamy white, in large and broad pani- 

 cles, to 12 in. long: fr. subglobose, compressed, red, 

 densely pubescent. Aug., Sept.; fr. in Oct. Japan, 

 China, 8. Asia. S.I.F. 1:58. G.W. 1:99. M.D.o! 

 1899 : 166. Valuable for its late blooming season and the 

 most showy of the sumacs in bloom. Var. Roxburgh!!, 

 Rehd. & Wilson (R. semialdta var. Rdxburghii, DC.). 

 Rachis not or very slightly winged. Himalayas. 

 Tender, rarely cult. 



18. copallina, Linn. (Schmdltzia copdllina, Small). 

 BLACK SUMAC. MOUNTAIN or SHINING SUMAC. Shrub 



or tree, occasionally to 30 ft.: rachis winged, pubescent; 

 Ifts. 9-21, oblong-ovate to oblong-lanceolate, entire or 

 few-toothed toward the apex, glabrous and lustrous 

 above, usually pubescent beneath, lJ^-4 in. long: fls. 

 greenish, in dense terminal panicles: fr. compressed, 

 hairy, crimson. July, Aug.: fr. Sept., Oct. Maine and 

 Ont. to Minn., south to Fla and Texas. S.S. 3:104, 

 105. Var. lanceolata, Gray. Lvs. narrowly lanceo- 

 late, often falcate. Texas. S.S. 3 : 106. Succeeds well 

 in dry soil; handsome with its dark green glossy foliage. 



19. Michauxii, Sarg. (R. pumila, Michx. Schmdltzia 

 Michauxii, Small). Low shrub with decumbent sts. 

 about 1 ft. high, densely pubescent: Ifts. 9-15, oval to 

 oblong-ovate, acuminate, coarsely serrate, 2-4 in. long: 

 fls. greenish, in panicles 4-8 in. long: fr. compressed, 

 deep red, pubescent. Spring. N. C. to Ga. G.F. 8:405. 

 Poisonous. 



20. typhina, Linn. (R. hirta, Sudw. Schmdltzia hirta, 

 Small). STAGHORN SUMAC. Fig. 3398. Shrub or 

 tree, to 30 ft.: branchlets densely velvety-hairy: Ifts. 

 11-31, oblong-lanceolate, pointed, serrate, glaucescent 

 beneath, 2-5 in. long: fls. greenish, in dense terminal 

 panicles: fr. crimson, hairy. June, July; fr. Aug., Sept. 

 Em. 571. 8.8.3:102,103. Gn. 54, p. 505. G.F. 2:343 

 (adapted in Fig. 3398). Que. to Ont., south to Ga., 

 Ind., and Iowa. Var. laciniata, Wood. Lfts. and 

 bracts deeply and laciniately toothed and the infl. 

 sometimes partly transformed into contorted bracts. 

 Var. dissecta, Rehd. (var. laciniata, Hort.). Fig. 3399. 

 Lfts. pinnately dissected. M.D.G. 1900:211. G.M. 

 53:827. R.H. 1907, pp. 10, 11. A very handsome 

 form with finely cut foliage. R. typhina filicina, 

 Sprenger, is probably not different. The staghorn 

 sumac grows in the driest soils and is a very desirable 

 plant on account of its brilliant fall coloring, which in 

 dry localities begins to show in Aug., and with its crim- 

 son fr.-clusters persisting through the winter. Trained 

 in tree form it is very picturesque, but is short-lived. 



21. glabra, Linn. (Schmdltzia gldbra, Small). SMOOTH 

 SUMAC. Fig. 3400. Shrub, to 15 ft. with glabrous and 

 glaucous branches: Ifts. 11-31, lanceolate-oblong, 

 pointed, serrate, glaucous beneath, 2-5 in. long: fls. 

 green, in dense panicles, to 10 in. long: fr. scarlet, 

 viscid-pubescent. July; fr. in Aug., Sept. Em. 572. 

 G.W. 3, p. 145. F.E. 30:681. Var. laciniata, Carr. 

 Lfts. pinnately dissected. F.E. 31:875. G. 1:533. 

 R.H. 1863, p. 7. V. 10:101. This variety with its 

 deeply and finely cut Ivs. is very handsome; it is ten- 

 derer than the cut-lvd. form of the preceding species 

 and does not grow so high. 



R. cotinoides, Nutt,=Cotinus americana. R. Cotinus, Linn.= 

 Cotinus Coggygria. R. Delavayi, Franch. Allied to R. succedanca. 

 Glabrous shrub: Ifts. 5-7, elliptic, 1-2 in. long, light green beneath: 



3399. Young plants of Rhus typhina var. dissecta. 



