320 I'J-ANT NAMKS AX1> SYNONYMS 



b. R. chrysjlntheinum Pall. Siberia. Yellow Eliododendron^ 

 Siberian Rose, Snow Rose; (rer. Sibirisclie Alpenrose. Leaves 

 diuretic, narcotic, (cj R. ferru^iiieiiin h., Europe, Dwaif 

 Rose-bay, has similar properties. 



d. R. luaximuni L. Canada to Georgia. Great Laurel, -Rose- 

 bay, Wild Rose-bay, Rose Laurel, Big Laurel, Big-leaf Laurel, 

 Deer Laurel, Horse or Mountain Laurel, Cow- plant. Spoon- 

 hutch. Properties of (b). Wood used for engraving. 



1729. RH0D6RA, L. Rhodora, Lamb-kill. Ericaceae^ 

 From Greek rhodm, a "rose". Syn. Rhododendron, in part. 



A shrub with deciduous leaves. One species, (a) R, Cana- 

 densis L. (Rhododendron Rhodora J. F. Gmel. ). Canada 

 and northeastern U. S. 



1730. RHlJS, L. 1753. Sumac (Sumach), etc. Anacardiaceae. 



The ancient Greek name. Syn. Toxicodendron, Mill. 1759; 

 Metopium, Styphonia, in part. Shrubs or trees with odd-pin- 

 nate or trifoliate leaves, many poisonous. About 120 species,, 

 warmer regions, especially of S. Africa; 19 in U. S. 



a. R, aromatica Ait. (T. crenatum Mill., R. Canadensis Marsh, 



not Mill. ). Canada and eastern U. S. Fragrant Sumac, 

 Sweet-sfented Sumac. Root hark astringent, a remedy in 

 eneuresis. 



b. R. Coriaria L. Europe. European Sumac, Tanner's Sumac;: 



Ger. Sumach, Schmack. 



c. R. glabra L. (T. glabra Mill.). British America, south to 



Florida and Arizona. Smooth Sumac, Mountain or Upland 

 Sumac, Scarlet or Sleek Sumac, Pennsylvania or White Sumac, 

 Senhalanac, Sumach, Shoe-make^, Vinegar tree. Fruit; Ehus 

 glalDra, U. S. P., astringent, acidulous. 



«1. R. hirta (L.) Sudw. (Datisca hirta L. 1753, R. typhina L. 

 1760). Canada and eastern U. S. Staghorn Sumac, Staghorn, 

 American or Hairy Sumac, Virginia or Velvet Sumac, Vinegar 

 tree. Properties of (c). The smaller (e) R. copallina L. of 

 the eastern U. S. is called Dwaif, Black, Upland or Mountain 

 Sumac. The Californian (f) R. integrifolia B. & H. (S.. 

 integrifolia Nutt. ) is called Mahogany*. Leaves and hark of 

 most species of Rhus are used in tanning. 



g. R. Metopium L. (M. Linnaja Engelm.,R. oxymetopium Griseb. ). 

 Florida to West Indies and S. America. Mountain Manchineel, 

 Coral Sumac, Bum-wood. Poison- wood. Properties of (h). 

 Gummy exudate, hog gum, doctoi-'s gum, emeto-cathariic. 



h. R. rddicans L. (R. Toxicodendron Auct. (Kew), not L., T. 

 vulgare Mill. ). British America south to Florida, Arkansas 

 and Utah. Poison Ivy, Climbing or Three-leaved Ivy, Climath, 

 Climbing or Trailing Sumac, Black Mercury, MarkeryJ, Mark- 

 weed. Picry, Poison Oak, Poison-vine; Ger. Giftsumac, Gift- 

 baum; Fr. Sumach veneneux; Sp. Zuraaque venenoso. Fre^h 

 leaves; Rhus Toxicodendron, U. S. P., Folia toxicodendri; 

 diaphoretic, diuretic, stimulant to nervous system. The Poison 



