XXIV. ANACAKDIA v CF.iE : .RHU's. 



191 



3 ft. to 4 ft. with several upright stems, forming a small bush, from 

 the base of which proceed many prostrate runners. 

 R. T. 2 radicans Tor. & Gray. R. T. a vulgare Michx. ; R. T. /3 ra- 

 dicans Tor. (Bot. Mag. t. 1806. and N. Du Ham. 2. t.48., and our 

 Jigs. 288. and 289.) Climbing ; leaves more commonly entire, or 

 nearly so. The Rhus radicans 

 of the London gardens, readily 

 known from the preceding variety 

 by its trailing or climbing stem, 

 and by its entire leaflets. 



88. Rims Toxicodendron radicans, 



289. rtli (is Toxicod&idron radi 



^ 1 R, T. 3 microcarpon Tor. & Gray R. Toxicodendron 7 microcarpon 

 Michx. Leaves oval-oblong ; fruit smaller. 



These varieties, which have been hitherto, for the most part, treated as 

 belonging to two species, R. radicans and R. Toxicodendron, are com- 

 mon in many parts of North America; sometimes covering the surface of 

 the ground to a great extent, and at other times climbing to the top of the 

 highest trees, and penetrating the bark with their fibrous roots. The terri- 

 ble effects of their poison are frequent, and well authenticated. 



iii. Lobddium Dec. 



Sect. Char. Leaf of 3 leaflets, and palmately disposed on the tip of the com- 

 mon petiole, cut in a serrate manner; the teeth large. Flowers in a dense 

 catkin. Sexes polygamous. There are two-lobed glands under the ovary, 

 alternate with the stamens. Styles 3, short, distinct. Drupe rather com- 

 press ed, villose. Nut smooth. Aromatic shrubs. (Dec. Prod., ii. p. 72.) 



j* 8. R. AROMA'TICA Ait. The aromatic Rhus, or Sumach. 



Identification. Ait. Hort. Kew., 1. p. 367. ; Dec. Prod., 2. p 73. ; Don's Mill., 2. p. 75. ; Tor. and 

 Gray, 1. p. 219. 



Synonymies. R. suav&olens Ait. ; R. trifoliata Lodd. Cat. ; 

 R. canadensis Marsh.\ Lobadium aromaticum Raf.', Turpfm'a 

 Raf. ; Schmalzza Desv. ; Myrlca trifoliata Hort. ; Toxico- 

 dendron crenatum Mill. Diet. No. 5. 



Engravings. Turp. in An. du Mus., 5. p. 445. t. 30. ; and our 

 ng. 290. 



Spec. Char., fyc. Leaves pubescent when young 

 (at length coriaceous, and often glabrous) ; leaf- 

 lets sessile, rhomboid-ovate, unequally and in- 

 cisively toothed, the terminal one narrowed at 

 the base. (Tor. and Gray.) A small aromatic 

 shrub. Pennsylvania to Carolina and Georgia. 

 Height 1ft. to 4ft. Introd. in 1772. Flowers 

 small, yellow ; April and May. Fruit small, 

 light red ; ripe in September. 



Drunes the size of a small pea, light red, more 



fthtit aromatica. 



