110 DESCRIPTIONS OF THE SHRUBS 



* Leaves deciduous, composed of many (7-31) blades (or twice-pin- 



nate). (B.) 

 B. Stem of leaves winged between the blades ; fruit red. (C.) 



C. Blades (9-21) about entire, smooth above ; berries hairy. 

 MOUNTAIN SUMACH (115) Rhus copallina. 



C. Blades (9-21) finely toothed, brown-hairy beneath. JAPAN- 

 SUMACH Rhus semialata (R. Osbe"ckii). 



C. Blades (11-15) coarsely toothed, leaf-stem hairy. EUROPEAN 

 or ELM-LEAVED SUMACH (116) Rhus Coriaria. 



B. Stem of leaves without wings between the blades. (D.) 



D. Blades (7-15) without notches, smooth on both sides ; berries 

 white ; plants very poisonous to the touch. (B.) 



E. Berries small, pea-like ; in moist ground. POISON SUMACH 



(119) Rhus Ve'rnix (R, venenata). 



E. Berries large cherry-like ; from Asia. LAC SUMACH 



- Rhus succedanea. 



D. Blades (11-13) sharply serrate ; not poisonous ; berries red ; 

 stem smooth. (F. ) 



F. Blades regularly serrate ; shrub to 15 feet. SMOOTH SUMACH 



(120) Rhus glabra. 



F. Blades deeply and irregularly cut ; shrub to 8 feet. CUT- 

 LEAVED SUMACH (121) Rhus glabra laciniata. 



D. Blades hairy beneath ; berries red. (G.) 



G. Stem velvety-hairy ; tall, 10-30 feet. (H.) 



H. Blades (11-31) regularly notched. STAGHORN SUMACH 



(114) Rhus typhina (R. hfrta). 

 H. Blades deeply and irregularly cut. FERX-LEAVED SUMACH 



(122) Rhus typhina laciniata. 



G. Stem less velvety; blades 9-13; low, nearly procumbent; 

 poisonous; fruit red ; southern. DWARF SUMACH Rhus 

 pumila. 



G. Stem slightly hairy when young ; tree-like, 20-30 feet high; 

 hardy only South ; very poisonous ; from Japan. "VARNISH 

 or LACQUER TREE Rhus vernicffera. 



* Leaves deciduous, simple, rounded at tip ; fruit generally abortive 



and plume- or smoke-like. C6tinus. (I.) 

 I. 10-15 feet high. SMOKE BUSH (123) or VENICE SUMACH Rhus 



Cotinus (Cotinns C6tinus). 



I. 20-40 feet high. WILD SMOKE-TREE or CHITTAM WOOD Rhus 

 Cotinoides (Cotinus Cotinoides). 



* Leaves evergreen, usually simple (occasionally with 3 blades), entire - 



i il-ed ; low, 2-8 feet high ; hardy only in the extreme South ; from 

 California. ( J. ) 



