STANDLEY — TREES AND SHRUBS OF MEXICO. 665 



broad. " Cuajiote '" (Michoacan, Morelos) ; "copaljiote" (Michoacan, More- 

 los) ; "cuajiote bianco" (Morelos, Queretaro) ; " xiote " {Sess6 & Mociiio). 



The plant is very poisonous, acting much like Rhus radicans. The gum which 

 exudes from the trunk is said to have purgative properties, and it is also 

 rubbed upon the skin to reduce the pain of scorpion stings. An excellent 

 figure of the plant, but without description, is given by HernJlndez,* under the 

 name " quauxiotl." 



3. Pseudosmodingium andrieuxii (Baill.) Engl. Bot. Jahrb. Engler 1: 419. 



1881. 



Smodingium andrieuxii Baill. Adansonia 11: 182. 1874. 



Described from southern Mexico, the locality not known. 



Leaflets elongate-lanceolate, sessile, 3 to 3.5 cm. long, sharply serrate, 

 glabrous ; panicles half as long as the leaves ; pedicels 6 to 7 mm. long ; fruit 

 6 mm. long, 10 mm. wide. 



4. Pseudosmodingium multifolium Rose, Contr. U. S. Nat. Herb. 5: 143. /. 6. 



1897. 

 Hidalgo, Puebla, and Oaxaca ; type from the city of Oaxaca. 

 Shrub or small tree, 2.5 to 6 meters high, glabrous; leaflets lanceolate, ses- 

 sile, 1.5 to 3 cm. long, serrate to entire; panicles equaling or shorter than the 

 leaves; fruit about 8 mm. long and 10 mm. broad. "Yaga-lache" (Oaxaca, 

 Zapotec, Reko). 



13. RHUS L. Sp. PI. 265. 1753. 



Shrubs or trees ; leaves alternate, simple, trifoliolate, or pinnate, the leaflets 

 entire, toothed, or lobed ; flowers small, polygamous, in large or small, axillary 

 and terminal panicles ; sepals 5, imbricate ; petals 5, imbricate ; stamens 5 ; 

 fruit a drupe, glabrous or pubescent. 



The genus is divided by some authors into several genera. Rhus coriaria 

 L., of the Mediterranean region, is much used for tanning and dyeing. R. 

 vernicifera DC. and R. succedanea L., of eastern Asia, exude from their stems 

 a substance known as lac, which furnishes the most durable varnish known. 



Rhus copallina L., a species of the eastern United States, has been reported 

 erroneously from Mexico. 

 Leaves simple. 



Fruit glabrous 1. R. laurina, 



Ftuit pubescent. 



Leaves with rounded lobes 12. R. trilobata. 



Leaves entire or with acute teeth. 



Leaves pilose beneath with short spreading hairs 2. R. mollis. 



Leaves glabrous beneath, or the pubescence of appressed hairs. 



Leaves acute, ovate, glabrous 3. R. ovata. 



Leaves obtuse or rounded at apex, not ovate. 

 Leaves mostly about as broad as long, densely covered beneath with 



minute white appressed hairs 4. R. lentii. 



Leaves much longer than broad, glabrous beneath or with sparse 



appressed hairs 5. R. integrifolia. 



Leaves compound. 

 Fruit glabrous. 



Leaflets usually 11 or 13 6. R. juglandifolia. 



Leaflets 3. 



Leaflets entire or dentate 7. R. radicans. 



Leaflets deeply lobed 8. R. eximia. 



* Thesaurus 406. 1651. 



