STANDLEY TREES AND SHRUBS OF MEXICO. 739 



(Sinaloa) ; •' cuaulahuac " (Veracruz); " jolocm bianco" (Tabasco); " cuau- 

 lote," " xolotzin " (various parts of Mexico); " burillo falso " (Nicaragua); 

 "calague," "calagua," " calagual " (El Salvador); " tolotzin," "catena" 

 (Tabasco); "copal" (Veracruz); " majahua " (Jalisco); " yaga-guiehi " 

 (Oaxaca, Zapotec, Reko). 



The wood of these trees is soft and light, and is employed for floats and 

 bottle stoppers. In Brazil paper has been made from it. In Mexico a kind 

 of paper was formerly made from the bark by beating it into thin sheets. The 

 bark of young branches is tough and is often used as a substitute for cordage, 

 or sometimes coarse rope and twine is made from it. The pulverized bark, or 

 a decoction of it, is sometimes applied to sores. 



Fruit borne on a long bristly stipe. 



Leaf blades with stipule-like appendages at base 1, H. appendiculatus. 



Leaf blades not appendaged. 



Leaves densely tomentose or stellate-pilose beneath, with loose spreading 



hairs 2. H. tomentosus. 



Leaves glabrate beneath, sparsely pilose, or covered with a minute close 

 tomentum. 



Leaf blades as broad as long or nearly so 3. H. tigrinus.' 



Leaf blades much longer than broad. 



Leaves glabrous or nearly so 4. H. glabrescens.* 



Leaves covered beneath with minute stellate hairs. 



5. H. donnell-smitliii. 

 Fruit sessile or nearly so. 



Leaves covered beneath with a pale close minute tomentum. 



Leaves about as broad as long 6. H. velutinus. 



Leaves much longer than broad 7. H. pallidus. 



Leaves glabrous beneath or with pubescence of coarse spreading hairs. 



Calyx lobes not appendaged 8. H. terebinthaceus. 



Calyx lobes appendaged at apex. 

 Leaves glabrous or glabrate beneath, or with scattered stellate hairs. 



Body of the fruit elliptic-oblong 9. H. glanduliferus. 



Body of the fruit suborbicular. 



Leaves about as broad as long, shallowly lobed 3. H. tigrinus. 



Leaves much longer than broad, not lobed. 



Leaves cordate at base 10. H. polyandrus. 



Leaves rounded or cuneate at base 11. H. occidentalis. 



Leaves densely stellate-tomentose beneath. 



Leaves nearly or quite as broad as long, usually lobed. 



12. H. reticulatus. 

 Leaves about twice as broad as long, not lobed. 



Sepals 4.5 mm. long, with erect appendages 13. H. attenuatus. 



Sepals 2 to 3 mm. long, with spreading appendages. 



14. H. palmeri. 



1. Heliocarpus appendiculatus Turcz. Bull. Soc. Nat. Moscou 31*: 226. 1858. 



San Luis PotosT, Veracruz, Chiapas, and Tabasco ; type from Teapa, Tabasco. 



Shrub or tree, sometimes 7.5 meters high ; leaves ovate to orbicular, 10 to 20 

 cm. long, acute or acuminate, usually not lobed, dentate, stellate-tomentose be- 

 neath ; sepals 5 to 6 mm. long, not appendaged; fruit (including bristles) 10 to 

 14 mm. wide, very hairy. " Majagua " (Chiapas) ; " burio " (Costa Rica). 



* The fruit is not known in these species. 



