STANDLEY TEEES AND SHRUBS OF MEXICO. 647 



2. Dalembertia triangularis Muell. Arg. Linnaea 34: 218. 1865. 

 Type from Mexico, the locality not known. 



Leaves 3.5 to 4 cm. long, cordate at base, usually 3-lobate, densely pubescent 

 when young. 



3. Dalembertia hahniana Baill. Adansonia 1 1 : 125. 1873. 

 Known only from the type locality, Xocbicalco, Morelos. 



4. Dalembertia platanoides Baill. Ann. Sci. Nat. IV, 9: 197. 1858, 

 Known only from the type locality, mountain forests of Oaxaca. 



23. GYMNANTHES Swartz, Prodr. Veg. Ind. Occ. 95. 1788. 



Reference: Pax in Engl. Pflanzenreich lA'. 147^: 81-11. 1912, 

 Glabrous shrubs or trees ; leaves alternate, petiolate, entire or glandular- 

 denticulate, stipulate ; flowers usually monoecious, apetalous, spicate ; capsule 

 S-sulcate. 



Leaves mostly obovate, broadest above the middle; ovary stipitate. 



1. G. lucida. 

 Leaves broadest at or below the middle ; ovary sessile. 



Mature leaves firmly membranaceous 2. G. riparia. 



Mature leaves coriaceous. 



Leaves rather dull, not reticulate-veined^ 3, G. actinostemonoides. 



Leaves lustrous, prominently reticulate 4. G. longipes. 



1. Gymnanthes lucida Swartz, Pi'odr, Veg. Ind. Occ. 96. 1788. 

 Yucatan. Southern Florida and the West Indies. 



Shrub of tree, sometimes 10 meters high, witli a trunk 20 cm. in diameter, 

 tlie bark tliin, smootli or somewliat scaly, brown ; leaves 5 to 10 cm. long, 

 short-petiolate, obtuse, crenate-serrulate or entire ; capsule 7 to 9 mm. in 

 diameter ; wood hard, close-grained ; dark brown, taking a fine polish, the 

 specific gravity about 1.09. "Aite," " yaiti," " aceitillo " (Cuba). 



In the West Indies the wood is sometimes used for making canes. The milky 

 juice is said to be very poisonous ; if it falls upon the skin it produces in- 

 flammation or even ulceration. 



2. Gymnanthes riparia ( Schlecht. ) Klotzsch, Arch. Naturg. 7 : 182. 1841. 

 Excoecaria riparia Schlecht. Linnaea 7: 386. 1832. 



Gi/mnanthes sdiJeclitcndaliana Muell. Arg. Linnaea 33: 100. 1863. 



Veracruz ; type collected near Zoncuautla and .Talapa. 



Leaves elliptic-lanceolate, 5 to 10 cm. long, 2.5 to 3 cm. wide, shortly cuspidate- 

 acuminate, sliort-petiolate, obscurely crenate-serrulate; capsule 8 to 10 mm. 

 long. 



3. Gymnanthes actinostemoides Muell. Arg. Linnaea 32: 103. 1863. 

 Veracruz ; type from Zacuapan, 



Shrub or tree, sometimes 13 meters high ; leaves deciduous, elliptic-lanceolate 

 to ovate-oval, 4 to 9 cm. long, acute or acuminate, crenate-serrulate, 



4. Gymnanthes longipes Muell. Arg. Linnaea 34: 216. 1865. 

 Veracruz and San Luis PotosI (type locality). 



Leaves persistent, elliptic-lanceolate, cuspidate-acuminate, crenate-serrulate; 

 capsule 9 mm. long. 



The last three species are closely related and it is doubtful whether they 

 are distinct. 



