826 CONTRIBUTION'S FROM THE NATIONAL HERBARIUM. 



flowers 2 to 2.5 cm. wide ; sepals 4, the bractlets 4 to 8 ; petals 4, yellow ; fruit 

 subglobose, large. " Chimup " (Yucatan). 



Used in YucatTm as a remedy for syphilitic affections. 



6. Clusia parvicapsula Vesque, Epharm. 3: 10. pi. SJf. 1892. 

 Veracruz. Colombia and Peru. 



Leaves obovate, usually 2 to 3.5 cm. wide, cuneate at base, the nerves ascend- 

 ing at a very acute angle; cymes 3 to 6-flowered; sepals 4, rounded; fruit 

 about 1.5 cm. in diameter, globose. 



7, Clusia mexicana Vesque, Epharm. 3: 9. pi. 2^, 25. 1892. 



Veracruz and Oaxaca ; type from Cordoba, Veracruz. Probably also in Cen- 

 tral America. 



Leaves oblanceolate or oblong-oblanceolate, 6 to 15 cm. long, acute at base, 

 the lateral nerves ascending at a very acute angle; cymes with 3 or several 

 flowers; bractlets 2 or 4 ; sepals 4; petals 4, white; fruit subglobose, 5 or 6- 

 celled, 3 to 4 cm. in diameter. " Zapotillo " (Oaxaca). 



2. CALOPHYLLUM L. Sp. PI. 513. 1753. 

 Glabrous trees ; leaves coriaceous, lustrous, the lateral nerves very numerous 

 and close; flowers cymose-paniculate or racemose, axillary, small, polygamous; 

 sepals 4; petals 2 to 8 or more; stamens numerous; fruit drupaceous; 1-seeded. 



Petioles 22 to 32 mm. long; leaves 10 to 16 cm. long 1. C. rekoi. 



Petioles 8 to 10 mm. long; leaves 6.5 to 8.5 cm. long 2. C. chiapense. 



1. Calophyllum rekoi Standi. Contr. U. S. Nat. Herb. 20: 192. 1919. 



Known only from the type locality, Cerro Espino, Oaxaca, altitude 600 meters. 



Tree, 20 to 25 meters high ; leaves elliptic or elliptic-oblong, 4 to 6 cm. wide, 

 acute at base and apex ; racemes about 7-flowered, 2.4 to 3.5 cm. long, puberu- 

 lent; flowers white, fragrant, 8 mm. broad; stamens 7 to 12 ; fruit globose, 4 

 to 5 cm. iu diameter. " CimarrOn," " cedro cimarron." 



The tree is valued because of its excellent wood, which resembles mahogany. 

 When cut, the branches yield a yellow sticky sap. 



2. Calophyllum chiapense Standi. Contr. U. S. Nat. Herb. 20: 192. 1919. 

 Known only from the type locality, Los Pinos, near Tonald, Chiapas. 

 Leaves elliptic or obovate-elliptic, 2 to 4 cm. wide, obtuse or acutish, acute 



at base ; racemes mostly 5-flowered, 2.5 cm. long, obscurely piiberulent ; flowers 

 8 to 10 mm. broad ; stamens numerous. " Leche de Maria." 

 The wood is used for making cart wheels. 



3. MAMMEA L. Sp. PI. 512. 1753. 

 Only the following species is known. 



1. Mammea americana L. Sp. PI. 512. 1753. 



1 Mammea emarginata DC. Prodr. 1: 561. 1824. 



Cultivated in Veracruz and Tabasco, and perhaps elsewhere. West Indies 

 and northern South America ; cultivated in many tropical regions. 



Large tree, 12 to 20 meters high ; leaves short-petiolate, oval, elliptic, or 

 elliptic-obovate, 10 to 15 cm. long or larger, rounded at apex, rounded or 

 obtuse at base, leathery, lustrous, with numerous parallel lateral nerves; 

 flowers polygamous, fragrant, axillary, solitai'y or fasciculate, pedicellate; 

 calyx closed at first, rupturing into 2 sepals ; petals usually 5, oblong, about 

 2 cm. long, white; stamens numerous; fruit baccate, 2-celled, 8 to 20 cm. in 

 diameter, subglobose, brownish, the flesh yellow or reddish ; seeds 1 to 4, ellip- 

 soid, 4.5 to 7 cm. long. " Zapote mamey," " zapote nino," " zapote de Santo 



