STANDLEY TREES AND SHRUBS OF MEXICO. 1115 



3. Chrysophylluin tepicense Standi., sp. nov. 



Type from Acaponeta, Tepic (Rose 1456; U. S. Nat. Herb. no. 300289). 



Bi-anchlets brownish-tomentulose ; leaves (very immature) on petioles 1.:") 

 to 2 cm. long, the blades oblong-elliptic, 3.5 to 4 cm. long, 1.7 to 2 cm. wide, 

 obtuse or rounded at base and apex, densely brown-tomentulose on both sur- 

 faces ; flowers borne on defoliate nodes of old branchlets, numerous in each 

 cluster, the pedicels 8 to 10 mm. long, puberulent; sepals 5, orbicular, 2 mm. 

 long, minutely sericeous ; corolla 3.5 mm. long, greenish, sparsely sericeous ; 

 fruit oval, about 3 cm. long and 2 cm. thick, 1-seeded ; seed brown, smooth, 

 about 2.2 cm. long, the hilum near the apex on the ventral side, 8 mm. long 

 and 3.5 mm. wide. 



2. DIPHOLIS A. DC. in DC. Prodr. 8: 188. 1844. 



1. Dipholis salicifolia (L.) A, DC. in DC. Prodr. 8: 188. 1844. 



Achras salicifolia L. Sp. PI. ed. 2. 470. 1762. 



Veracruz, Oaxaca, and Yucatan. West Indies and southern Florida. 



Slender unarmed tree, sometimes 16 meters high, with a trunk 50 cm. in 

 diameter, the bark scaly ; leaves slender-petiolate, oblong, lanceolate, or elliptic- 

 oblanceolate, 6 to 12 cm. long, acute or acuminate, thinly sericeous when young 

 but soon glabrate; flowers in dense, lateral or axillary fascicles, the pedicels 

 2 to 3 mm. long ; sepals sericeous, 1.5 mm. long ; fruit ovoid or subglobose, black, 

 6 to 8 mm. in diameter ; wood hard, strong, fine-grained, dark brown or reddish, 

 its specific gravity about 0.93. " Xac-chum " (Yucatan, Maya); "jocuraa," 

 " almendro silvestre," " jocuma blanca," " cuyri," "Carolina" (Cuba) ; " almen- 

 dr6n," " tabloncillo " (Porto Rico). 



Known in the British West Indies as " bustic," " wild cassada," and " cassada- 

 wood." 



3. BUMELIA Swartz, Prodr. Veg. Ind. Occ. 49. 1788. 



Shrubs or trees, usually armed with spines or with spinose branchlets; 

 leaves persistent or deciduous ; flowers small, green or white, fasciculate, lateral 

 or axillary ; .sepals 5, unequal ; corolla 5-lobate, with 2 lobelike appendages in 

 each sinus; staminodia petal-like; fruit 1-seeded. 



Leaves tomentose beneath with loose matted hairs. 



Fruit and ovary densely tomentose 1. B. eriocaipa. 



Fruit and ovary glabrous or nearly so, or the ovary pilose with straight 

 hairs. 



Fruit 7 to 10 mm. long; leaves attenuate at base 2. B. lanuginosa. 



Fruit about 2 cm. long ; leaves rounded or obtuse at base. 



Flowers sessile or subsessile 3. B. subsessiliflora. 



Flowers pedicellate. 



Leaves short-petiolate, rough and dull on the upper surface, the 



tomentum of the lower surface white or gray 4. B. altamiranoi. 



Leaves long-petiolate, smooth and lustrous above, the tomentum 



ferruginous 5. B. stenosperma. 



Leaves glabrous beneath or sericeous, the pubescence of straight closely ap- 

 pressed hairs. 

 Leaves obovate or oblanceolate, broadest above the midle, cuneate or attenu- 

 ate at base. 

 Pedicels glabrous 6. B. spiniflora. 



