1124 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



5. Sideroxylon angustifolium Standi., sp. nov. 



Sonora and Sinaloa ; type from La Peonia, Sinaloa, altitude 610 meters 

 (Monies <£• Salazar 884; U. S. Nat. Herb. no. 1035645). 



Tree, 15 to 18 meters high, the trunk 40 to 60 cm. in diameter ; leaves 

 oblong or oblong-oblanceolate, 13 to 18 cm. long, 4 to 6 cm. wide, acute or 

 obtuse, acute or subobtuse at base, brownish-pubescent on both surfaces or 

 finally glabrate above; petioles 2 to 2.5 cm. long; flowers fasciculate on old 

 wood, the pedicels 7 to 9 mm. long, pubescent ; sepals 3 mm. long, brown- 

 sericeous; ovary 5-lobate, glabrous. "Tempisque," " tempixtle " (S'naloa). 



The bark is used in Sinaloa for curdling milk. 



One collection from Oaxaca (Nelson 2345) probably represents the same 

 species, although in this the leaves are rounded or very obtuse at apex. The 

 fruit is subglobose, 1-seeded, and about 2.5 cm. long. 



135. DIOSPYRACEAE. Persimmon Family. 



Refeeence: Hiern, A monograph of Ebenaceae, Trans. Cambridge Phil. Soc. 

 12: 27-300. 1873. 



Shrubs or trees ; leaves alternate, entire, deciduous or persistent, estipulate ; 

 flowers small, white or green, solitary or cymose, axillary, unisexual; calyx 

 inferior, the segments connate, persistent and accrescent In fruit; corolla 

 urceolate, campanulate, or salverform ; stamens 3 to many, inserted at the base 

 of the corolla ; ovary 2 to 16-celled, the ovules usually solitary ; fruit baccate, 

 large, containing several large seeds. 



Flowers 3-parted 1. MABA. 



Flowers 4 to 6-parted 2. DIOSPYROS. 



1. MABA Forst. Char. Gen. 121. 1776. 



Shrubs or trees; flowers dioecious, 3-parted, solitary or in small cymes, axil- 

 lary; calyx 3-lobate, accrescent; corolla tubular or campanulate; stamens 3 

 to many in the staminate flower, usually about 9, glabrous : ovary 3 or 6-celled, 

 usually hairy ; fruit globose or ovoid, 1 to 6-celled, containing 1 to 6 seeds. 



Leaves densely and softly grayish-pubescent beneath 1. M. albens. 



Leaves glabrate beneath, or the pubescence sparse or, if dense, brownish. 

 Leaves acute or acuminate. 



Leaves hirtellous; fruiting calyx deeply lobate 2. M. acapulcensis. 



Leaves sparsely appressed-pilosulous or glabrate; fruiting calyx shallowly 



lobate 3. M. verae-crucis. 



I^eaves rounded or very obtuse at apex. 



Leaves 5.5 to 6 cm. wide, oblong-oval 4. M. rekoi. 



Leaves 3 cm. wide or narrower. 

 Leaves oblong-oblanceolate, 5.5 to 8 cm. long, glabrate. 



5. M. salicifolia. 

 Leaves oblong to obovate or elliptic, usually less than 6 cm. long, densely 

 pubescent beneath, at least when young. 



Leaves hirtellous beneath, mostly 3 to 6 cm. long 6. M. latifolia. 



Leaves appressed-pilosulous beneath, mostly 1 to 2 cm. long. 



7. M. intricata. 



1. Maba albens (Presl) Hiern. Trans. Cambridge Phil. Soc. 12: 126. 1873. 



Diospyros albens Presl, Ilel. Haenk. 2: 62. 1836. 



<lnerrero and Oaxaca; type from Acapulco, Guerrero. 



Leaves short-petiolate, oblong-obovate or oblong, 3 to 7 cm. long, obtuse or 

 rounded at apex, acute at base, densely pubescent on both surfaces ; staminate 



