STANDLEY— TREES AND SHRUBS OF MEXICO. 305 



DOUBTFUL SPECIES. 



Cappakis furfuracea Ruiz & Pav. ; DC. Prodr. 1: 252. 1824. Described fi'oni 

 Mexico. 



4. ATAMISQUEA Miers, Trav. Chile 2: 529. 1826. 



1. Atamisquea emarginata Miers, Trav. Chile 2: 529. 1826. 



Dry plains and hillsides, Baja California and Sonora. Argentina. 



Densely branched shrub, 1 to 6 meters high, ill-scented, with brittle branches ; 

 leaves linear or oblong-linear, 1 to 3.5 cm. long, short-petiolate, emarginate at 

 the apex, green on the upper surface, scaly beneath; flowers small, solitary or 

 fasciculate, sweet-scented ; sepals and petals each 4 ; fertile stamens 6 ; fruit 

 oval or subglobose, about 8 mm. long. 



5. CRATAEVA L. Sp. PI. 444. 1753. 



Shrubs or trees; leaves deciduous, very long-petiolate, the leaflets 3; flowers 

 racemose or corymbose, the stamens long-exserted ; petals 4 ; stamens 8 to 20 ; 

 fruit baccate, large, long-stipitate. 



Leaflets glabrous 1. C. tapia. 



Leaflets puberulent beneath 2. C. palmeri. 



1. Crataevla tapia L. Sp. PI. 444. 1753. 



Tamaulipas to Sinaloa and southward nearly throughout the lower parts of 

 Mexico. West Indies, Central America, and South America. 



Glabrous tree, usually 6 to 9 meters high, but sometimes as much as 18 

 meters ; bark grayish brown ; leaflets ovate, elliptic, or oval, 5.5 to 15 cm. 

 long, thin, acute or acuminate, paler beneath ; flowers green or purplish ; fruit 

 subglobose, 2.5 to 5.5 cm. in diameter. " Zapotillo amarillo " (Colima) ; " Tres 

 Marias" (Yucatan); " xkolocmax " (Yucatan, Maya); " cascar6n " (Ta- 

 basco); "palo de guaco" (Panama); " manzana de playa " (Nicaragua); 

 " zorrocloco " or "sorrocloco" (Colombia); "toco" (Trinidad, Venezuela). 



The bark has a disagreeable odor ; it is reputed to have tonic, stomachic, anti- 

 dysenteric, and febrifuge properties. The roots are very acrid, and their juice 

 applied to the skin produces blisters. The leaves are sometimes used as 

 poultices. 



It may be that C. gynandra L. (if that species is distinct from C. tapia) also 

 occurs in Mexico, but the specimens seen afford no convincing evidence to that 

 effect. 



2. Crataeva palmeri Rose, Contr. U. S. Nat. Herb. 1: 301. 1895. 

 Sinaloa and Durango to Guerrero ; type from Armeria, Colima. 



Shrub or small tree, with purplish flowers, the stamens long-exserted ; fruit 

 3.5 to 5 cm. long. 

 Very similar to C. tapia except for the presence of pubescence. 



6. SETCHELLANTHUS T. S. Brandeg. Univ. Calif. Publ. Bot. 3: 378. 1909. 

 1. Setchellanthus caeruleus T. S. Brandeg. Univ. Calif. Publ. Bot. 3: 378. 1909. 



Known only from the type locality, Coscomate, Oaxaca. 



Shrub ; leaves ovate to suborbicular, 1 cm. long or shorter, subsessile, obtuse, 

 silvery-strigose ; flowers solitary, blue, about 2 cm, long ; stamens shorter than 

 the sepals. 



7. FORCHAMMERIA Liebm. Nat. For. Kjobenhavn Vid. Medd. 1853: 93. 1854. 

 Trees, glabrous or pubescent ; leaves simple or compound, petiolate ; flowers 



small, racemose or paniculate ; stamens numerous. 



Leaves trifoliolate 1. F, trifoliata. 



