STANDLEY TEEES AND SHRUBS OF MEXICO. 1139 



4. HESPERELAEA A. Graj% Proc. Amer. Acad. 11: 83. 1876. 

 The genus consists of a single species. 



1. Hesperelaea palmeri A. Gray, Proc. Amer. Acad. 11: 83. 1876. 



Known only from Guadalupe Island, Baja California. 



Small glabrous tree, leaves mostly opposite, oblong, 5 cm. long or more, 

 entire, coriaceous ; flowers perfect, yellow, in a terminal panicle, the pedicels 

 short, articulate ; sepals 4, deciduous ; petals 4, spatulate, about 12 mm. long, 

 clawed ; stamens 4 ; fruit drupaceous. 



5. FORESTIERA Poir. in Lam. Encycl. Suppl. 2: 664. 1811. 



Shrubs or small trees; leaves opposite, entire or serrulate, persistent or 

 <Jeciduous, often punctate ; flowers small, greenish, polygamous or dioecious, 

 fascicled or racemose, lateral ; calyx none or minute and 4-lobate ; corolla 

 none or of 1 or 2 small deciduous petals ; stamens 2 to 4 ; fruit a small drupe. 



Leaves with conspicuous pores beneath. 



Leaves oblong-ovate to rounded-ovate, 10 to 23 mm. wide 1. F. reticulata. 



Leaves linear to oblanceolate-oblong, 1.5 to 7 mm. wide. 



Leaves glabrous 2. F. angustifolia. 



Leaves pubescent on one or both surfaces. 



Leaves linear, glabrous beneath, puberulent above 3. F. puberula. 



Leaves oblong-oblanceolate or narrowly elliptic-oblong, densely pubescent 



beneath 4. F. durangensis. 



Leaves without pores beneath. 

 Leaves serrulate or crenulate. 



Leaves suborblcular, 7 to 12 mm. long, rounded at apex__5. F. rotundifolia. 

 Leaves ovate or rounded-ovate, 30 to 50 mm. long, acute or acuminate. 



6. F. racemosa. 

 Leaves entire. 



Leaves puberulent on the upper surface 7. F. tomentosa. 



Leaves glabrous on the upper surface. 



Leaves 4.5 to 6 cm. long 8. F, chiapensis. 



Leaves 1 to 3 cm. long. 



Leaves 2 to 3 cm. long ; fruit 12 to 15 mm. long 9. F. macrocarpa. 



Leaves mostly 1 to 2 cm. long; fruit 6 to 8 mm. long. 



10. F. phillyreoides. 



1, Forestiera reticulata Torr. U. S. & Mex. Bound. Bot. 167. 1859. 



No Mexican specimens have been seen, but the species has been collected 

 along the Rio Grande in Texas, and doubtless occurs on the Mexican side of 

 the river. Western Texas, the type collected near the mouth of the Pecos. 



Glabrous shrub or small tree ; leaves short-petiolate, 2 to 3 cm. long, acute 

 or obtuse, often serrulate, coriaceous, lustrous, paler beneath ; fruit globose- 

 obovoid, 7 mm. long. 



2. Forestiera angustifolia Torr. U. S. & Mex. Bound. Bot. 168. 1859. 

 Coaliuila, Nuevo Le6n, and Tamaulipas. Western Texas ; type collected 



near the Rio Grande. 



Densely branched, glabrous shrub, 1.5 to 4.5 meters high, the branchlets stiff ; 

 leaves subsessile, oblanceolate-oblong or linear-oblanceolate, 1 to 2.5 cm. long, 

 2 to 5 mm. wide, obtuse, bright green, the margins somewhat revolute; fruit 

 ■ovoid, black, about 6 mm. long. " Panalero " (Tamaulipas). 



The fruit is edible but not very palatable. 



