STANDLEY TREES AND SHRUBS OF MEXICO. 1039 



4. Myrtus berlandiereana Berg, Linnaea 27: 403. 1854. 



Described from Mexico, tlie locality not known, but probably in Veracruz, 

 Tamaulipas, or San Luis Potosi. 



Branchlets puberulent ; leaves short-petiolate, crowded, rigid, oblong-lanceo- 

 late, 1 to 2 cm. long, 4 to G mm. wide, acute, obtuse at base, pubescent beneatJv 

 wlien young ; pedicels 12 mm. long, the bractlets subulate, 1.5 ram. long ; calyx 

 lobes 5, ciliolate, 2 mm. long ; petals oval. 



5. Myrtus montana Benth. PI. Hartw. 61. 1840. 

 Ugivi montana Berg, Linnaea 27: 392. 1854. 



Jlountains of Oaxaca ; type from Monte Pelado, altitude 2,100 meters. 



Densely branched shrub, the branchlets covered with short stout white hairs : 

 leaves short-petiolate, oblong to elliptic, 8 to 13 mm. long, acute or obtuse, acute 

 at base, coriaceous, strigose beneath along the costa or glabrous, pale be- 

 neath, the margins revolute ; pedicels recurved, 1 to 1.5 cm. long, the bractlets 

 linear, 2 to 4 mm. long; calyx lobes 5, 1.5 mm. long. 



Mexican material has been referred to M. friedrichsthnlii (Berg) Donn. 

 Smith, a species occurring in Guatemala, which is probably not distinct from 

 M. montana. The latter name, however, is the older one. 



6. EUGENIA L. Sp. PI. 470. 1753. 



Shrubs or trees ; inflorescence racemose, cymose, corymbose, or fasciculate, 

 or the flowers rarely solitary ; calyx tube globose or turbinate, the limb usually 

 4-lobate, the lobes imbricate, commonly suborbicular ; petals 4, spreading, 

 white ; ovary 2-celled ; fruit drupaceous or baccate, containing 1 or few seeds. 



This is the largest genus of the family Myrtaceae, including probably 500 

 species in tropical America. The species are most abundant in the West Indies 

 and South America. In Mexico and Central America there are comparatively 

 few species, but it is likely that the number will be greatly increased by 

 further exploration. Probably the number represented among the Mexican 

 collections available for study is greater than in the following list. Several 

 plants of which specimens have been seen probably belong to distinct species, 

 but it is not advisable to attempt to describe them until more ample material 

 has been collected. 



The fruit of most of the species is edible, but the amount of flesh is usually 

 scant, and the seeds large. Eugenia uniflora L., the Surinam cherry, known 

 in Brazil as " pitanga," is cultivated in Florida, the West Indies, and South 

 America for its edible fruit. This is as much as 2.5 cm. in diameter, deep 

 crimson, juicy, and of good flavor. It is known in Cuba as " cerezo de Cayena " 

 and in El Salvador as " guinda." 



Calyx about 1.5 cm. wide 1. E. jam.bos. 



Calyx 1 cm. wide or usually much less. 



Leaves shallowly cordate at base 2. E. trunciflora. 



Leaves obtuse or acute at base or rarely rounded. 



Flowers in cymes, the central flower sessile, or the pedicels sometimes 

 solitary or fasciculate in the leaf axils, the inflorescence then with- 

 out a rachls. 



Leaves long-acuminate; pedicels filiform 3. E. conzattii. 



Leaves rounded to short-acuminate at apex ; pedicels stout. 



Flowers in cymes 4. E. fragrans. 



Flowers fasciculate 5. E. rhombea. 



Flowers never in cymes, usually in short or elongate racemes, most or all 

 of the inflorescences with an evident rachis. 



