1092 CONTRIBUTIONS PROM THE NATIONAL HERBARIUM. 



This is very closely related to X. ferruginea (Walt.) Heller (Andy-omeda 

 ferruginea Walt.), of the southern United States, and has been referred to 

 that species by Hemsley and others. The Mexican plant differs only in its 

 slightly shorter capsules and it is doubtful whether it represents a distinct 

 species. 



4. GAULTHERIA L. Sp. PI. 395. 1753. 



Shrubs ; leaves alternate, persistent, usually toothed ; flowers racemose or 

 paniculate; calyx persistent, the lobes longer than the tube; corolla campanu- 

 late or urceolate, with 5 spreading or recurved lobes ; stamens 10, the anthers 

 2-awned, opening by terminal pores ; fruit berry-like, fleshy, the capsule inclosed 

 in the accrescent calyx. 



OauUheria procuml)ens L., of the United States and Canada, is the winter- 

 green or checkerberry, from which wintergreen oil is obtained. The fruits of 

 some of the species are edible. 



The names " ajocopaque," " axocopaque," and " axoeaponi " are applied in 

 southern Mexico to various species. The leaves are aromatic, and Hernslndez 

 relates that they were used for flavoring chocolate and other beverages, and 

 that they were laid among clothing to impart an agreeable odor and to keep 

 away insects. The branches are even now employed as perfume in churches. 

 The plants are said to have diuretic and laxative properties, and are used in 

 domestic medicine. 



Rachis of the inflorescence glabrous or ^uely pubescent, never hirsute or with 

 gland-tipped hairs ; rachis rarely with a few gland-tipped hairs, the corolla 

 then glabrous. 



Calyx lobes acute, about as wide as long 1. G. acuminata. 



Calyx lobes acuminate, much longer than wide. 



Branches of the inflorescence pubescent 2. Q. nitida. 



Branches of the inflorescence glabrous. 



Leaves green, serrulate 3. G. nelsonii. 



Leaves glaucous, entire 4. G. glaucifolia. 



Rachis of the inflorescence Klanduhir-pilose or hirsute ; corolla never glabrous. 

 Pubescence of the corolla of eglandular hairs. 



Leaves narr^owly oblong-lanceolate 5. G. angustifolia. 



Leaves ovate-oblong or ovate 6. G. parvifolia. 



Pubescence of the corolla of gland-tipped hairs. 



Filaments equaling or shorter than the anthers 7. G. trichocalycina. 



Filaments longer than the anthers. 



Leaf blades truncate to obtuse at base 8. G. hidalgensis. 



Leaf blades evidently cordate at base. 



Pedicels twice as long as the corollas or longer 9. G. longipes. 



Pedicels little if at all longer than the corollas. 

 Leaves ovate or ovate-oblong; branches sparsely short-hirsute or 



puberulent 10. G. odorata. 



Leaves mostly deltoid-ovate; branches densely hirsute. 



11, G. hirtiflora. 



1. Gaultheria acuminata Schlecht. & Cham. Linnaea 5: 126. 1830. 



Veracruz and Puebla; tj-pe from Cerro Coloi-ado, near Jalapa, Veracruz. 



Shrub, 1 to 2.5 meters high, the branches glabrous or puberulent; leaves 

 oblong to ovate, 4 to 11 cm. long, acuminate, rounded at base, serrulate; J 

 racemes 4 to 10 cm. long, finely pubescent; corolla 7 to 8 mm. long, \ 

 ■" Axocopaconi " ( Puebla ) , " array^n " ( Conzatti) . 



