STANDLEY TKEES AND SHRUBS OF MEXICO. 1095 



Filaments pubescent. 



Ovary glabrous 11. A. minor. 



Ovary pubescent. 

 Leaves densely whitish-tomentose beneath ; filaments sparsely pubes- 

 cent 12. A. lanata. 



Leaves thinly tomentose or glabrate beneath ; filaments densely 

 pubescent. 

 Leaves mostly oblong-elliptic, less than 3 times as long as broad. 



13. A. caeciliana. 

 Leaves linear to narrowly oblong, more than 3 times as long as 



broad 14. A. polifolia. 



Fruit smooth ; leaves broad, usually ovate to oval, obtuse or rounded 

 at base. 

 Leaves M'hitish-tomentulose beneath, the margins revolute. 



15. A. bicolor. 

 Leaves not tomentulose beneath, the margins not revolute. 



Branchlets glabrous 16. A. glauca. 



Branchlets pubescent. 



Branchlets glandular-pilose 17. A. drupacea. 



Branchlets without glandular hairs. 



Pedicels and ovary pubescent 18. A. tomentosa. 



Pedicels and ovary glabrous 19. A. pungens. 



1. Arctostaphylos oppositifolia Parry, Proc. Davenport Acad. 4: 36. 1884. 

 Ornithostaphylos oppositifolia Small, N. Amer. Fl. 29: 101. 1914. 

 Mountains of northern Baja California. 



Shrub, 4.5 meters high or less ; leaves linear, 3 to 8 cm. long, obtuse or acute, 

 entire, the margins revolute, glabrous above, minutely whitish-pubescent be- 

 neath ; corolla 3 to 3.5 mm. long ; fruit 4 to 6 mm. in diameter, smooth. 



2. Arctostaphylos lucida (Small) Standi. 

 Comat'ostaphylis Ivcida Small, N. Amer. Fl. 29: 89. 1914. 

 Veracruz and Oaxaca ; type from Orizaba. 



Branches glabrous ; leaves oblong to narrowly elliptic, 3 to 7 cm. long, 

 acute, green, short-petiolate ; inflorescence closely pubescent. 



3. Arctostaphylos arguta (Zucc.) DC. Prodr. 7: 585. 1839. 

 Comarostaphylis arguta Zucc. Abh. Akad. Miinchen 2: 332. 1837. 

 Arhutus discolor Hook. Icon. PI. pL 29. 1837. 

 Arctostaphylos discolor DC. Prodr. 7: 585. 1839. 

 Arctostaphylos nitida Benth. PI. Hartw. 66. 1840. 



Arctostaphylos spinulosa Mart. & Gal. Bull. Acad. Brux. 9^: 537. 1842. 

 Jalisco to Mexico and Oaxaca. 



Shrub, 1.5 to 3 meters high, the branches glabrous ; leaves narrowly oblong or 

 oblong-lanceolate, to 15 cm. long, acute, sharply serrulate, bright green above ; 

 inflorescence finely pubescent or glabrate ; corolla 7 to 8 mm. long, white ; fruit 

 granular, dark red. " Garambullo " (Hidalgo, Mexico); "madrono borracho " 

 (Mexico), 



The fruit of this plant, or a decoction of the leaves, has narcotic properties. 

 Children have been severely poisoned by eating the fruit, and the plant has 

 been administered by Mexican physicians for the purpose of inducing sleep. 

 The fruit is more active when fresh, and it also has mild purgative properties. 

 The leaves are said to be astringent. 



