THE CENTRAL AMERICAN SPECIES OF QUERCUS 55 



distinguished by its characteristically acuminate and aristate-tipped 

 leaves. From Q. hondurensis, which also has acuminate leaves, 

 Q. eugeniaefolia may be separated by its smaller. leaves and glabrate 

 twigs. 



Specimens examined: 



COSTA RICA. — Prov. Alajuela: Palmira, region of Zarcero, February 24, 

 1938, A. Smith 198 (F) ; A. Smith 370 (F, MBG); Cerro Palmira, June 23, 1941, 

 A. Smith 2828 (USNA) ; Palmira, July 1, 1941, A. Smith 2877 (USNA). Prov. 

 Heredia: Cerros de Zurqui, northeast of San Isidro, March 3, 1926, Standley 

 and Valerio 50588 (F, US); Standley and Valerio 50707 (US). Prov. San Jose: 

 between Aserri and Tarbaca, February 12, 1924, Standley 34181 (US); vicinity of 

 Santa Maria de Dota, December 14-26, 1925, Standley 41611 (F, US); Laguna de 

 la Chonta, northeast of Santa Maria de Dota, December 18, 1925, Standley 42220 

 (F, US); near Quebradillas, north of Santa Maria de Dota, December 24, 1925, 

 Standley 42876, 42988, and 43046 (F, US). Prov. Cartago: El Mufieco on Rio 

 Navarro, March 6-7, 1926, Standley and Torres 50921 (F, US) ; Cuesta de Tarrazu, 

 April 1893, Tonduz 7871 (US [3] [a mixed collection; another duplicate is Q. 

 corrugata]) ; near Agua Caliente, February 26, 1928, Stork 1042 (F) ; Cerro Jucosal, 

 March 3, 1928, Stork 1130 (F) ; Santa Clara Hills, June 16, 1928, Stork 2591 (F); 

 El Tablazo, April 1932, Valerio 179 (F). 



PANAMA. — Prov. Chiriqui: Casita Alta, Volcan Chiriqui, June 28-July 2, 

 1938, Woodson, Allen, and Seibert 868 (USNA) ; between Finca Lerida and Pefia 

 Blanca, July 9, 1940, Woodson and Schery 318 (USNA). 



Series Borucasanae TreL, Mem. Nat. Acad. Sci. 20: 160. 1924. 



Series Benthamiae TreL, Mem. Nat. Acad. Sci. 20: 146. 1924 



(pro parte — not the type). 

 Series Consociatae TreL, Mem. Nat. Acad. Sci. 20: 172. 1924 



(pro parte — not the type). 



Trees (?) ; twigs rather slender, glabrate; buds 1 to 3 mm. long, 

 sparsely pubescent or glabrate; leaves evergreen or subevergreen, 

 thick and hard, rather small, elliptic or oblong, acute at both ends or 

 the base obtuse, entire, glabrate or sparingly pubescent in sheltered 

 spots; petioles less than 1 cm. long, winged; fruit annual, medium- 

 sized or small, short-peduncled; the cups at most deeply saucer-shaped; 

 acorns ovoid, one-fourth or less included; abortive ovules apical. 



Range: Mountains of Costa Rica. 



Includes: Q. borucasana TreL (type) and Q. tonduzii Seemen. 



28. Quercus borucasana TreL, Mem. Nat. Acad. Sci. 20: 161. pi. 315. 

 1924. 



Quercus granulata Liebm., Overs. Danske Vidensk. Selsk. For- 



handl. 1854: 186. 1854. Not Q. granulata Raf., Alsog. 



Amer. 21. 1838. 

 Q. pittieri Wesmael ex Seemen, Bui. Herb. Boissier 2. ser. 4: 



652. 1904 (nom. nud.). 

 Q. wesmaeli TreL, Mem. Nat. Acad. Sci. 20: 172. pi. 844. 



1924 (pro max. parte). 



Probably a small tree. Twigs 1.5 to 2.5 mm. thick, fluted, gla- 

 brate and dark reddish brown with few large but inconspicuous 

 lenticels, becoming gray the second season. Buds 1.5 to 2 mm. long, 

 ovoid or round, obtuse, glabrous and dark brown; the stipules cadu- 

 cous. Leaves deciduous(?), thick and rather hard, about 3 to 7 cm. 

 long, 1.25 to 1.75 cm. broad, elliptic or oblong to narrowly lanceolate, 

 apex acute and usually aristate-tipped, base cuneate, entire, margins 

 slightly thickened but scarcely revolute, seldom crisped, both sur- 



