56 MISC. PUBLICATION 47 7, IT. S. DEPT. OF AGRICULTURE 



faces glabrate and somewhat lustrous, smooth (the type of Q. granu- 

 lata described as " granular-bullate above"); veins 10 or 12 on each 

 side with strong or evanescent intermediates, repeatedly branching 

 and anastomosing toward the margin, very slightly if at all raised 

 above, more prominent beneath, the reticulum scarcely raised above 

 and only minutely so beneath; petioles 4 to 7 mm. long, promi- 

 nently winged. Catkins? Fruit annual, rather small, solitary or 

 paired on a peduncle 2 to 5 mm. long; cups 10 to 15 mm. broad, 4 to 

 5 mm. high, hemispheric or shallower, round or somewhat constricted 

 at the base, scales ovate, the narrowed apex rounded, closely ap- 

 pressed, from puberulent glabrate and rather dull brown; acorns 10 

 to 15 mm. long, 9 to 13 mm. broad, ovoid, about one-fifth or less in- 

 cluded; abortive ovules apical. (See pis. 73 and 74.) 



Range: Mountains of Costa Rica (1,800 m.); tvpe from Volcan 

 Irazu {Oersted 5—3491). 



Quercus borucasana has somewhat the appearance of Q. eugeniae- 

 jolia in miniature, but its perfectly flat leaf margin adequately dis- 

 tinguishes it from that species as well as from Q. tonduzii. From the 

 latter species it also differs in having smaller leaves and shorter gla- 

 brate buds as well as smaller fruit. 



Specimens examined: 



COSTA RICA. — Prov. Alajuela: Santiago de San Ramon (Calera, Rio 

 Jesus), February 25. 1929, Brenes 6704 (F). Prov. San Jose: Cerro del Roble. 

 Copey, April 1898, Tonduz, 11827 (US [isotype of Q. wesmaeli]). Prov. Pun- 

 tarenas: Cuesta de las Borucas, January 1897, Pittier 10553 (US). 



29. Quercus tonduzii Seemen, Bui. Herb. Boissier 2. ser. 4: 656. 1904. 



Probably a large tree. Twigs 1.5 to 2.5 mm. thick, coarsely fluted, 

 glabrate and brown or gray with few large raised but inconspicuous 

 lenticels. Buds about 3 or 4 mm. long, ovoid or subfusiform, 

 pubescent about the apex, light brown or buff; the stipules caducous. 

 Leaves evergreen, thick and rather hard, 5 to usually 7 or 9 cm. long, 

 2 to 3 or 3.5 cm. broad, narrowly elliptic or oblong to oblanceolate, 

 apex short-acuminate, base narrowly cimeate to obtusely cuneate, 

 entire, margins rather prominently thickened and re volute, crisped, 

 upper surface glabrous and shiny, lower surface glabrous or with 

 scant tufts of stellate hairs in the axils of the veins, rather dull; veins 

 about 9 to 11 on each side and with evanescent intermediates, repeat- 

 edly branching and anastomosing toward the margin, very slightly 

 impressed and raised within the grooves above, rather prominent 

 beneath, the reticulum minutely raised above, slightly more promi- 

 nent beneath; petioles 4 to 10 mm. long, rather prominently winged, 

 from sparsely pubescent becoming glabrate and very dark reddish 

 brown or black. Catkins? Fruit annual, medium-sized, solitary or 

 paired on a peduncle up to 10 mm. long and 4 mm. thick; cups about 

 14 to 18 mm. broad, 7 or 8 mm. high, goblet-shaped, the base some- 

 what constricted, scales lance-ovate, the much narrowed apex rounded 

 and rather loosely appressed, sparsely pubescent or the apex glabrate 

 and shiny light brown; acorns about 18 mm. long, 18 mm. broad, 

 ovoid or round but finally small-pointed, glabrate and light brown, 

 abortive ovules apical. (See pi. 75.) 



Range: Mountains of central Costa Rica (2,200 m.). 



