26 MISC. PUBLICATION 4 7 7, U. S. DEPT. OF AGRICULTURE 



Q. leiopkylla A. DC, from which it is distinguished by its deciduous 

 leaves with longer petioles. From the less closely related Q. pan- 

 amandinaea it is readily separated by its smaller toothed leaves not 

 acuminate and by its densely fulvous-tomentose cup scales. 



Specimens examined: 



MEXICO. — Chiapas: Cerro del Boqneron, September 1913, Pvrpus 6997 (F, 

 US [isotvpes]): Mt. Ovando, April 9-12, 1937, Matuda 1823 (AA, DeP, Mi); 

 Matuda 1824 (AA, Mi, US, USX A). 



EL SALVADOR. — Dept. Ahuachapan: Cerro de Apaneca, 1928, Calderon 

 2429 (F [a mixed collection consisting mostly of Q. skinneri]). 



8. Quercus panamandinaea sp. nov. 7 



Large tree to 25 m. tall. Twigs 1 to scarcely 2 mm. thick, fluted, 

 from stellate-pubescent glabrate and brown with few rather inconspic- 

 uous light lenticels. Buds 2 to 2.5 mm. long, ovoid, subacute, glabrous, 

 straw-colored; stipules caducous. Leaves evergreen, thin but hard, 

 10 to 15 cm. long, 4 to 6 cm. broad, broadly lanceolate to oblanceolate, 

 long-acuminate, the bases cuneate to rounded or apparently truncate 

 and then minutely cuneate, entire or the margins slightly wavy but 

 scarcely toothed, somewhat crisped, minutely revolute, both surfaces 

 glabrous or sparsely stellate-pubescent at the base of the midrib above, 

 dully shining; veins 12 to usually 15 or 18 on each side with evanescent 

 intermediates, branching (often doubly) and anastomosing toward 

 the margin, impressed above but slightly raised (as is the reticulum) 

 within the grooves, quite prominent beneath, the reticulum less so; 

 petioles about 4 mm. long (excluding the cuneately decurrent lamina), 

 1.5 to 3 mm. thick, glabrous or sparingly stellate-pubescent, dark 

 reddish brown. Staminate catkins? Pistillate catkins up to 1.5 cm. 

 long, 2- or 3-flowered, the peduncle glabrous. Fruit annual, solitary, in 

 twos, or in threes, peduncles about 1 cm. long, glabrous; cups about 

 25 mm. broad, 15 mm. high, cup-shaped, the scales ovate to ovate- 

 lanceolate, basally thickened and densely gray-tomentose, the thin 

 loose apices glabrous and reddish brown; acorns about 25 mm. 

 long, 16 to 18 mm. broad, ovoid, glabrous and light brown, the coty- 

 ledons decidedly unequal with the radicle lateral or equal with the 

 radicle apical. (See pis. 21 and 22.) 



Range: Known only from upper Panama. 



Quercus panamandinaea (named for Panama and Andinae, a series 

 in Erythrobalanus which it superficially resembles quite closely) is a 

 remarkable endemic species. It is here referred to the series Lan- 

 cvfoliae in part because of its leaf characters and its sometimes unequal 

 cotyledons, but that disposition is not at all conclusive. The species 

 is amply distinguished from all others by the nature of its cup scales 

 and (from the other species in the Lancijoliae) by its large, short- 

 petioled. and long-acuminate leaves. 



Specimens examined: 



PAXAMA. — Prov. Chiriqui: Casita Alta to Copete, Julv 10, 1940, Woodson 

 and Schery 860 (MBG [type], USX A). 



7 Quercus panamandinaea sp. nov. — Arbor grandis, ramuli 1-2 mm. crassi glabrati, gemlmae 2-2.5 mm 

 longae ovoideae glabrae flavae, stipulae caducae, folia sempervirentia 10-15 cm. longa 4-6 cm. lata oblanceolata 

 vel late lanceolata longe acuminata glabra, venis utrinque 12-18 ramosis et anastomosantibus, petioli 4 mm. 

 longi, fructus annuus pedunculatus, cupula 25 mm. lata 15 mm. alta, squamae ad basin crassae tomentosae 

 ad apicem chartaceae laxe appressae. 



