i6 



THE PINES OF MEXICO. 



0. PINUS TEOCOTE Schl. & Cham. 



Pinus teocote Schlechtendal & Chamisso, Linnaea, v, 76 (1830); xii, 487 (1838). Lam- 

 bert, Gen. Pin. ed. 3, i, 37, t. 20 (1832). Loudon, Arb. et Frut. Brit, iv, 2266, fig. 2173 

 (1838); Encycl. Trees & Shrubs, 991, figs. 1851-4 (1842). Antoine, Die Conif. 35, t. 16, 

 fig. 3 (1840). Endlicher, Syn. Conif. 156 (1847). Parlatore, DC. Prodr: xvi, pt. 2, 396 

 (1868). Hemsley, Bot. Biol. Cent. Am. iii, 189 (1883). 



Leaves with persistent sheaths, in fascicles of 3, occasionally 4 or 5, 10-20 cm. long, 

 serrate, usually stout ; resin ducts medial, sometimes internal ; outer walls of endoderm cells 

 thickened ; fibro-vascular bundles two, approximate or contiguous. Conelets subterminal 

 rarely lateral, single or in pairs, pedunculate, their scales dull or sublustrous brown, trans- 

 versely keeled, armed with a small dorsal prickle. Cones usually not exceeding 6 or 7 cm. in 

 length, symmetrical or nearly so, ovate or narrow cylindrical, patulous or reflexed on short 

 peduncles, opening at maturity, soon deciduous, their scales numerous, small, tumid at the 

 margins, flat or slightly raised, rarely protuberant in the centre, more or less faintly carinate, 

 dull or sublustrous brown, the umbo often ashen-gray. Branchlets somewhat pruinose, pale 

 brown, the decurrent bases of the bracts deciduous ; bark at first thin, deciduous and red, but 

 accumulating in a few years and becoming rough and thick. Buds rather large, cylindrical, 

 more or less resinous ; male aments, when present, forming long cylindrical enlargements at 

 their base. 



A tree 20-30 m. high, with bright green leaves and compact habit growing at temperate 

 altitudes in the southern, central, western and north-eastern Sierras, associated with P. patnla 

 aud P. leiophylla. 



Nelson, $ (398546) Salazar, Mexico; 8 (396789) Jesus Maria, San Luis Potosi; 981 (398555) Yalalag, Oaxaca; 

 987 (398560) La Parada, Oaxaca; 2187 (398571) Sierra Madre, Chilpancingo, Guerrero; 2536 (398580) Miahua- 

 tlan, Oaxaca; 3778 (398601) Pinabete, Chiapas; 3933 (398603) Pinal des Amoles, Queretaro; 4500 (398614) 

 Miquihuana, Nuevo Leon. Goldman, 1 (303987) Valparaiso, Zacatecas; 960 (398795) Teopisca, Chiapas; 987 

 (398796) San Cristobal, Chiapas. Rose, 2130 (301035) Santa Teresa, Tepic, 2741 (301669-70) Plateado, Zaca- 

 tecas. Hose & Hough 4293 (346238) Las Vigas, Vera Cruz. Rose dv Painter, 7216 (450796) Ajusco, Mexico; 

 7014 (450583) Salazar, Mexico. Pringle, 1964, Monterey, Nuevo Leon; 6243, San Felipe, Oaxaca; 6800, Ajusco, 

 Mexico. Shaw, Honey, Hidalgo; Nanacamilpa, Tlaxcala; Contreras, Mexico. 



Fig. 



Cone of Nelson 4500 

 Leaves and conelet. 

 Leaf-section, magn. 30 diam. 

 Bud bearing male aments. 

 Tree at Las Vigas. 



