THE PINES OF MEXICO. 



15 



8. PINUS LUMHOLTZII ROBINS. & Fern. 



PiXUS Lumhoi/tzii Robinson & Fernald, Proc. Am. Acad, xxx, 122 (1804). Shaw, Sar- 

 gent Trees & Shrubs, ii, 55, t. 125 ( 1907). 



Pinus patula Seemann, Bot. Voy. Herald, 336 (not Schl. & Cham.), (1852-7). Hemsley, 

 Bot. Biol. Cent. Am. iii, 189 (in part), (1883). 



Leaves with deciduous sheaths, in fascicles of 3, 20-30 cm. long, pendent, serrate ; resin ducts 

 medial and internal, rarely external, the two fibro-vascular bundles contiguous, often merged 

 in one. Conelets subterminal, occasionally also lateral on young trees, long-pedunculate, 

 ovate-conical, their lustrous brown scales terminating in a small prickle deciduous from the 

 mature cone. Cones usually about 5, rarely 7 cm. long, symmetrical, pendent on slender 

 more or less curved peduncles, ovate-conical, opening at maturity, early deciduous, their apo- 

 physes tumid at the margins, the general surface flat, of a dull pale brown color, the umbo 

 large and conspicuous. Branchlets lustrous chestnut-brown, more or less pruinose, the decur- 

 rent bases of the bracts deciduous ; the bark at first thin, separating in deciduous scales, be- 

 coming in a few years coarse and thick. Buds of the same lustrous chestnut-brown as the 

 branchlets and fascicle-sheaths. 



A broad round-headed tree with slender subpendent branchlets and bright green, absolutely 

 pendent leaves, growing on the western and north western Sierras from south western Jalisco 

 to the latitude of the City of Chihuahua. 



Hartman, 54i(type), Coloradas, Chihuahua. Nelson, 4112 (398609) Mascota, Jalisco. Rose, 2194 (301104) 

 Santa Teresa, Tepic ; 2989 (301944, 302738) west of Bolanos in Tepic ; 3083 (302044) Bolanos to Guadalajara, 

 Jalisco; 3586(302563) Mesquitec, Zacatecas. Pringle, 10014, Etzatlan, Jalisco. Shaw, Etzatlan & Tula, Jalisco. 



Specimens of this beautiful weeping Pine were first gathered by Seemann No. 1961, and are in the Herbarium 

 of the Royal Gardens at Kew, where they were referred to P. patula, the weeping Pine of eastern Mexico^but P.Lum- 

 holtzii, in addition to its deciduous sheath, bears much smaller cones than P. patula. The leaves of P. patula 

 droop in a graceful curve, those of P. Lumho/tzii are so absolutely pendent that they seem to spring from the 

 underside only of the branchlets. The specimens from which the species received its name were collected by Dr. 

 Hartman, who accompanied Lumholtz on his scientific expedition to Mexico. This Pine was first found near 

 Tutuaca, directly west of the City of Chihuahua, and is reported by travellers to grow in south-western Jalisco, 

 which is probably near the southern limit of its range. 



PLATE VIII. 



.Fig. 1. Cone of Rose 2989. Fig. 4. Branch and pendent leaves, 1-2 nat. size. 



" 2. Branch, conelets and cone. " 5. Tree at Tula. 



" 3. Leaf-section, magn. 30 diam. 



