the Arboretum et Fruticetum Britanniaun. 1 29 



the seeds in the others, which are of a dark grey or brownish colour, are 

 without wings, and of an egg-shape reversed, about 6 or 7 lines long, and 

 about 4 lines thick at the upper end, but diminishing in size towards the 

 lower extremity, which is obtuse. Schiede named this interesting. species in 

 honour of Paul de la Llave, who well deserves the honour, for what he has done 

 for the flora of Mexico." (Linncea, vol. xii. p. 489.) A notice to the same 

 effect as the above, and also by Professor von Schlechtendal, is given in the 

 Garten Zeitung, No. 37., for 1838, p. 293. ; and M. Otto, in the letter already 

 referred to, in which he explains the origin of the error which he inadvertently 

 led us to commit, kindly sent us a coloured drawing of the cone, of which 

 fig. 23. is an engraving of the same size : a, cone ; b, a seed. 



$ Leaves Five in a Tuft. 



~Pinus Montezumze, Linncea, vol. xii. p. 489. ; Arb. Brit. p. 2272. 



P. leiophylla, Linnaea, vol. xii. p. 490.; Arb. Brit. p. 2273. 



P. oocdrpa Schiede ; Linnsea, vol. xii. p. 491.; not in Arb. Brit. — " Schiede 

 found this tree, from 30 ft. to 40 ft. high, growing abundantly between Ario 

 and the volcanic mountain Jorullo ; and not only in the temperate, but also 

 in the warm, regions, where it grows in company with the fan palm. The 

 leaves, which are from 8 in. to 1 1 in. long, and the single short cones, broad 

 below and pointed above, characterise this tree ; which evidently comes the 

 nearest to P. Montezuma, with which, also, it nearly corresponds in the 

 scales of the branches. When the cone is closed, the enlargement of the 

 scales appears sometimes tolerably elevated and equal-sided, and sometimes of 

 an irregular four-cornered or many-cornered shape. Elevated bands run to 

 the middle point from the corners, so that the whole end of the scale looks 

 slightly pyramidal. The largest cone which we saw, and which had just begun 

 to burst open, was about 2^ in. long, and in breadth below If in. The leaves 

 are tolerably flat on the upper side, with dotted parallel lines ; and a strongly 

 keeled, two furrowed, projecting midrib below, with small cartilaginous teeth, 

 not very close together, at the edges,- which renders them somewhat sharp." 

 (Linntza, vol. xii. p. 492.) The cones of a pine received from Mexico, and 

 distributed by the Horticultural Society under the name of the " Ocote pine 

 of the Mexicans," agree remarkably well with the above description, more so 

 than they do with P. Teocdte Lamb., Arb. Brit. p. 2266. We shall give an 

 engraving of this cone in a future Number. 



P. Ayacahuite C. Ehrenberg ; Linnaea, vol. xii. p. 492. ; not in Arboretum 

 Britannicum. — This is the most remarkable species of the division, and it is 

 allied to Pinus 5trobus. " My highly valued friend Charles Ehrenberg found 

 this tree 100 ft. high, at Omitlan, near Hacienda de Guerrero. It is called 

 Ayacahuite, and also Pinones, because it was believed to have originated in 

 that species (P. Llaveaw/), though wrongly, as the seeds of the present species 

 are winged. The leaves are in fives on small spur-like protuberances, which, 

 when very close together, make the twig look stunted, and very crooked. 

 Each leaf is from 3 in. to 4 in. long, and about a third of a line broad ; flat on 

 the back, but with a sharp projecting keel-like midrib, and two furrows. The 

 leaves are whitish when young, and furnished with sharp thickened small 

 teeth, not very close together, on the margin, towards the points. The 

 youngest twigs have very short reddish brown hairs, only perceptible with a 

 magnifying glass, but which do not last long. The scales on the branches 

 are short, of a longish three-cornered shape, pointed, and afterwards bent 

 back ; the sheaths are short, and do not lie close to the leaves. The cones 

 are more than a foot long when at their full growth (we saw one 13 in. long), 

 about 3 in. in diameter at the base, and tapering towards the point. The 

 scales are about 2 in. long, standing open, with their points more or less 

 bent downwards ; the rhomboidal surface is much longer than it is broad, 

 intersected by many wrinkles lengthwise, of a dull greenish and yellowish 

 brown colour. (In P. 5trobus the points of the scales are bluntly rounded, 

 obtuse, and stand upright.) A great deal of resin exudes from the whole 



Vol. XV. — No. 108. k 



