PINUS AYACAHUITE 
Identification. —PINUS AYACAHUITE, C. Ehrenberg; Schlechtendal in Linncea, xii. p. 492 (1838); Loudon, Encycl. of Trees , p. 1023 
(1842); Spach, Hist. Nat. Veget. Phaner xi. p. 4 (1842); Antoine, Conif., p. 47 (1846); Endlicher, Syn. Conif., 
p. 149 (1847); Knight, Syn. Conif., p. 34 (1850); Lindley and Gordon, Journ. Hort. Soc., v. p. 215 (1850); Carriere, 
Traitd GCn. des Conif., p. 306 (1855); Gordon, Pinetum , p. 216 (1858); and ed. 2, p. 292; Henkel and Hochstetter, 
Synop. d. Nadelh, p. 96 (1865); Parlatore in D. C. Prod., xvi. 2, p. 406 (1868) ; Engelmann, Revision of Genus Pinus, 
p. 15 (1880) ; Veitch, Manual of Conferee, p. 176 (1881) ; Masters in Gard. Chron. (October 14, 1882). 
PINUS STROBILIFORMIS, Wislizenus. 
Engravings. — Leaves , Cfc. —Loudon, Encycl. of Trees, f. 1919-1921. Cones, &c. —Masters, Gard. Chron. (October 14, 1882). 
Specific Character. —P. foliis quinis filiformibus ; strobilis cylindrato-conico-acutis prselongis, squa- 
marum apophysi dimidiato pyramidata acuminata, in strobilis maturioribus versus basin apice plus minusve 
recurva umbone terminali obtuso. 
Habitat in Mexico, montibus provinciarum, Chiapa et Oaxaca. 
A tree reaching ioo feet in height: in youth not unlike Pinus excelsa. Branchlets devoid of leaves 
at the base, and clothed with a ferruginous pubescence, which soon disappears. Bark of the trunk of a 
dull green or leaden greyish hue, smooth in the young trees, and when older rough with the pulvinuli of 
the fallen leaves. Buds short, peaked at the apex and swollen behind, clothed with short linear triangular 
scales, which are afterwards reflexed and fall off. Leaves in fives (see fig. on plate), triquetral, 3 or 4 inches 
long, turned back, narrow, weak, and lank, scarcely exceeding the third part of a line in breadth ; point 
acute and tapering, with no lines of stomata on the back; with from three to six rows on each side of 
the inner face; the margins both of the sides and keel very minutely serrulate. The resin canals are 
peripheral and surrounded by hypoderm cells (in a specimen grown at Cheshunt), though Engelmann 
says there are no such fibres around the ducts. Sheath of the leaves composed of scales nearly an 
inch long, soon falling off. Male flowers not observed. Cones pendent (see plate), very long (9 to 12 
inches), usually curved, narrow, cylindrical in the middle, but attenuated at both ends, apex pointed. 
Scales, when mature, fully 2 inches in length (see plate), often grooved longitudinally, almost of a corky 
substance, apophysis greyish-white, forming a strong contrast with the part of the scale not exposed to the 
light, which is dark umber-brown, with a pyramidate apex and a small brownish umbo. The apex in the 
older cones is sometimes reflexed, more especially in the sterile scales towards the base. The plate shews 
the scale of a mature cone. Seeds winged (see plate), small for the size of the cone (about 2 lines long), 
obovate, testaceous, brown, often marked longitudinally,with darker lines. The wing (see plate) is about 
an inch long, and about 5 lines at its broadest part, obliquely truncate, of the same colour as the seed, with 
darker longitudinal stripes or lines. Cotyledons twelve. 
Mr. Gordon says ( Pinetum , Supplement to ed. 1, p. 72), that among the Pines introduced by M. Roezl 
there were two Ayacahuites —one the white and the other the red; that the former, Pinus Ayacahuite 
bianco —which from his reference we presume to be meant by him for this species—is the same as Roezl’s 
P. Bonapartea, and that his P. Ayacahuite Colorado is P. Loudoniana , Gordon. Whether these synonyms 
be correct or not, neither of them appears to us to belong to this species, so far as we can judge from the 
materials we have seen. Mr. Gordon’s opinion is given after the inspection of Roezl’s specimens in the 
hands of Mr. Standish. We also have seen a set of specimens of Roezl’s species, purchased in Mexico 
[40] A from 
