1942 ARBORETUM AND FRUTICETUM. PART III. 
toothed towards the top ; glaucous, and quite glabrous. Fruit racemose. (Humb. et Bonp.) A very tall 
straight tree, quite glabrous; younger branches angular. Leaves 3 in. to 4 in. long, membranaceous. 
Petioles about 3 in. long, thickish. Male flowers beneath the female, in aggregate axillary catkins. 
Female racemes axillary. Flowers sessile. Male flower: calyx bell-shaped, hairy on the outside 
limb unequally dentate; stamens 5 to 8.; anthers 2-celled, erect, opening longitudinally. Female 
flower: ovary globose, small; style 1, very short; stigmas 3, spreading, thickish. A native of 
the warm parts of Mexico, between La Venta de la Mojonera and La Venta de Acaguisocla ; 
where it forms forests, at an elevation of above 2300 ft. (397 toises) above the level of the sea. 
The wood is of great value to the inhabitants, from its supplying the greatest part of the charcoal 
consumed in Mexico. 
Q. obtusata Humb. et Bonp. Pl. Aquin., t.'76., and our fig. 1854., Michx. N. Amer. Syl., 1. p. 112. 
Leaves oblong; blunt at each end, unequal at the base, wavy at the margin, very veiny beneath, 
and somewhat downy. Fruit race- 
mose (Humb. et Bonp.) A native of 
New Spain, near Ario, at an ele- 
vation of about 6000 ft. (994 toises), 
A lofty tree, with a trunk from 3 ft. 
to 4ft.in diameter, covered with 
a very thick deeply cracked bark. 
Branches covered with tubercles ; 
younger ones leafy, dowry. Leaves 
from 5 in. to 6 in. long, leathery, 
glabrous and shining above. Petioles 
2 in. long. Cups somewhat globose. 
Scales closely imbricated. Nut sphe- 
rical, nearly covered by the cup. 
This oak is called Q. obtusata, be- 
cause the base, the tip, and the di- 
visions of the leaves are blunt, and 
without any point. The wood is 
very compact, susceptible of taking 
a fine polish, and of resisting a great 
force. The tree is remarkable for 
its height, the thickness of its trunk, 
the glaucous colour of the scales of 
the cup, aud, above all, by the scales 
being imbricated the contrary way ; 
that is to say, the point of each 
scale is turned towards the peduncle. 
This and Q. lanceolata are the only 
Mexican species that are known to 
have all the scales in the cup of 
the acorn imbricated from the nut ‘ b t 
to the peduncle, According to Michaux, this species 1s very tall, with a remarkably straight trunk ; 
and is found in the elevated and dry parts of New Spain, near Ario, where it flowers in September. 
Q. pandurdta Humb, et Bonp. Pl. Zquin., t. 77., - 
and our jigs. 1855. and 1856., Michx. N. Amer. 
Syl., 1. p. 111. Leaves oval-oblong, somewhat 
fiddle-shaped ; acute at the point, unequally cor- 
date at the base, wavy and slightly sinuate on the 
margin, downy beneath. Fruit racemose. (Humb. 
et Bonp.) Found in the same habitat as the pre- 
ceding. A tree, from 18 ft. 
to 24 ft. high. Branches 
, alternate, glabrous; the 
4 younger ones coveredwith 
short hairs, visible to the 
naked eye. Leaves alter- 
nate, from 3in. to 5in. 
long; glabrous above, 
downy beneath. Petioles 
g lin. long. Scales of the 
WY. cup closely imbricated, ex- 
Lak 1855 ternally convex, glaucous. 
Nut ovate, half-covered by the cup. This oak is 
closely allied to Q, obtusata, but differs in size, 
in the form of the leaves, and the disposition 
of the scales of the cup. Humboldt is of opinion 
that the wood is lighter, and less compact, than 
that of Q. obtusata. 
Q. repénda Humb. et Bonp. Pl. Aquin., t. '79., and our fig. 1857., Michx. N. Am. Syl., 1. p. 108. 
Leaves oblong-oval, on short footstalks ; downy beneath, glabrous above; slightly repand ; recurved 
at the margin. Fruit racemose. (Hwmb. et Bonp.) A shrub, 2 ft. high, branched from the very base, 
procumbent or erect. Branches alternate, round, quite smooth ; younger ones covered with white 
down, Leaves 13 in. long, leathery ; younger ones lanceolate, downy on both sides, quite entire. 
Stipules linear awl-shaped, persistent, downy. Male flowers inferior, in aggregate axillary catkins, 
Female flowers superior, axillary, and sessile. Male flower: calyx campanulate, limb unequally den- 
tate; stamens 5 to 7, three times as long as the calyx, erect. A native of New Spain, in moist shady 
places, between Real del Monte and Moran, at an elevation of above 7700 ft. (1291 toises). It is the 
smallest of all the species of oak in Mexico, forming extended masses, and having the branches 
of one interlaced with those of another. The young shoots of Q. repanda agree with the description 
of Q. microphylla given by Nees in the Anales de las Cienc. Nat., iii. p. 264.; but Humboldt had 
not seen Nees’s plant, and, therefore, could not determine whether they were the same. 
Q. lazrina Humb. et Bonp. Pl. Aquin., t. 80., and our fig. 1858., Michx. N. Amer. Syl., 1. 3 108. 
Leaves oval-lanceolate, sharply acuminated, quite glabrous: some area little 3-pointed at the tip. 
Fruit axillary, almost sessile. (Humb. et Bonp.) A tall tree, with the habit of Latrus nobilis, 
glabrous in all parts, Leaves 2in. to 3in. long, leathery. Petioles about 3in. in length. Female 
flowers axillary, almost sessile, and solitary. Scales of the cup ovate, obtuse, membranaceous, 
covered externally with a peculiar down, like powder. A native of the woods in the temperate parts 
