1942 



UIBORRTUM AND FRUTICETUM. 



PART I1T. 



toothed towards the top ; glaucous, ami quite glabrous, Fruit racemose, [Humb. et fleam.) A very tall 



straight tree, quite glabrous : younger branches angular. Leaves ;> in. to 4. in. long, membranaceous. 



Petioles about \ in, long, thickish. Male (lowers beneath tho female, in aggregate axillary catkins. 



Female racemes axillary. Flowers sessile. Male flower: calyx bell-shaped, hairy on the outside 



bmb unequally dentate; stamens 5 to 8, j anthers 'J-celled, erect, opening longitudinally. Female 



Bower: ovarj globose, small; style 1. very short; stigmas 8, spreading, thickish. A native of 



the warm parts ot" Mexico, between l.a Venta do la Mojonera and La Venta de Acaguisocla ; 



whore it forms forests, at an elevation of above 2300 ft ^!>7 toises) above the level of the sea. 



rbewood is of groat value to the inhabitants, from its supplying the greatest part of the charcoal 



consumed in Mexico. 



Humb, et Bonn. PI. Xquin., t. 76., and our jig. 18. r >+., Michx. N. Amer. Syl., 1. p. 112. 

 I oblong; blunt at each end, unequal at the base, wavy at the margin, very veiny beneath, 



and somewhat downy. Fruit race- 



tnose llwnb.it lion p.^ A native of 



New Spain, near Ario, at an ele- 

 vation of about fxXHl ft. [994toises). 



A lofty tree, with a trunk from .> ft. 



to I ft. in diameter, covered with 



a vet] thick deeply cracked bark. 



Branches covered with tubercles; 



\ ounget ones leafy, downy. Leaves 



from :") in. to fi in. long,' leathery, 



glabrous and shining above. Petioles 



I in. long. Cups somewhat globose. 



Scales closely imbricated. Nut sphe- 

 rical, nearly covered by the cup. 



This oak is called <i. 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 due 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, and, above all, by the scales 



being imbricated the contrary way; 



that is to say, the point of each 



Male 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 



to the peduncle. According to Michaux, this species is very tall, with a remarkably straight trunk ; 



and i> found in the elevated and dry parts of New Spain, near Ario, where it flowers in September. 

 O jHiniiinata Huinb. et Bonp. Pl./Equin.,t. 77., 



and our Jig*. 1855. and 185G., Michx. N. Amer. 



Syl., I. 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 l'.onp. Found in the same habitat as the pre- 

 ceding. A tree, from 18 It. 

 to 24 ft. high. Branches 

 alternate, glabrous ; the 

 \ younger ones covered with 

 •hurt hairs, visible to the 

 naked eye. Leaves alter- 

 nate, from 3 in. to 5 in. 

 long ; glabrous above, 

 downy beneath. Petioles 

 1 in. long. Scabs of the 

 ci i|> closely imbricated, ex- 

 ternally convex, glaucous. 



Nut orate, baltoovered »>v the cup. This oak is 



closely allied to <i. obtusata, but differ* in size, 



•ii the form of the leaves, and the disposition 



of the Kales of the cup. Humboldt is of opinion 



thai the wood i* lighter, and less compact than 



Q rep&nda Humb. <t Bono. PL JEquin., t 79., and our Ag. 1857. , Michx. N. Am. Syl., 1. p. 108. 



OOlong-OVal, on ibort footstalks: downy beneath, glabrous above ; slightly repand ; recurved 



..t the margin. 1 nut raceme <■ {Humo. et Bonp.) A shrub, 2ft, high, branched from the very base, 



procun bl n( Ot erect Brani h( - alternate, round, quite smooth ; younger ones covered with white 



I • rsa 1^ in. long, leathery; younger onei lanceolate, downy on both sides, quite entire. 



ttipulei linear awl-shaped, persistent, downy. Male flowers inferior, in aggregate axillary catkins. 



Femak trior axillary, and sessile, Male flower: calyx campanulate, limb unequally den- 



re tunes a* long as the calyx, erect. A native of New Spain, ir. moist shady 



ttween Real del Monte and Koran, af an elevation of above 7700 ft. (1291 toises). it is the 



t of ' pedes of oak in Mexico, forming extended masses, and having the branches 



of om b of another, The young shoots of Q. rep&nda agree with the description 



crophflla givr-n by '•'< m the Analet de las dene. Nat., iii. p. 264.: but Humboldt had 



plant, and, th< << fore, could nol determine whether they were the tame. 



q [atirtna Humb et Bonp PI , and our Jig. 1858., Michx. N. Amer. Syl., I. p. 108. 



larply acuminated, quite- glabrous: some area little 3-pointea at the tip. 



Humb et Bonp.) A tall tree, with the habit of Latinu n6bilii, 



I In. to Sin. Ion;;, leathery. Petioles about £ in. in length. Female 



Olitarj !| Of the CUp ovate, obtuse, membranaceous, 



n, like powder. A native of the woods in the temperate parti 



