CHAP. CV. 



1945 



Male catkins a^regate, situated beneath the 

 tainens fi. 



QHs\ua fWArivl with fine vellow tomeutum beneath, ij.m t<iixm.-> t .,,f,.- n .-, 



fe,ntk> floweVs Male flower : calyx f.-toothed, stamens fj, anthers ovate, pollen yellow Fe- 

 ,n -5e flowe >, sessile, on the apexof a pedunde about * in. 'long. Female flower : ovary globose ; 

 styes or stij-nas 5, red, thick. A native of New Spain, between Moran and Pachuca. . chr>;"- 

 pltfHa as well as the preceding species, is found forming entire forests between Moran and 1 a- 



chuca, at an elevation of 8400ft. (1400 toises). It is re- 

 markable, on account of the position of its female flowers, 

 which are placed under the male flowers ; and also for the 

 beautiful golden colour of the under surface of the leaves ; 

 a peculiarity which distinguishes it from every other de- 

 scribed species of oak. Michaux mentions that this tree 

 is remarkable for the thinness of its foliage. 



Q pulcfidlla Humb. et Bonp. PI. JEquni., t. 88., and 

 our tie. 186U, Michx. N. Amer. Syl., 1. p. 110. Leaves 

 oblong, obtuse ; emarginate at the base ; covered with 

 white down beneath; teeth short, mucronate. Fruit ses- 

 sile almost solitary. (Humb. et Bonp.} A shrub from 12 ft. 

 to 18 ft high, with a trunk about 2 ft. in circumference, and a smooth bark. Branches alternate, 

 round, covered with tubercles, or callous dots. Leaves crowded towards the tips ot the branches ; 

 Uin to Sin long, on longish footstalks, leathery, wavy on the margin; shining above, reticu- 



* lately veined and co- ^ 



vered with white 

 down beneath. Fe- 

 male flowers axil- 

 lary, solitary,or twin. 

 Cup spherical. Scales 

 roundish-oval, close- 

 Jy imbricated; ex- 

 ternally downy on 

 the back, membrana- 

 ceous. Nut ovate, 

 scarcely longer than 

 the cup. A native of 

 the mountainous re- 

 gion of New Spain, 

 between Guanajuato 

 and Santa Rosa, at 

 an elevation of 8400 

 ft., (1400 toises). It 

 has considerable af- 

 finity with Q. side- 

 roxyla (p. 1943.1; but 

 it differs in its height 



and habit of growth ; in the form and consistency of its leaves ; 

 in their being cut in their petioles, and, lastly, in the size of 

 its fruit, which are larger than in Q. sideroxyla. 1867 



Q. spicuta Humb. et Bonp. PI. vEquin., t. 89., and our fig. 

 1867., Michx. N. Amer., 1. p. 111. Leaves elliptic or 

 obovate, emarginate at the base, remotely toothed, downy be- 

 neath. Female spike on a long footstalk. (Humb. et Bonp.} 

 A tall tree, from 30ft. to 40ft. high. Branches and young? 

 leaves covered with clusters of down. Leaves on short foot- 

 stalks, somewhat wedge-shaped, oboval, or for the most part 

 elliptic ; roundish. obtuse ; glaucous and shining above, to- 

 mentose beneath ; and, in some, reticulately veined, downy. Female flowers in spikes or sessile 

 racemes, distinct. Cup hemispherical. Scales closely imbricated, oblong, blunt, externally convex, 

 downy. Nut ovate. A native of shady situations in the mountain of Nabajas, in Mexico, at an 

 elevation of 9000 it. to 9500 ft. (1487 to 1590 toises). It appears allied to Q. el liptica, described by 

 Nee in the Annies de Ins Ciencias Nalurales, 1801. The leaves are not entire, but are denticulated 

 in the upper half: they are furnished with short thick footstalks, membranaceous, and not cori- 

 aceous ; and, instead of being almost sessile, they are supported on long footstalks. 



Q. stfpul&ris Humb. et Bonp. PI. /Equin., t. 90., and our fig. 1868., Michx. N. Amer. Syl, 1. 

 p. 109. Leaves oboval, sharply toothed towards the point; teeth terminated by mucros ; covered on 



I860 



