Among the Dicotyledons may be mentioned Platanus, Acer (?), Quercus (?), Viburnum, Alnus, Magnolia, Corylus (?), Castanea (?), Zizyphus, Populus and the nettlelike Boehmeria antiqua.
Torreya, now confined to North America and Japan, still lingered,- as did Ocotea, now profusely developed in the tropics, but in north temperate regions only existing in the Canaries: the evergreen oaks, so characteristic of the Miocene, were reduced to the existing Quercus hex.
The polythalamous gall of Aphilothrix radicis, found on the roots of old oak-trees, may attain the size of a man's fist; the galls of another Cynipid, Andricus occultus, Tschek, 6 which occurs on the male flowers of Quercus sessiliflora, is 2 millimetres, or barely a line, in length.
Scierophyllous Plants.These are plants with evergreen leathery ives, and typical of tropical, sub-tropical, and warm temperate gions; e.g., Quercus Suber, Ilex Aquifohium, Hedera Helix, Eucalyps Globulus, Rosmarinus officinalis.
S On the Cecidomyids of Quercus Cerris, see Fitch, Entomologist, xi.
Oak manna or Gueze-elefi, according to Haussknecht, is collected from the twigs of Quercus Vallonia and Q.
Includes Quercus (oak), Fagus (beech), Castanea (sweet-chestnut).
Agriculture, Evc. - The most important species of the few trees that remain in the island are the Aleppo pine, the Pinus laricio, cypress, cedar, carob, olive and Quercus alnifolia.
The genera best represented are Ficus (21 species), Quercus (16 species), Populus (ir species), Rhamnus (9 species), Platanus (8 species), Viburnum (7 species), Magnolia (6 species), Cornus (5 species), Cinnamomum (5 species), Juglans (4 species), Acer (4 species), Salix (4 species), Aralia (3 species), Rhus (3 species), Sequoia (3 species).
Of Cupuliferae, Quercus in three species only reaches Colombia, but Fagus, with only a single one in North America, is represented by several from Chile southwards and thence extends to New Zealand and Tasmania.