The chief trees of the country are the aspen (Populus tremuloides), the ash-leaved maple (Negundo aceroides), oak (Quercus alba), elm (Ulmus Americana), and many varieties of willow.
The cut-leaved oaks are represented in eastern Asia by several species, of which Q.
The remains of palms (Sabctl and Nipa) as well as of other large-leaved Monocotyledons are preserved.
Or to take the small but welldefined group of five-leaved pines, all the species of which may be seen growing side by side at Kew under identical conditions: we have the Weymouth pine (Pinus Strobus) in eastern North America, P. monlicola and the sugar pine (P. Lambertiana) in California, P. Ayacahwite in Mexico, the Arolla pine (P. Cembra) in Switzerland and Siberia, P. Peuce in Greece, the Bhotan pine (P. excelsa) in the Himalayas, and two other species in Japan.
The ancient broad-leaved Gymnosperm Gnetum has a few surviving species scattered through the tropics of both worlds, one reaching Polynesia.
Several varieties of poplar are found in the upper canyons, and trees of the willow-leaved species in the Humboldt Mountains often attain a height of 60 ft.
Planters appreciate generally the value of broad-leaved and narrow-leaved plants and root crops, but there is an absence of exact knowledge, with the result that their practices are very varied.
Is a zone of dwarf hard-leaved oaks, amongst which occur the Oriental forms Fontanesia phillyraeoides, Acer syriacum and the beautiful redstemmed Arbutus Andrachne.
Their leaves are deciduous, alternate, simple, and generally much longer than broad, whence the term willow-leaved has become proverbial.
Longifolius are broad-leaved species; A.
Trifolium, three-leaved plant, Fr.
In moist regions ferns and mosses, the arum and other broad flat-leaved plants are found.
The characteristic plants are thorny and small leaved, or else bulbous.
The forests consist of several species of evergreen and deciduous oaks, " oyamel " (Abies religiosa), the arbutus or strawberry tree, the long-leaved Pinus liophylla and the short-leaved " ocote " or Pinus montezumae and the alder, with an undergrowth of elder (Sambucus mexicana), broom and shrubby heath.
The Comanchean system contains the oldest known remains of netted-veined leaved plants, which mark a great advance in the vegetable world.
Cacti, euphorbias, &c.) from hot, dry and almost waterless regions where evaporation would be excessive, the leaf surface, and consequently the number of stomata, are reduced to a minimum, as it would be fatal to such plants to exhale vapour as freely in those regions as the broad-leaved plants that grow in places where there is abundance of moisture.
(Gentiana acaulis) and London pride (Saxifrage umbrosa),, Cerastium tomentosum, Stachys lavata and the beautiful evergreen Veronica rupestris with sheets of bright blue flowers, close to the ground, or by some of the finer grasses very carefully selected, such as the sheep's fescue (Festuca ovina) or its glaucous-leaved variety.
23, a) and Gesnera, the succulent Sempervivum, Echeveria, Pachyphytum and their allies, and such hard-leaved plants as Theophrasta (fig.
Many of the free-growing soft-wooded plants may also be grown from cuttings of single joints of the young wood, where rapid increase is desired; and in the case of opposite-leaved plants two cuttings may often be made from one joint by splitting the stem longitudinally, each cutting consisting of a leaf and a perfect bud attached to half the thickness of the stem.
Longifolius are broad-leaved sorts; A.
The white and pink forms, with the white and red quilled, and the variegated-leaved aucubaefolia, are some of the best.
- This term is chiefly applied to those summerflowering plants, such as ivy-leaved and zonal pelargoniums, petunias, dwarf lobelias, verbenas, &c., which are employed in masses for filling the beds of a geometrical parterre.
Sow lettuce for succession, with radishes and Round-leaved spinach, twice in the course of the month; and small salads every fortnight.
David, who spent some time in the Albert Edward district, that the creature dwells in the most dense parts of the primeval forest, where there is an undergrowth of solid-leaved, swamp-loving plants, such as arum, Donax and Phrynium, which, with orchids and climbing plants, form a thick and confused mass of vegetation.
The willows reported by some travellers are in reality a narrow-leaved variety of poplar.
The next moment a broad-leaved plant was jerked from the ground where it grew and held suspended in the air before the Wizard.