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Crataegus heterophylla is a small tree of about 3 m (9.8 ft) in height, sometimes up to 10 m (33 ft); often semi-evergreen in character, with unusually variable leaves for a hawthorn. Some leaves are entirely smooth-edged, or have just a few (sometimes three) teeth at the apex only. These leaves are oblong, or ovate in shape.
Nature printed leaf, showing shape and venation. Ficus religiosa is a large dry season-deciduous or semi-evergreen tree up to 30 metres (98 ft) tall and with a trunk diameter of up to 3 metres (9.8 ft).
Known as phyllodes, the leaf-likes are actually flattened leaf-stalks or petioles. Initially they are bipinnate. The darker phyllodes are typically older and longer have a lanceolate leaf shape compared to the younger phyllodes which are much smaller in size and shape. [1] The A. macradenia plant or tree can grow up to 5 m in height and 4 m ...
The leaves are alternately placed on the stem, oval in shape with a pointed tip and often a slightly heart shaped base. They are 2–5 in (5.1–12.7 cm) long and typically half as wide [8] with a finely serrated (doubly serrate) margin. They are dark green in color on the upper side and lighter on the bottom, the veins on the bottom are also ...
It is closely related to the pecan, sharing similar leaf shape and being classified in the same section of the genus Carya sect. Apocarya, but unlike the pecan, it does not have edible nuts. It is most readily distinguished from the pecan by the smaller number of leaflets, with many leaves having only 7 leaflets (rarely fewer than 9, and often ...
Two main opposing forces affect a tree's height; one pushes it upward while the other holds it down. By analyzing the interplay between these forces in coast redwoods (Sequoia sempervirens), a team of biologists led by George Koch of Northern Arizona University calculated the theoretical maximum tree height or the point at which opposing forces balance out and a tree stops growing.
Even in nature, Acer palmatum displays considerable genetic variation, with seedlings from the same parent tree typically showing differences in such traits as leaf size, shape, and color. The overall form of the tree can vary from upright to weeping. [9] Three subspecies are recognised: [9] [10] Acer palmatum subsp. palmatum.
Though the height of the lycopsids make the plants similar to modern trees, the constant dichotomy of branches created a habit that contrasts with that of modern trees. At the ends of branches were oval-shaped strobili called Lepidostrobus that had a similar shape to modern cones of a spruce or fir. [3]