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A large, evergreen tree, Cupressus × leylandii reaches a size between 20 and 25 m high, with its leaves giving it a compact, thick and regular habit. It grows very fast with yearly increases of 1 m. The leaves, about 1 mm long and close to the twig, are presented in flaky, slightly aromatic branches. They are dark green, somewhat paler on the ...
The flower-like williamsoniacean male reproductive structure Weltrichia is associated with the female reproductive structure Williamsonia, though it is uncertain whether the parent plants were monoecious (male and female reproductive structures being present on the same plant) or dioecious (where each plant has only one gender of reproductive ...
Only two species are known from New Zealand, although fossil pollen evidence suggests there were more previously. [9] It is a good example of a Gondwanan family, with taxa occurring on virtually every land mass considered a remnant of the ancient supercontinent Gondwana, except Antarctica. The family and subfamilies are thought to have ...
Natural vegetative propagation is mostly a process found in herbaceous and woody perennial plants, and typically involves structural modifications of the stem, although any horizontal, underground part of a plant (whether stem, leaf, or root) can contribute to vegetative reproduction of a plant. Most plant species that survive and significantly ...
Escape – a plant originally under cultivation that has become wild, a garden plant growing in natural areas. Evergreen – remaining green in the winter or during the normal dormancy period for other plants. Eupotamous – living in rivers and streams. Euryhaline – normally living in salt water but tolerant of variable salinity.
A geophyte (earth+plant) is a plant with an underground storage organ including true bulbs, corms, tubers, tuberous roots, enlarged hypocotyls, and rhizomes. Most plants with underground stems are geophytes but not all plants that are geophytes have underground stems. Geophytes are often physiologically active even when they lack leaves.
They are one of the oldest lineages of extant (living) vascular plants; the group contains extinct plants that have been dated from the Silurian (ca. 425 million years ago). [ 2 ] [ 3 ] Lycophytes were some of the dominating plant species of the Carboniferous period, and included the tree-like Lepidodendrales , some of which grew over 40 metres ...
Leaves are initially green but become more mottled brown and leathery as the plant grows. [9] Juvenile leaves, which are produced up to 4 m or before the tree branches, [9] are especially long and narrow (1 m long by 1–1.5 cm wide) [11] – similar in shape to a lance. [5]