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A leaf (pl.: leaves) is a principal appendage of the stem of a vascular plant, [1] usually borne laterally above ground and specialized for photosynthesis.Leaves are collectively called foliage, as in "autumn foliage", [2] [3] while the leaves, stem, flower, and fruit collectively form the shoot system. [4]
The Latin word for 'leaf', folium, is neuter. In descriptions of a single leaf, the neuter singular ending of the adjective is used, e.g. folium lanceolatum 'lanceolate leaf', folium lineare 'linear leaf'. In descriptions of multiple leaves, the neuter plural is used, e.g. folia linearia 'linear leaves'.
The tree is the sole source of food for the catalpa sphinx moth (Ceratomia catalpae), the leaves being eaten by the caterpillars. When caterpillars are numerous, infested trees may be completely defoliated. Defoliated catalpas produce new leaves readily, but with multiple generations occurring, new foliage may be consumed by subsequent broods.
2. (of leaves) A type of vernation in which one leaf is rolled up inside another. 3. A type of vernation of two leaves at a node, in which one half of each leaf is exposed and the other half is wrapped inside the other leaf. corcle A plant embryo, plumule, or plumule plus radicle. cordate
Patchouli leaves have been used to make a herbal tea. In some cultures, the leaves are eaten as a vegetable or used as a seasoning. There are also several herbal medicines, both in Indonesia and in China (TCM), that include dry, ground patchouli leaves as one of the key ingredients.
Many junipers (e.g. J. chinensis, J. virginiana) have two types of leaves; seedlings and some twigs of older trees have needle-like leaves 5–25 mm (3 ⁄ 16 –1 in) long, on mature plants the leaves are overlapping like (mostly) tiny scales, measuring 2–4 mm (3 ⁄ 32 – 5 ⁄ 32 in). When juvenile foliage occurs on mature plants, it is ...
A word of caution about composting leaves: They are dry with few existing nutrients to feed the pile. When you add leaves to the pile, wet the dry leaves to accelerate the composting process.
The stem does not climb, but rather the fronds (leaves) do. The fronds unroll from the tip, and theoretically never stop growing; they can form thickets as they unroll over other plants, rockfaces, and fences. L: A left-handed bine grows in an anticlockwise direction (viewed from the point of view of the plant: S-twist).