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Periods of leaf fall often coincide with seasons: winter in the case of cool-climate plants or the dry-season in the case of tropical plants, [19] however there are no deciduous species among tree-like monocotyledonous plants, e.g. palms, yuccas, and dracaenas. The hydrangea hirta is a deciduous woody shrub found in Japan. [citation needed]
In botany, deciduous is a description of plants that carry out a process which lead to the loss of leaves during a certain time annually. This process of shedding leaves is known as abscission. [2] Deciduous plants represent a variety of plant species among trees, shrubs and herbs.
Temperate deciduous forests are characterized by a variety of temperate deciduous tree species that vary based on region. [6] Most tree species present in temperate deciduous forests are broadleaf trees that lose their leaves in the fall, [8] though some coniferous trees such as pines (Pinus) are present in northern temperate deciduous forests. [6]
It is one of two general types of trees, the other being a conifer, a tree with needle-like or scale-like leaves and seeds borne in woody cones. [1] Broad-leaved trees are sometimes known as hardwoods. [2] Most deciduous trees are broad-leaved [3] but some are coniferous, like larches. [4]
The leaf stalks are usually red and are up to 10 cm (4 in) long. The leaves can turn a characteristic brilliant red in autumn, but can also become yellow or orange on some individuals. Soil acidity can influence the color of the foliage and trees with female flowers are more likely to produce orange coloration while male trees produce red.
Leaf marcescence is most often seen on juvenile plants and may disappear as the tree matures. It also may not affect the entire tree; sometimes leaves persist only on scattered branches. [4] Marcescence is most obvious in deciduous trees that retain leaves through the winter.
Quercus douglasii is a medium-sized tree with sparse foliage, generally 6–20 meters (20–66 feet) tall, with a trunk 36–60 centimeters (1–2 ft) in diameter at breast height. [5] Trunks are typically solitary, but some trees have multiple trunks. [5] [8] The tallest recorded specimen was found in Alameda County, at 28.7 m (94 ft).
Populus grandidentata is a medium-sized deciduous tree native to North America, found mostly in the northeastern United States and southeastern Canada. Leaves are similar to Populus tremuloides, but slightly larger and having larger teeth. [3] The leaves tremble in the wind as those of P. tremuloides do. Bark of younger trees is olive-green ...