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Populus fremontii, commonly known as Frémont's cottonwood, [1] is a cottonwood (and thus a poplar) native to riparian zones of the Southwestern United States and northern through central Mexico. [2] It is one of three species in Populus sect. Aigeiros. The tree was named after 19th-century American explorer and pathfinder John C. Frémont.
Many of the cottonwoods grown commercially are the hybrid of eastern cottonwood and black poplar, Populus × canadensis (hybrid black poplar or Carolina poplar). Cottonwood bark is often a favorite medium for artisans. The bark, which is usually harvested in the fall after a tree's death, is generally very soft and easy to carve.
Populus trichocarpa, the black cottonwood, [1] western balsam-poplar [2] or California poplar, is a deciduous broadleaf tree species native to western North America. It is used for timber , and is notable as a model organism in plant biology .
Populus angustifolia, commonly known as the narrowleaf cottonwood, [2] is a species of tree in the willow family . It is native to western North America, where it is a characteristic species of the Rocky Mountains and the surrounding plains. [ 3 ]
Poplars of the cottonwood section are often wetlands or riparian trees. The aspens are among the most important boreal broadleaf trees. [2] Poplars and aspens are important food plants for the larvae of a large number of Lepidoptera species. Pleurotus populinus, the aspen oyster mushroom, is found exclusively on dead wood of Populus trees in ...
Populus deltoides is a large tree growing to 20–30 m (65–100 ft) tall and with a trunk up to 2.8 m (9 ft 2 in) diameter, one of the largest North American hardwood trees. The bark is silvery-white, smooth or lightly fissured when young, becoming dark gray and deeply fissured on old trees.
Populus heterophylla, also known as downy poplar, [2] swamp poplar [2] and swamp cottonwood, [3] is a large deciduous poplar belonging to the Populus genus of the family Salicaceae. This species can grow on sites that have too much water for other native poplars. [4] On the IUCN Red List this species is listed as "least concern". [5]
Leaf scorch (also called leaf burn, leaf wilt, and sun scorch) is a browning of plant tissues, including leaf margins and tips, and yellowing or darkening of veins which may lead to eventual wilting and abscission of the leaf.