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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.
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 ...
In riparian areas (streamside and moist habitats) some of the trees include: California sycamore (Platanus racemosa) White alder (Alnus rhombifolia) Quaking aspen (Populus tremuloides) Fremont cottonwood (Populus fremontii) Black cottonwood (Populus trichocarpa) Arroyo willow (Salix lasiolepis) [10]
The flora includes Fremont cottonwood (Populus fremontii), Goodding willow (Salix gooddingii), velvet mesquite trees, and the Huachuca water umbel (Lilaeopsis schaffneriana spp. recurva), Federally listed as endangered. [5] In recent decades, rapid growth and population increases in southern Arizona has caused concern with this river.
There are several types of riparian forest, the South Fork Valley has the Great Valley Cottonwood Forest, distinguished by a majority of Fremont cottonwood and willow tree species. The understory is dense with wild rose and shade-tolerant Oregon ash. The soils are fine-grained alluvial with annual river flooding that maintains fertility.
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Image Year Alabama: Longleaf pine: Pinus palustris: 1949 clarified 1997 [1] Alaska: Sitka spruce: Picea sitchensis: 1962 [2] [3] American Samoa: None [4] Arizona: Blue palo verde: Parkinsonia florida: 1954 [5] [6] Arkansas: Loblolly pine: Pinus taeda: 1939 [7] California: Coast redwood: Sequoia sempervirens: 1937 [8] [9] Giant sequoia ...