''Salix delnortensis'' is a species of

willow Willows, also called sallows and osiers, from the genus ''Salix'', comprise around 400 speciesMabberley, D.J. 1997. The Plant Book, Cambridge University Press #2: Cambridge. of typically deciduous trees and shrubs, found primarily on moist s ...

known by the common name Del Norte willow.Calflora: ''Salix delnortensis''
/ref>

Distribution

The plant is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the Klamath Mountains of northwestern

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

and southwestern

Oregon Oregon () is a U.S. state, state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of it ...

. It is named for Del Norte County, California, its primary distribution locale. It is also endemic to

serpentine soil Serpentine soil is an uncommon soil type produced by weathered ultramafic rock such as peridotite and its metamorphic derivatives such as serpentinite. More precisely, serpentine soil contains minerals of the serpentine subgroup, especially anti ...

s. It grows in riparian zone and

California mixed evergreen forest : California mixed evergreen forest is a plant community found in the mountain ranges of California and southwestern Oregon. The Mixed evergreen forest plant community is native to the Northern and Southern California Coast Ranges and Sierra Nev ...

habitats, between .

Description

''Salix delnortensis'' is a

shrub A shrub (often also called a bush) is a small-to-medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees ...

growing tall. It forms thickets, sometimes quite large, some of which are made up of clones of one individual. The shrub has many branches, which are very brittle. The young twigs are velvety or woolly with hairy coats; older branches are hairless. The leaves are oval, sometimes with pointed tips, smooth-edged, and woolly on the undersides. They grow to 10 centimeters long or more. The

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed o ...

s are produced before the leaves. Each is a

catkin A catkin or ament is a slim, cylindrical flower cluster (a spike), with inconspicuous or no petals, usually wind-pollinated (anemophilous) but sometimes insect-pollinated (as in ''Salix''). They contain many, usually unisexual flowers, arranged cl ...

of flowers. Male catkins are about 3 centimeters long and thick, while female catkins vary in size. Its bloom period is April and May.

References

External links

Calflora Database: ''Salix delnortensis'' (Del Norte willow)Jepson Manual eFlora (TJM2) treatment of ''Salix delnortensis''UC CalPhotos gallery: ''Salix delnortensis''
delnortensis Flora of California Flora of Oregon Flora of the Klamath Mountains Endemic flora of the United States Natural history of Del Norte County, California Flora without expected TNC conservation status {{Salicaceae-stub