Salix serissima is a species of flowering plant in the willow family known by the common names autumn willow and fall willow. It is native to North America, where it is distributed across much of Canada and the northern contiguous United States.[1]
This willow is a shrub growing to 2 to 3 m (6.6 to 9.8 ft) tall,[1] and known to reach 5 m (16 ft) at times.[2] The stems and twigs are hairless. The leaves are lance-shaped to oval and are up to 11 cm long by 3.3 wide. They are hairless. The inflorescence is a catkin.[2]
This willow grows in forests and woodlands, and in moist habitat such as bogs, swamps, and riverbanks. It grows with aspen (Populus tremuloides) and balsam poplar (P. balsamifera). It may grow with other species of willow.[1] Its seeds remain dormant through the winter and germinate in the spring, allowing it to invade fens and other open, moist habitat.[2]
The distribution of this plant extends across northern North America, but several disjunct populations are found to the south. These include four in the Black Hills of South Dakota (two on the Black Hills National Forest); one in the Sherman Mountains of Albany County, Wyoming (on the Medicine Bow National Forest); seven in north-central Colorado (one on the Arapaho-Roosevelt National Forest); and one in southwestern Colorado (potentially on the San Juan National Forest). Though it is not a threatened species in general, in these areas it is considered sensitive. It is threatened by alterations in the hydrology of the peatland on which it grows.[3]
Salix serissima is a species of flowering plant in the willow family known by the common names autumn willow and fall willow. It is native to North America, where it is distributed across much of Canada and the northern contiguous United States.
This willow is a shrub growing to 2 to 3 m (6.6 to 9.8 ft) tall, and known to reach 5 m (16 ft) at times. The stems and twigs are hairless. The leaves are lance-shaped to oval and are up to 11 cm long by 3.3 wide. They are hairless. The inflorescence is a catkin.
This willow grows in forests and woodlands, and in moist habitat such as bogs, swamps, and riverbanks. It grows with aspen (Populus tremuloides) and balsam poplar (P. balsamifera). It may grow with other species of willow. Its seeds remain dormant through the winter and germinate in the spring, allowing it to invade fens and other open, moist habitat.
The distribution of this plant extends across northern North America, but several disjunct populations are found to the south. These include four in the Black Hills of South Dakota (two on the Black Hills National Forest); one in the Sherman Mountains of Albany County, Wyoming (on the Medicine Bow National Forest); seven in north-central Colorado (one on the Arapaho-Roosevelt National Forest); and one in southwestern Colorado (potentially on the San Juan National Forest). Though it is not a threatened species in general, in these areas it is considered sensitive. It is threatened by alterations in the hydrology of the peatland on which it grows.
Salix serissima est une espèce de saule de la famille des Salicaceae originaire d'Amérique du Nord[1].
Salix serissima est aussi connu sous les noms communs de saule d'automne (en anglais : autumn willow et fall willow). Il est originaire d'Amérique du Nord, où il pousse dans une grande partie du Canada et du nord des États-Unis contigus[2].
Ce saule est un arbuste qui fait généralement 2 à 3 m de haut[2]. Il peut parfois atteindre 5 m[3]. Les tiges et les rameaux sont glabres. Les feuilles sont ovales en forme de lance et font jusqu'à 11 cm de long par 3,3 cm de large. Elles sont aussi glabres[3].
'Salix serissima pousse dans les forêts et les terres boisées, dans un habitat humide tels que mares, marais et berges. Il pousse avec le tremble ( Populus tremuloides) et le peuplier ( P. balsamifera). Il peut se développer avec d'autres espèces de saules[2]. Ses graines restent en dormance pendant l'hiver et germent au printemps, ce qui lui permet d'envahir d'autres espaces ouverts, et les habitats humides[3].
Sa distribution concerne le nord de l'Amérique du Nord mais plusieurs populations éparses se trouvent au sud. Par exemple quatre zones dans les Black Hills du Dakota du Sud (deux dans la Black Hills National Forest), une dans les Montagnes Sherman de l'Albany County, Wyoming, (sur le National Forest Medicine Bow) ; sept dans le centre-nord Colorado (un dans l' Arapaho - Roosevelt National Forest); et une dans le sud-ouest du Colorado (potentiellement dans la Forêt nationale de San Juan). Ce n'est pas une espèce menacée en général mais considérée comme sensible. Il est menacé par des altérations dans l'hydrologie des tourbières dans lesquelles il se développe[4].
Salix serissima est une espèce de saule de la famille des Salicaceae originaire d'Amérique du Nord.
Salix serissima là một loài thực vật có hoa trong họ Liễu. Loài này được (L.H. Bailey) Fernald miêu tả khoa học đầu tiên năm 1903.[1]
Salix serissima là một loài thực vật có hoa trong họ Liễu. Loài này được (L.H. Bailey) Fernald miêu tả khoa học đầu tiên năm 1903.
