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Salix herbacea, the dwarf willow, least willow or snowbed willow, is a species of tiny creeping willow (family Salicaceae) adapted to survive in harsh arctic and subarctic environments. Distributed widely in alpine and arctic environments around the North Atlantic Ocean , it is one of the smallest woody plants .
Willow species are hosts to more than a hundred aphid species, belonging to Chaitophorus and other genera, [16] forming large colonies to feed on plant juices, on the underside of leaves in particular. [17] Corythucha elegans, the willow lace bug, is a bug species in the family Tingidae found on willows in North America.
Salix helvetica, the Swiss willow, is a scrubby willow species found in the Alps (from 1700 to 2700 m) and the Tatras portion of the western Carpathians (from 1600 to 2000 m). It is a naturally dwarf, erect shrub, growing to 50 cm (20 in) tall and broad, with silvery undersides on the leaves, and silvery catkins appearing with the leaves.
One of the smallest willows in the world, it is a prostrate, creeping dwarf shrub, only 2–9 cm (0.79–3.54 in) high, and has underground branches or runners in the uppermost soil layers. The leaves are rounded-ovate, 5–32 mm long and 8–18 mm broad, dark green with entire margins. It is dioecious, with
Salix reticulata, the net-leaved willow, [1] or snow willow, [2] is a dwarf willow, native to the colder parts of Europe, North America, and Northern Asia. It is found in the western United States ( Salix reticulata subsp. nivalis ), including the Sierra Nevada and Rocky Mountains.
The following species in the genus Salix are recognised by Plants of the World Online: [1] Extant species ... Salix herbacea L. – dwarf willow;
As a result, the plant's appearance varies; the female catkins are red-coloured, while the male catkins are yellow-coloured. [5] [6] Despite its small size, it is a long-lived plant, growing extremely slowly in the severe arctic climate; one in eastern Greenland was found to be 236 years old. [5] Hybrids with Salix arcticola and Salix glauca ...
Salix alba, the white willow, is a species of willow native to Europe and western and central Asia. [ 2 ] [ 3 ] The name derives from the white tone to the undersides of the leaves. It is a medium to large deciduous tree growing up to 10–30 m tall, with a trunk up to 1 m diameter and an irregular, often-leaning crown.