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(Last Modified On 7/19/2013)
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(Last Modified On 7/19/2013)
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Genus
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Salix L.
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PlaceOfPublication
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Sp. PI. 1015. 1753
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Note
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TYVPE: S. alba L.
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Description
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Dioecious shrubs or trees, often slender and flexuous, often from a sub- terranean caudex; branching alternate. Leaves mostly deciduous, alternate, simple, often narrow, mostly denticulate, the costa prominent with numerous lateral veins; petiole mostly present; stipules mostly present, deciduous or per- sistent, sometimes foliaceous; buds with an indurate, deciduous scale and a hyaline membranous covering. Inflorescences dense spikes or racemes (aments, catkins), terminal on axillary shoots, lax or erect, subtended by basal leafy bracts; pedicels short, elongating in fruit, subtended by a bracteole. Male flowers with 1-2 short glands above the bracteole or a disc, the stamens 2-8, the filaments free or basally united, sometimes pubescent, the anthers rotund, 2-thecate, longitudinally dehiscent; female flowers with short glands above the bracteole or surrounding the ovary, the ovary sessile or stalked, 1-loculed, the style short or elongate, the stigmas 2-4, short, digitate. Fruit a small, 2-4-valved capsule, the valves somewhat leathery, apically dehiscent and recurving; seeds numerous, lenticulate, long-pilose, the embryo erect with 2 large cotyledons and a short epicotyl, the endosperm nuclear.
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Habit
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shrubs or trees
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Note
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Salix is a genus of over 500 species, widespread except in Australia and the South Pacific. In north temperate regions, species of Salix are frequently the dominant species, especially along watercourses and in marshes and other wet places. Salix wood is used in some countries for basketry, for building dykes and locks and for support for mud-covered houses. Trees are often fast growing.
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