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Salicaceae
Salicaceae image
Arizona State University Herbarium
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George W. Argus, James E. Eckenwalder, Robert W. Kiger in Flora of North America (vol. 7)
Shrubs or trees, heterophyllous or not, sometimes clonal, forming clones by root shoots, rhizomes, layering, or stem fragmentation; glabrous or glabrescent to pubescent; branching monopodial or sympodial. Stems erect to pendent; branched. Leaves persistent, deciduous or marcescent, alternate (opposite or subopposite in Salix purpurea), spirally arranged, simple; stipules present or not; petiole present; blade margins toothed or entire, sometimes glandular. Peduncles present or absent. Inflorescences racemose or spicate, usually catkins, unbranched, sometimes fasciculate or racemelike cymes, flowering before or as leaves emerge or year-round; floral bract (1) subtending each flower, displaced onto pedicel or distinct, scalelike, apex entire, toothed, or laciniate; bract subtending pistillate flower deciduous or persistent. Pedicels present or absent. Flowers usually unisexual, sometimes bisexual, usually staminate and pistillate on different plants; sepals present or absent, or perianth modified into 1 or 2 nectaries, or a non-nectariferous disc; stamens 1-60(-70); filaments distinct or connate basally, slender; anthers longitudinally dehiscent; ovary 1, 2-7[-10]-carpellate, 1-7[-10]-locular; placentation usually parietal, sometimes axile on intruded, fused placentae; ovules 1-25 per ovary; style 1 per carpel, distinct or connate; stigmas 2-4, truncate, notched-capitate, or 2- or 3-lobed. Fruits capsular, baccate, or drupaceous. Seeds sometimes surrounded by arillate coma of relatively long, silky hairs; endosperm scant or absent.
JANAS 26(1)
PLANT: Dioecious, deciduous trees and shrubs. LEAVES: alternate, simple, stipulate, usually serrate, the teeth tipped by minute glands, the stipules sometimes suppressed. INFLORESCENCE: bracteate catkins, the staminate falling after anthesis, the pistillate persisting until seed release. FLOWERS: without a perianth; stamens 2-80; pistils 2-4-carpelled, unilocular, the placentae parietal, the ovary superior. FRUITS: valvately dehiscent capsules. SEEDS: with long, cottony hairs. NOTES: 2-3 genera, over 500 spp., chiefly boreal and temperate, as pioneers in moist habitats of the N Hemisphere. REFERENCES: Eckenwalder, James E. 1992. Salicaceae. Ariz.-Nev. Acad. Sci. 26(1)2.
<< 51 - 100 taxa >>
Salix arctica
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Salix arctophila
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Salix argyracea
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Salix argyrocarpa
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Salix arizonica
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Salix athabascensis
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Salix atrocinerea
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Salix aurita
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Salix babylonica
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Salix barclayi
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Salix barrattiana
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Salix bebbiana
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Salix bebbii
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Salix beschelii
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Salix blanda
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Salix bonplandiana
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Salix boothii
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Salix brachycarpa
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Salix breweri
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Salix brownii
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Salix calcicola
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Salix candida
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Salix caprea
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Salix caroliniana
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Salix cascadensis
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Salix chamissonis
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Salix chlorolepis
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Salix cinerea
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Salix columbiana
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Salix commutata
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Salix conifera
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Salix cordata
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Salix cryptodonta
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Salix delnortensis
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Salix dieckiana
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Salix discolor
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Salix drummondiana
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Salix eastwoodiae
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Salix ehrhartiana
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Salix elaeagnos
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Salix eriocephala
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Salix exigua
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Salix exilifolia
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Salix famelica
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Salix farriae
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Salix floridana
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Salix fragilis
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Salix fuscescens
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Salix geyeriana
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Salix glatfelteri
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NSF NEON | Open Data to Understand our Ecosystems The National Ecological Observatory Network is a major facility fully funded by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this material do not necessarily reflect the views of the National Science Foundation.