Salix humilis Marshall. Upland Willow, Prairie Willow. Phen: Mar-May; . Hab: Upland areas, often in open or semi-open sites, in barrens, fens, rocky woodlands, and grassy balds over mafic rocks (such as amphibolite) up to at least 1800m elevation, also in powerline rights-of-way, woodland borders, and other miscellaneous habitats. Dist: NL (Newfoundland) and MB, south to Panhandle FL and ne. TX.

Origin/Endemic status: Native

Synonymy: = C, Fl2, NE, S, S13, Tat, WH3; = Salix humilis Marshall var. humilis – Ar, FNA7, GrPl, K1, K3, K4, Mi, NY, Pa, W, Argus (1986); < Salix humilis Marshall – GW2, RAB; > Salix humilis Marshall var. humilis – F, G, Il, WV; > Salix humilis Marshall var. hyporhysa Fernald – F, Il, WV; > Salix humilis Marshall var. keweenawensis Farw. – F, G; > Salix humilis Marshall var. rigidiuscula (Andersson) B.L.Rob. – G, Tx

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACU (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: FACU (taxonomic split from wetland indicator species)
• Great Plains: FACU (taxonomic split from wetland indicator species)
• Midwest: FACU (taxonomic split from wetland indicator species)
• Northcentral & Northeast: FACU (taxonomic split from wetland indicator species)

Heliophily: 8