Compilation
Salix tristis

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Name

Identification
Isotype of Salix tristis Aiton [family SALICACEAE ] (stored under name); Verified by Fernald, 1934
Related name
  • Salix occidentalis
  • Salix m��hlenbergiana
  • Salix tristis
  • Salix bebbiana
  • Salix humilis
  • Salix discolor
Common name
  • Dwarf prairie willow, Flora of North America Vol. 7

Flora

Entry for Salix humilis Marshall var. tristis (Aiton) Griggs [family SALICACEAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 7,
Names
Salix humilis Marshall var. tristis (Aiton) Griggs [family SALICACEAE], Proc. Ohio Acad. Sci., 4: 301. 1905
Salix tristis Aiton [family SALICACEAE], Hort. Kew., 3: 393. 1789
Salix humilis var. microphylla (Andersson) Fernald [family SALICACEAE]
Treatment Author(s)
George W. Argus
Information
Low to mid shrubs, 0.3–1 m. Stems decumbent; branches tomentose, peeled wood smooth or striate, striae sparse, to 2 mm; branchlets yellow-brown. Leaves: stipules absent or rudimentary on late ones; petiole 0.5–3(–6) mm, velvety or villous adaxially; largest medial blade narrowly oblong, narrowly elliptic, oblanceolate, or obovate, (13–)20–50(–70) × 3–13 mm, 2.3–9 times as long as wide, margins strongly revolute, abaxial surface hairs gray throughout, adaxial slightly glossy, moderately densely tomentose; proximal blade margins entire. Catkins: staminate 6.5–13.5 × 5–10 mm, flowering branchlet 0–1 mm; pistillate 11–17.5 × 5.5–12 mm, flowering branchlet 0–1.5 mm; floral bract 0.8–1.4 mm. Staminate flowers: filaments glabrous or hairy basally. Pistillate flowers: ovary pyriform; ovules 6 per ovary; stigmas 0.2–0.24–0.32 mm. Capsules 5–9 mm.
Phenology
mar-may (spring)
Altitude range
60–1600 m;
Distribution
USA Ark.USA Conn.USA Del.USA D.C.USA Ga.USA Ill.USA Ind.USA Kans.USA Ky.USA La.USA MaineUSA Md.USA Mass.USA Mich.USA Minn.USA Miss.USA Mo.USA N.H.USA N.J.USA N.Y.USA N.C.USA N.Dak.USA OhioUSA Okla.USA Pa.USA R.I.USA S.C.USA Tenn.USA Va.USA W.Va.USA Wis.
Discussion
Hybrids:
Although variety tristis is reported to hybridize with Salix eriocephala, S. humilis var. humilis, and S. petiolaris (G. W. Argus 1986), hybrids have not been confirmed.

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