Solidago multiradiata

Aiton

Hort. Kew. 3: 218. 1789.

Common names: Northern or Rocky Mountain goldenrod verge d’or à rayons nombreux
IllustratedEndemic
Synonyms: Aster multiradiatus (Aiton) Kuntze Solidago algida Piper Solidago cusickii Piper Solidago dilatata A. Nelson Solidago heterophylla Nuttall Solidago multiradiata var. arctica (de Candolle) Fernald Solidago multiradiata var. scopulorum A. Gray Solidago rubra Linnaeus Solidago scopulorum Linnaeus Solidago virgaurea var. arctica de Candolle Solidago virgaurea var. multiradiata (Aiton) Torrey & A. Gray
Treatment appears in FNA Volume 20. Treatment on page 111. Mentioned on page 110.

Plants (3–)10–30(–80) cm; caudices branched. Stems 1–10(–30+), decumbent to erect, slender, tufted, proximally glabrous or sparsely hairy, densely short-hispido-strigose in arrays. Leaves: basal and proximal cauline petiolate; petioles winged, margins ciliate; blades linear-oblanceolate to spatulate, 10–170 × 3–30 mm, serrate to crenate near apices; distal cauline sessile; blades sometimes subclasping stems, ovate to linear-lanceolate, 16–20 × 7–11 mm, margins often distinctly ciliate. Heads 4–75(–100+), not secund, in dense, round-topped corymbiform arrays; branches white villous. Peduncles 5–6 mm, villous; bracteoles 0–2, linear-lanceolate to lanceolate. Involucres 4–8 mm. Phyllaries unequal to subequal, outer linear-lanceolate to lanceolate, lengths ± 2/3 inner, margins ciliate, apices acute to attenuate. Ray florets 12–18; laminae 3–4 × 0.5–1 mm. Disc florets 10–35; corollas 3–5 mm, lobes 0.3–1 mm. Cypselae 1.5–4 mm, sparsely to moderately strigose; pappi 3–4 mm (inner bristles clavate). 2n = 18, 36.


Phenology: Flowering Jul–Sep.
Habitat: Tundra and tundralike habitats, alpine slopes and meadows
Elevation: 0–3700 m

Distribution

V20-213-distribution-map.gif

Alta., B.C., Man., N.B., Nfld. and Labr., N.W.T., N.S., Nunavut, Ont., Que., Sask., Yukon, Alaska, Ariz., Calif., Colo., Idaho, Mont., N.Mex., Oreg., Utah, Wash., Wyo.

Discussion

Solidago multiradiata is the North American species most closely related to S. virgaurea, the type species of the genus, native to mostly arctic and alpine regions of Eurasia. Plants of S. multiradiata from the Rocky Mountains have been treated as var. scopulorum; they differ so little from those of other parts of the range that recognition of the variety without further support does not appear justified.

Selected References

None.

Lower Taxa

None.
... more about "Solidago multiradiata"
John C. Semple +  and Rachel E. Cook +
Northern or Rocky Mountain goldenrod +  and verge d’or à rayons nombreux +
Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.W.T. +, N.S. +, Nunavut +, Ont. +, Que. +, Sask. +, Yukon +, Alaska +, Ariz. +, Calif. +, Colo. +, Idaho +, Mont. +, N.Mex. +, Oreg. +, Utah +, Wash. +  and Wyo. +
0–3700 m +
Tundra and tundralike habitats, alpine slopes and meadows +
Flowering Jul–Sep. +
Illustrated +  and Endemic +
Aster multiradiatus +, Solidago algida +, Solidago cusickii +, Solidago dilatata +, Solidago heterophylla +, Solidago multiradiata var. arctica +, Solidago multiradiata var. scopulorum +, Solidago rubra +, Solidago scopulorum +, Solidago virgaurea var. arctica +  and Solidago virgaurea var. multiradiata +
Solidago multiradiata +
Solidago subsect. Multiradiatae +
species +