Spiraea douglasii var. menziesii

(Hooker) C. Presl

Abh. Königl. Böhm. Ges. Wiss., ser. 5, 6: 555. 1851.

Endemic
Basionym: Spiraea menziesii Hooker Fl. Bor.-Amer. 1: 173. 1832
Synonyms: S. douglasii subsp. menziesii (Hooker) Calder & Roy L. Taylor S. subvillosa
Treatment appears in FNA Volume 9. Treatment on page 407. Mentioned on page 406, 408.

Leaf abaxial surfaces glabrous or pubescent. Inflorescence branches tomentulose. Pedicels tomentulose to sparsely pubescent. Flowers: hypanthia and sepals tomentulose to sparsely pubescent.


Phenology: Flowering Jun–Aug; fruiting Jul–Nov.
Habitat: Stream banks, flood plains, moist open forests, woodland margins, wet meadows and fields, wetlands, roadside ditches
Elevation: 0–2500 m

Distribution

V9 685-distribution-map.jpg

B.C., Alaska, Calif., Colo., Idaho, Mont., Oreg., Wash., introduced in Europe.

Discussion

H. J. Scoggan (1978–1979, part 3) identified two forms of var. menziesii based upon petal color: forma menziesii (Hooker) Voss (pink to deep rose) and forma pseudosalicifolia B. Boivin (white). These appear to be local forms that may be stable; petal color can be variable within varieties and species in Spiraea and the stability of these forms, within the variety and species as a whole, has not been fully assessed. A. R. Kruckeberg (1967) tested two strains of var. menziesii and found that one showed adaptation to soils derived from ultramafic rocks (serpentinite, peridotite, dunite) and one did not. Although not discussed by Kruckeberg, variation of flower color within the variety may be correlated with substrate.

Selected References

None.

Lower Taxa

None.
Richard Lis +
(Hooker) C. Presl +
Spiraea menziesii +
B.C. +, Alaska +, Calif. +, Colo. +, Idaho +, Mont. +, Oreg. +, Wash. +  and introduced in Europe. +
0–2500 m +
Stream banks, flood plains, moist open forests, woodland margins, wet meadows and fields, wetlands, roadside ditches +
Flowering Jun–Aug +  and fruiting Jul–Nov. +
Abh. Königl. Böhm. Ges. Wiss., ser. +
S. douglasii subsp. menziesii +  and S. subvillosa +
Spiraea douglasii var. menziesii +
Spiraea douglasii +
variety +