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FNA | Family List | FNA Vol. 9 | Rosaceae | Spiraea

10a. Spiraea douglasii Hooker var. douglasii

Leaf abaxial surfaces ˂whitish to grayish˃, lanate to tomentose. Inflorescence branches tomentose. Pedicels tomentose. Flowers: hypanthia and sepals tomentose.

Flowering May–Aug; fruiting Jul–Nov. Stream banks, moist woodland margins, wet meadows, fens, swamps, roadsides; 0–2500 m; B.C.; Calif., Oreg., Wash.; introduced in Europe.

H. J. Scoggan (1978–1979, part 3) identified two forms of var. douglasii based upon petal color: forma alba J. K. Henry (white) and forma douglasii (pink to deep rose). See discussion under var. menziesii for information that may also apply to var. douglasii.


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