Species: Spiraea x pyramidata
Encyclopedia of Puget Sound
Pyramidal spiraea is a rhizomatous shrub with erect or spreading branches, 5-10 dm (20-40 in) tall. The alternate leaves are elliptic and 2-7 cm (1-3 in) long with margins that are entire below but sharply toothed above. Leaves and stems are generally short-hairy. Numerous tiny flowers occur in finely branched globose clusters that are grouped in a pyramid-shaped inflorescence, 5-10 cm (2-4 in) wide at the base, at the top of the stems. Each flower has a sparsely hairy, cup-shaped calyx, ca. 2 mm long, with 5 reflexed lobes, and the 5 pink-tinged petals are 2-3 mm long. There are 25-50 stamens and the ca. 5-lobed ovary matures into a capsule 2-3 mm long.
Source: Encyclopedia of Life
Classification
Dicotyledoneae
Rosales
Rosaceae
Spiraea
NatureServe
Classification
Ecology and Life History
Pyramidal spiraea is a rhizomatous shrub with erect or spreading branches, 5-10 dm (20-40 in) tall. The alternate leaves are elliptic and 2-7 cm (1-3 in) long with margins that are entire below but sharply toothed above. Leaves and stems are generally short-hairy. Numerous tiny flowers occur in finely branched globose clusters that are grouped in a pyramid-shaped inflorescence, 5-10 cm (2-4 in) wide at the base, at the top of the stems. Each flower has a sparsely hairy, cup-shaped calyx, ca. 2 mm long, with 5 reflexed lobes, and the 5 pink-tinged petals are 2-3 mm long. There are 25-50 stamens and the ca. 5-lobed ovary matures into a capsule 2-3 mm long.
Source: Encyclopedia of Life