familyRosaceae
subfamilyRosaceae subfam. Amygdaloideae
genusSpiraea
speciesSpiraea alba
varietySpiraea alba var. alba
Spiraea alba var. alba
Synonyms: Spiraea ciliata RafinesqueS. cuneifolia BorkhausenS. lancifolia HoffmannseggS. salicifolia var. lanceolata Torrey & A. GrayS. salicifolia var. linearis WenzigS. salicifolia var. paniculata AitonS. tomentosa var. alba Marshall
Revision as of 00:14, 27 July 2019 by FNA>Volume Importer
Leaves: petiole 2–8 mm, puberulent; blade narrowly lanceolate to oblanceolate, 2–9 × 0.5–2.5 cm, length 3–4 times width, chartaceous, base cuneate, margins finely serrate to serrulate, apex acute. Panicles narrowly conic, 5–15 × 3–6 cm. Pedicels 1–2(–3) mm. Flowers 5–8 mm diam.; hypanthia abaxial surface usually puberulent to sparsely strigose, sometimes glabrous or glabrate; sepals 0.8–1 mm; petals 1.7–2 mm; stamens 40–50, 1 times petal length. 2n = 36.
Phenology: Flowering Jun–Sep; fruiting Jun–Nov.
Habitat: Wetlands, fens, riparian areas, moist open sites
Elevation: 0–300 m
Distribution
Alta., Man., Ont., Que., Sask., Ill., Ind., Iowa, Ky., Mass., Mich., Minn., Mo., N.Y., N.C., N.Dak., Ohio, Pa., S.Dak., Tenn., Vt., Va., W.Va., Wis., introduced in Europe.
Discussion
Variety alba is of conservation concern in Kentucky and Tennessee.
Selected References
None.
Lower Taxa
None.