Douglas Spiraea, Douglas's Spiraea, Hardhack, Rose Spirea, Spiraea, Steeplebush, Western Spiraea: Spiraea douglasii var. douglasii (Synonyms: Spiraea douglasii var. roseata) - Shrub to 6 feet. Flowers small, pink, and arranged in dense racemes. Leaves ovate with small serrations. Typically found in wet meadows, or along stream & lake banks.
Hardhack, Menzies' Spiraea, Menzies' Spirea: Spiraea douglasii var. menziesii (Synonyms: Spirea cuneifolia, Spiraea douglasii ssp. menziesii, Spiraea menziesii, Spiraea subvillosa) -
Birch-leaved Spiraea, Shinyleaf Spiraea, Shiny-leaf Spiraea, White Spiraea: Spiraea lucida (Synonym: Spiraea betulifolia, Spiraea betulifolia ssp. lucida, Spiraea betulifolia var. lucida) - An erect or ascending shrub to 1 meter high. Leaves egg shaped or elliptical, often toothed midleaf to the tip, and 2-8 cm long. Flowers small and white in a dense, flat-topped inflorescence.
Pyramid Spiraea: Spiraea x pyramidata (Synonyms: Spiraea xsubvillosa, Spiraea betulifolia x douglasii, Spiraea menziesii var. pyramidata, Spiraea tomentulosa) -
Rose Meadowsweet, Rosy Spiraea, Subalpine Spiraea: Spiraea splendens (Synonyms: Spiraea betulifolia var. rosea, Spiraea densiflora, Spiraea densiflora ssp. densiflora, Spiraea densiflora ssp. splendens, Spiraea densiflora var. densiflora, Spiraea densiflora var. splendens, Spiraea lucida var. rosea, Spiraea splendens ssp. splendens, Spiraea splendens var. rosea, Spiraea splendens var. splendens) - Shrub to 1 meter in height. Leaves egg-shaped to elliptical and from 2-4 cm long with irregular, coarse teeth. Flowers very small and rose colored in a dense, flat-topped inflorescence.
Hardhack, Steeplebush: Spiraea tomentosa (Synonym: Spiraea tomentosa var. rosea) -