Brooklyn Botanic Garden

Spiraea thunbergii


by Science Staff
Not peer reviewed
Last modified: 03/15/2013


Spiraea L., Sp. Pl. 1: 489. 1753. Gen. Pl., ed. 5, 216. 1754. LECTOTYPE: Spiraea salicifolia L., designated by Rydberg (1908).

Awayus Raf., Sylva Tellur. 151. 1838. TYPE: Awayus japonica Raf. ex Merr. (=Spirea japonica Raf., nom. illeg. not Spiraea japonica L. f.).

Key to the species of Spiraea

1. Inflorescences simple, unbranched umbel or umbellike racemes...2
1. Inflorescences compound, branched panicles or corymbs...3

2. Leaves ovate to oblong-lanceolate...Spiraea prunifolia
2. Leaves linear-lanceolate...Spiraea thunbergii

3. Inflorescences corymbs, the floriferous part wider than long...5
3. Inflorescences panicles, longer than broad...4

4. Leaves beneath and inflorescences densely tomentose...Spiraea tomentosa
4. Leaves and inflorecences nearly or quite glabrous...Spiraea alba

5. Leaves acute, obtuse, or rounded; flowers usually white...Spiraea betulifolia
5. Leaves long-acuminate; flowers usually pink...Spiraea japonica

List of Spiraea Species


References to Spiraea

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Brooklyn Botanic Garden