Physocarpus capitatus (Pursh) Ktze.
FamilyRosaceae — APG family: Rosaceae
SynonymsSpiraea capitata Pursh.
Common namepacific ninebark
DescriptionShrub with erect to spreading, glabrous or minutely stellate-pubescent branches; leaves broadly ovate to cordate, nearly as broad as long, 3—5-lobed, the lobes doubly crenate-serrate, stellate-pubescent, especially beneath, sometimes nearly glabrous; inflorescence hemispherical; calyx lobes ovate-lanceolate; petals suborbicular; sta- mens numerous; pistils 3-5.
EcologyMoist places, banks of streams. Described from the northwest coast of North America.
Broken line on circumpolar map indicates range of P. opulifolius (L.) Raf. (Spiraea opulifolia L.).
Hultén's Flora About

This is a digital representation of Eric Hultén’s ‘Flora of Alaska and Neighboring Territories: A Manual of the Vascular Plants’, which was published by Stanford University Press in 1968. The book was digitized by C. Webb (at UAMN) as part of the Flora of Alaska project, with funding by the US NSF (Grant 1759964 to Ickert-Bond & Webb), and with permission of Stanford University Press. Data and images © 1968 Board of Trustees of the Leland Stanford Jr. Univ. Usage licence: Creative Commons BY-NC-SA 4.0. NB: You may find OCR errors; please refer to the hard-copy if in doubt.