| Alnus incana subsp. tenuifolia (Nutt.) Breitung | |||
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| Family | Betulaceae — APG family: Betulaceae | ||
| Synonyms | Alnus incana var. virescens S. Wats., Alnus tenuifolia Nutt. | ||
| Description | Large shrub or small tree with first grayish, later reddish, bark; leaves roundish or oblong, ovate, dull grayish-green above, paler beneath, pubescent when young, glabrescent in age, closely toothed, the teeth finely serrated, rounded or subcordate at base; cones short-peduncled; nutlets with thin, narrow margin. | ||
| Ecology | Forms thickets along streams. A. incana described from Europe, subsp. tenuifolia from the Rocky Mountains and the Blue Mountains. | ||
| Taxonomy notes | Very closely related to A. rugdsa (Du Roi) Spreng. (Betula rugosa Du Roi) of eastern North America and to A. incana subsp. incana of Europe. Broken line on circumpolar map indicates range of these relatives. |
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.