| Betula kenaica Evans | |||
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| Family | Betulaceae — APG family: Betulaceae | ||
| Synonyms | Betula perfiljevii Vassil., Betula papyrifera var. kenaica (Evans) Henry | ||
| Common name | kenai birch | ||
| Description | Tree up to 10(-12) meters tall, with trunk up to 30 cm in diameter and dark bark; young twigs resiniferous; leaves ovate, with cuneate or truncate base, double- serrate, more or less pubescent above and in margin toward base, slightly glandu- lar-dotted, and with pilose nerves below; catkins brown, narrow; bracts with lobes of about equal length, rounded in apex, the lateral slightly diamond-shaped; nutlets with wings about as broad as body. | ||
| Ecology | Subalpine zone, often in the alder belt or at the boundary toward the treeless tundra zone. | ||
| Taxonomy notes | Forms hybrids with B. papyrifera and with B. nana subsp. exilis; such hybrids are common in the Kenai Peninsula (B. Hornei Butler) and on Kodiak Island. Within the area indicated by the broken line, the hybrid influence of B. kenaica can be traced. |
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.