| Petasites hyperboreus Rydb. | |||
| |||
| Family | Compositae — APG family: Asteraceae | ||
| Synonyms | Petasites vitifolius, Petasites frigidus var. nivalis Cronq. | ||
| Description | Similar to P. frigidus, but leaves deeply lobed into 3-5 broad, grossly toothed segments. | ||
| Ecology | Described from the Skagit River, British Columbia. | ||
| Taxonomy notes | Frequently forms hybrid swarms with P. frigidus. Possibly a hybridogen species stabilized from the hybrid P. frigidus X palmatus in a period when the American and eastern Asiatic ranges of P. palmatus were confluent. |
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.