Plantae > Tracheophyta > Magnoliopsida > Malpighiales > Salicaceae > Salix > Salix prolixaSalix prolixa (MacKenzie's willow)Synonyms: Salix cordata mackenziana; Salix cordata mackenzieana; Salix cordata var. mackenzieana; Salix eriocephala mackenzieana; Salix eriocephala var. mackenzieana; Salix mackenziana (homotypic); Salix mackenzieana (homotypic); Salix mackenzieana var. mackenzieana; Salix mackenzieana var. macrogemma; Salix rigida mackenzieana; Salix rigida var. mackenzieana; Salix rigida var. macrogemma Salix prolixa is a species of willow known by the common name MacKenzie's willow. It is native to western North America from Alaska and northwestern Canada to the high mountains of California and Utah. It grows in moist habitat such as riverbanks, springs, and marshes. It is a shrub growing 1 to 5 meters tall. The lance-shaped or pointed, oval leaves are up to 15 cm long, hairless, waxy on the undersides, and accompanied by wide stipules. The inflorescence is a catkin of flowers. |
| Bloom Period [1] | Early Spring | | Drought Tolerance [1] | Medium | | Fire Tolerance [1] | Medium | | Frost Free Days [1] | 49 days | | Fruit/Seed Abundance [1] | High | | Fruit/Seed Begin [1] | Summer | | Fruit/Seed End [1] | Summer | | Growth Form [1] | Single Crown | | Growth Period [1] | Spring, Summer | | Growth Rate [1] | Moderate | | Leaf Type [1] | Deciduous | | Lifespan [1] | Perennial | | Propagation [1] | Container, Cutting, Seed, Sprig | | Root Depth [1] | 36 inches (91 cm) | | Seed Spread Rate [1] | Rapid | | Seed Vigor [1] | Low | | Seeds Per [1] | 2499995 / lb (5511550 / kg) | | Shape/Orientation [1] | Semi-Erect | | Structure [2] | Shrub | | Vegetative Spread Rate [1] | Slow |  | | Flower Color [1] | White | | Foliage Color [1] | Green | | Fruit Color [1] | Yellow | | | Flower Conspicuous [1] | Yes | | Fruit Conspicuous [1] | Yes | | | Height [1] | 45 feet (13.7 m) | | | Hardiness Zone Minimum [1] | USDA Zone: 1 Low Temperature: -60 F° (-51.1 C°) → -50 F° (-45.6 C°) | | Light Preference [1] | Full Sun | | Soil Acidity [1] | Moderate Acid | | Soil Fertility [1] | Infertile | | Water Use [1] | Low | | | Screening - Summer [1] | Moderate | | Screening - Winter [1] | Porous |
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Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0
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