Mackenzie willow
- Latin name: Salix prolixa Andersson
- French name: Saule du Mackenzie
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Taxonomic Serial Number: 22572
520846 [syn. S. mackenzieana (Hook.) Andersson]
540232 [S. rigida var. mackenzieana]
Description
Leaves
Form
- Narrow
- Widest above the middle
- Tip long, base rounded
- Stipules round-tipped
Length
- 5–15 cm
Colour
- Lower surface whitened
- Young leaves reddish
Margin
- Finely toothed and/or glandular
Petiole
- Red
Buds
Form
- Pointed, pressed against the twig, closely spaced
- Covered with a single scale
- No true terminal bud; end bud originates as a lateral bud
- Flower buds larger than leaf buds
- Leaf scars V-shaped, with 3 vein scars
- Stipule scars on either side
Twigs
Form
- Sometimes with long shaggy hairs
Colour
- Brownish
- Larger stems light brown to reddish-brown
Flowers
Form
- Bracts with curling hairs
Colour
- Brown
Structure
- Dioecious
Floral timing
- With the leaves
Size
Height
- To 5 m
Habitat
Site
- Along streams and lakeshores
- Aspen woodlands and lower mountain slopes
Range
Northwest Territories to southeast Yukon, south through Alberta and British Columbia into the United States
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