Biorepository Data Portal
Home
Search
Sample search
Map search
Dynamic Species List
Taxonomic Explorer
Images
Image Browser
Image Search
Datasets
Research Datasets and Special Collections
Carabidae Checklists with Keys
Mosquito Checklists with Keys
Checklist: Research Sites - Invertebrates
Checklist: Research Sites - Plants
Checklist: Research Sites - Vertebrates
Sample Use
Sample Use Policy
Sample Request
Sample Archival Request
Dataset Publishing
How to Cite
Additional Information
Tutorials and Help
Biorepository Staff
About NEON
NEON Data Portal
ASU Biocollections
About Symbiota
Getting Started
Login
New Account
Sitemap
Salix tweedyi
(Bebb ex Rose) Ball
No occurrences found
Family:
Salicaceae
Tweedy's willow
[
Salix barrattiana var. tweedyi
Bebb]
Images
not available
FNA
Resources
George W. Argus, James E. Eckenwalder, Robert W. Kiger in Flora of North America (vol. 7)
Plants
1-3 m.
Stems:
branches red-brown, not glaucous, villous to glabrescent; branchlets yellow-brown, (sometimes strongly glaucous), pilose or moderately densely villous, (buds
caprea
- or
arctica
-type, scale inner membranaceous layer free, separating from outer layer).
Leaves:
stipules (sometimes marcescent), foliaceous, (3.5-10-23 mm, 1-1.4-2.8 times as long as wide, usually lanceolate, ovate, or suborbiculate, (pleated when pressed), apex rounded, convex, or acute; petiole shallowly grooved adaxially, 3-11.3-26 mm, villous adaxially; largest medial blade elliptic to broadly elliptic, 36-65-100 × 17-35.5-85 mm, 1.1-1.9-2.9 times as long as wide, base convex, rounded, subcordate, or cordate, margins thickened, serrulate or spinulose-serrulate (sometimes teeth absent, margins with spherical glands), apex acuminate, acute, or convex, abaxial surface glaucous or not, pilose or villous, hairs curved, adaxial dull, pilose or villous to glabrescent; proximal blade margins entire (glands only) or serrulate; juvenile blade green, glabrous, pilose, or moderately densely villous abaxially, hairs white.
Catkins
flowering before leaves emerge; staminate stout, 39-56 × 14-22 mm, flowering branchlet 0-2 mm; pistillate densely flowered, stout, 39-70(-110 in fruit) × 13-22 mm, flowering branchlet 0-2 mm; floral bract dark brown, 1.8-4 mm, apex acute or rounded, abaxially sparsely hairy, hairs straight or wavy.
Staminate flowers:
adaxial nectary oblong, 0.6-1.2 mm; filaments distinct, glabrous or hairy basally; anthers yellow or purple turning yellow, 0.6-1 mm.
Pistillate flowers:
adaxial nectary oblong, narrowly oblong, or square, 0.5-1 mm, (unlobed), shorter to longer than stipe; stipe 0.4-1.5 mm; ovary pyriform, beak gradually tapering to styles; ovules 18-30 per ovary; styles 1.1-2.8 mm; stigmas slenderly cylindrical, 0.32-0.53-1 mm.
Capsules
4-7 mm. Flowering Jul. Subalpine and alpine, streamsides and bottoms, lakeshores, marshes, spruce bogs, talus slopes, tundra, quartzite, granite, or, sometimes, limestone substrates; 1400-4000 m; B.C.; Idaho, Mont., Wash., Wyo.
Click to Display
0 Total Images