Difference between revisions of "Salix tweedyi"
Bot. Gaz. 40: 377. 1905.
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|common_names=Tweedy’s willow | |common_names=Tweedy’s willow | ||
| − | |basionyms={{Treatment/ID/ | + | |special_status={{Treatment/ID/Special_status |
| + | |code=F | ||
| + | |label=Illustrated | ||
| + | }}{{Treatment/ID/Special_status | ||
| + | |code=E | ||
| + | |label=Endemic | ||
| + | }} | ||
| + | |basionyms={{Treatment/ID/Basionym | ||
|name=Salix barrattiana var. tweedyi | |name=Salix barrattiana var. tweedyi | ||
|authority=Bebb ex Rose | |authority=Bebb ex Rose | ||
| + | |rank=variety | ||
| + | |publication_title=Contr. U.S. Natl. Herb. | ||
| + | |publication_place=3: 572. 1896 | ||
}} | }} | ||
|synonyms= | |synonyms= | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Salix tweedyi | name=Salix tweedyi | ||
| − | |||
|authority=(Bebb ex Rose) C. R. Ball | |authority=(Bebb ex Rose) C. R. Ball | ||
|rank=species | |rank=species | ||
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|publication title=Bot. Gaz. | |publication title=Bot. Gaz. | ||
|publication year=1905 | |publication year=1905 | ||
| − | |special status= | + | |special status=Illustrated;Endemic |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_161.xml |
|genus=Salix | |genus=Salix | ||
|subgenus=Salix subg. Vetrix | |subgenus=Salix subg. Vetrix | ||
Latest revision as of 23:31, 5 November 2020
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.
Phenology: Flowering Jul.
Habitat: Subalpine and alpine, streamsides and bottoms, lakeshores, marshes, spruce bogs, talus slopes, tundra, quartzite, granite, or, sometimes, limestone substrates
Elevation: 1400-4000 m
Distribution
B.C., Idaho, Mont., Wash., Wyo.
Discussion
Selected References
None.