View source for Salix nivalis

{{Treatment/ID
|accepted_name=Salix nivalis
|accepted_authority=Hooker
|publications={{Treatment/Publication
|title=Fl. Bor.-Amer.
|place=2: 152. 1838
|year=1838
}}
|common_names=Dwarf snow willow
|special_status={{Treatment/ID/Special_status
|code=F
|label=Illustrated
}}{{Treatment/ID/Special_status
|code=E
|label=Endemic
}}
|basionyms=
|synonyms={{Treatment/ID/Synonym
|name=Salix nivalis var. saximontana
|authority=(Rydberg) C. K. Schneider
|rank=variety
}} {{Treatment/ID/Synonym
|name=Salix reticulata subsp. nivalis
|authority=(Hooker) Á. Löve, D. Löve & B. M. Kapoor
|rank=subspecies
}} {{Treatment/ID/Synonym
|name=Salix reticulata var. saximontana
|authority=(Rydberg) Kelso
|rank=variety
}}
|hierarchy=Salicaceae;Salix;Salix subg. Chamaetia;Salix sect. Chamaetia;Salix nivalis
|hierarchy_nav=<div class="higher-taxa"><div class="higher-taxon"><small>family</small>[[Salicaceae]]</div><div class="higher-taxon"><small>genus</small>[[Salix]]</div><div class="higher-taxon"><small>subgenus</small>[[Salix subg. Chamaetia]]</div><div class="higher-taxon"><small>section</small>[[Salix sect. Chamaetia]]</div><div class="higher-taxon"><small>species</small>[[Salix nivalis]]</div></div>
|volume=Volume 7
|mention_page=page 62
|treatment_page=page 66
}}<!--

--><span class="statement" id="st-undefined" data-properties=""><b>Plants </b>0.01–0.04 m, (dwarf, forming clonal mats by rhizomes). <b>Stems</b> trailing or erect; branches yellow-brown or red-brown, glabrous or pubescent; branchlets yellow-brown or red-brown, glabrous or pilose. <b>Leaves</b>: stipules absent or rudimentary; petiole 1.5–7 mm (sometimes glandular distally or throughout); largest medial blade hypostomatous, (veins impressed-reticulate, 2 pairs of secondary veins arising at or close to base, arcing toward apex,), elliptic to broadly elliptic, 6–22 × 4–15 mm, 1.1–2.8 times as long as wide, base convex, rounded, subcordate, or cuneate, margins slightly revolute, entire (glandular-dotted), apex convex, rounded, or retuse, abaxial surface glabrous or with long-silky hairs, adaxial slightly glossy, glabrous; proximal blade margins entire; juvenile blade glabrous. <b>Catkins</b>: staminate 7–19 × 2.5–6 mm, flowering branchlet 0.5–17 mm; pistillate densely to loosely flowered (4–17 flowers), stout, subglobose or globose, 7–21 × 2–9 mm, flowering branchlet 1–10 mm; floral bract tawny or light rose, 0.8–1.8 mm, apex rounded, entire, abaxially glabrous. <b>Staminate</b> flowers: abaxial nectary 0.5–1.3 mm, adaxial nectary narrowly oblong, oblong, or square, 0.5–1.2 mm, nectaries connate and cup-shaped; filaments distinct, glabrous or hairy basally; anthers ellipsoid or shortly cylindrical, 0.4–0.6 mm. <b>Pistillate</b> flowers: abaxial nectary (0–)0.2–0.5 mm, adaxial nectary oblong, 0.2–1 mm, longer than stipe, nectaries distinct or connate and shallowly cup-shaped; stipe 0–0.8 mm; ovary obturbinate, short-silky, hairs flattened, beak abruptly tapering to styles; ovules 8–10 per ovary; styles distinct to connate 1/2 their lengths, 0.2–0.4 mm; stigmas flat, abaxially non-papillate with rounded tip, 0.2–0.26–0.36 mm. <b>Capsules</b> 3–4 mm. <b>2n</b> = 38.</span><!--

-->{{Treatment/Body
|phenology=Flowering late Jun-late Aug.
|habitat=Alpine tundra, cirques, lake basins, rocky slopes and ridges, fellfields
|elevation=1900-4000 m
|distribution=Alta.;B.C.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Mex.;Oreg.;Utah;Wash.;Wyo.
|discussion=<p>Because geographic overlap is small and evidence of intergradation is tenuous, <i>Salix nivalis</i> is best treated as a species separate from <i>S. reticulata</i>; <i>S. nivalis</i> was previously treated as a subspecies of <i>S. reticulata</i> (G. W. Argus 1986b, 1991).</p>
|tables=
|references=
}}<!--

--><!--

-->{{#Taxon:
name=Salix nivalis
|authority=Hooker
|rank=species
|parent rank=section
|synonyms=Salix nivalis var. saximontana;Salix reticulata subsp. nivalis;Salix reticulata var. saximontana
|basionyms=
|family=Salicaceae
|phenology=Flowering late Jun-late Aug.
|habitat=Alpine tundra, cirques, lake basins, rocky slopes and ridges, fellfields
|elevation=1900-4000 m
|distribution=Alta.;B.C.;Calif.;Colo.;Idaho;Mont.;Nev.;N.Mex.;Oreg.;Utah;Wash.;Wyo.
|reference=None
|publication title=Fl. Bor.-Amer.
|publication year=1838
|special status=Illustrated;Endemic
|source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V7/V7_58.xml
|genus=Salix
|subgenus=Salix subg. Chamaetia
|section=Salix sect. Chamaetia
|species=Salix nivalis
}}<!--

-->[[Category:Treatment]][[Category:Salix sect. Chamaetia]]