Salix nivalis Hook.

Snow willow (en)

Species

Angiosperms > Malpighiales > Salicaceae > Salix

Characteristics

Plants 0.01-0.04 m, (dwarf, forming clonal mats by rhi-zomes). Stems trailing or erect; branches yellow-brown or red-brown, glabrous or pubescent; branchlets yellow-brown or red-brown, glabrous or pilose. Leaves: 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. Catkins: 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. Staminate 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. Pistillate 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. Capsules 3-4 mm. 2n = 38.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention deciduous
Sexuality dioecy
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.01 - 0.05
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 3-7
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) 4-9

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Salix nivalis world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:226037-2
WFO ID wfo-0000929846
COL ID 79BZT
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Salix nivalis Salix saximontana Salix aemulans Salix reticulata subsp. nivalis Salix reticulata var. saximontana Salix nivalis var. saximontana Salix nivalis var. nivalis Salix reticulata var. nivalis Salix reticulata var. nana Salix vestita var. nana