Dryas drummondii Richardson ex Hook.

Yellow mountain-avens (en)

Species

Angiosperms > Rosales > Rosaceae > Dryas

Characteristics

Plants 2–23 cm. Leaf blades oblong-elliptic to obovate, 4–38(–46) × 2–24 mm, base usually cuneate, sometimes truncate or cordate, margins ?flat?, crenate, dentate, or ± serrate, sinuses 10–25% to midvein, apex rounded to obtuse, surfaces smooth, tomentose, feathery hairs and stipitate glands absent or on midveins and petioles; basal leaflets 1(–2), 0.5–3 × 0.5–2 mm. Peduncles 40–263 mm. Flowers nodding at flowering; sepals ovate, 4–6 × 3–4 mm; petals 8–10(–12), erect, yellow, 8–12 × 4–7 mm; filaments hairy. Achenes 2.5–3 mm; styles 15–39 mm. 2n = 18.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.5 - 1.0
Mature height (meter) 0.18 - 0.27
Root system -
Rooting depth (meter) 0.3
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer frankia
Photosynthetic pathway c3

Environment

Light 3-7
Soil humidity 4-5
Soil texture 3-4
Soil acidity 4-7
Soil nutriment -
Hardiness (USDA) 1-7

Usage

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

Cultivation

Can be grown by cuttings, divisions or seedlings.
Mode cuttings divisions seedlings
Germination duration (days) 50 - 180
Germination temperacture (C°) 15 - 21
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -45
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Fruit

Dryas drummondii fruit picture by Clover Love (cc-by-sa)
Dryas drummondii fruit picture by Clover Love (cc-by-sa)
Dryas drummondii fruit picture by Naïs LE GAL (cc-by-sa)

Distribution

Dryas drummondii world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:84233-2
WFO ID wfo-0001012667
COL ID 37TXF
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Dryadaea drummondii Dryas octopetala var. drummondii Dryas drummondii var. drummondii Dryas drummondii

Lower taxons

Dryas drummondii var. tomentosa Dryas drummondii var. eglandulosa