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Acaena microphylla Hook.F.

Species

Angiosperms > Rosales > Rosaceae > Acaena

Characteristics

Rhizomatous perennial; stems mat-forming, c. 1 mm diam., < 25 cm long, soon rooting and covered by soil; erect branchlets < 2 cm long. Lvs 0.5-3 cm long; stipules entire; leaflets 9-15, orbicular, 1.5-4 × 1.5-4 mm, with 5-7 obtuse teeth, green or bronze and shining on upper surface, with veins and teeth dark, glaucescent and sparsely hairy on lower surface. Scape 0.7-2.5 cm long, pilose (var. microphylla), or capitulum ± sessile (var. pauciglochidiata); capitulum c. 5 mm diam. at flowering, < 3 cm diam. (including spines) at fruiting; florets c. 20 (var. microphylla), or 2-4 (var. pauciglochidiata); sepals 4; stamens 2; anthers white; styles 2, white; achenes 2. Fr. turbinate, c. 2 × 2 mm, glabrous; spines 4, pink or crimson, < 15 mm long, smooth (var. microphylla) or with a few stiff hairs at tip (var. pauciglochidiata).
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Main stems slender to rather stout, creeping and rooting, sts subterranean, up to c. 3 dm. long; branchlets ascending, up to c. 5 cm. long, glab. to pilose; lvs up to 3 cm. long, 7-13-foliolate; upper lflts c. 3 mm. long, rarely more, deeply crenate-dentate to subserrate, glab. except on veins below and at tips of teeth, suborbicular, subsessile to sessile; terminal lflt with petiolule c. 1 mm. long; stipules linear. Scapes pilose, up to 2 cm. long, bracts absent or minute. Heads c. 2.5 cm. diam. including spines, bractlets linear, entire or two-toothed at apex. Cupules glab., c. 1·5 mm. long, turbinate, angles thickened. Spines unarmed, up to 1 cm. long, bright to purplish red. Sepals ovate, dull green. Stamens 2, anthers white. Styles 2, fimbriate on one side. Achenes 2, seldom 1 only developed.
Life form perennial
Growth form herb
Growth support -
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.5 - 1.0
Mature height (meter) 0.05 - 0.1
Root system creeping-root
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 6-9
Soil humidity 1-5
Soil texture 3-4
Soil acidity 5-9
Soil nutriment -
Hardiness (USDA) 6-8

Usage

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

Cultivation

Can be grown by cuttings, divisions or seedlings.
Mode cuttings divisions seedlings
Germination duration (days) 30 - 100
Germination temperacture (C°) 14 - 18
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -23
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Acaena microphylla unspecified picture
Acaena microphylla unspecified picture

Distribution

Acaena microphylla world distribution map, present in New Zealand

Identifiers

LSID urn:lsid:ipni.org:names:720051-1
WFO ID wfo-0001016187
COL ID 8QG3
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Acaena microphylla
WorldFloraDB 2024