Helichrysum argyrophyllum Dc.

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Prostrate, well-branched, mat-forming dwarf shrub often forming extensive carpets, old stems bare, rooting, flowering branchlets decumbent or erect to ±100 mm, simple, closely leafy, stems, leaves and base of each head closely enveloped in silvery white, closely-felted somewhat glossy indumentum. Leaves at first rosetted at the branch tips, obovate or obovate-spathulate, up to 30 x 10 mm, distant, smaller and narrower upwards on the flowering twigs, apex obtuse, hooked, recurved, base attenuated, half-clasping. Heads homogamous, broadly campanulate, ±10 x 20 mm across the fully radiating bracts; solitary or few in lax corymbs. Involucral bracts in ±8 series, graded, inner much exceeding the flowers, radiating, loosely imbricate, sub-acute, lemon-yellow, outer overlaid golden-brown. Receptacle paleate, paleae about twice the length of the ovaries, lanceolate, more or less conduplicate, yellow, scarious. Flowers 149-202. Achenes not seen, ovaries glabrous. Pappus bristles many, about equalling corolla, yellow, scabridulous below, barbellate above, bases not cohering.
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Mat-forming, dwarf shrub, often extensive, old stems bare, rooting, flowering stems up to ± 100 mm high, simple, closely leafy, vegetative parts with silvery white, closely felted somewhat glossy indumentum. Leaves obovate or obovate-spathulate, up to 30 mm long, hooked, recurved, base half-clasping. Capitula homogamous, broadly campanulate, 10-20 mm in diam., 1-few in lax corymbs; involucral bracts in ± 8 series, graded, radiating, lemon-yellow, outer with golden-brown. Receptacle paleate. Flowers 149-202. Flowering time Dec.-Mar. Pappus of many bristles, yellow.
Life form -
Growth form shrub
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.5 - 1.0
Mature height (meter) 0.1 - 0.3
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 1-3
Soil texture 7-8
Soil acidity 4-8
Soil nutriment -
Hardiness (USDA) 11-11

Usage

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

Cultivation

Can be grown by cuttings or seedlings.
Mode cuttings seedlings
Germination duration (days) 7 - 10
Germination temperacture (C°) 18 - 23
Germination luminosity light
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Helichrysum argyrophyllum unspecified picture

Distribution

Helichrysum argyrophyllum world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:212435-1
WFO ID wfo-0000010089
COL ID 3K6DV
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Gnaphalium argyrophyllum Helichrysum argyrophyllum