Helichrysum retortum Willd.

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Suffrutex, main stems up to 450 mm long or straggling to greater lengths, branching, prostrate, rooting at intervals, flowering branchlets erect, all closely leafy throughout. Leaves imbricate, 11-30 x 2-6 mm, scarcely diminishing in length upwards but often narrower, oblong, oblanceolate or obovate, lower half appressed, webbed to stem, upper half flat, spreading, often somewhat recurved, tip more or less acute, mucronate, hooked, both surfaces enveloped in silky silvery 'tissue-paper' indumentum. Heads heterogamous, turbinate, 25-40 mm long, nearly double that across the radiating bracts, solitary at the tips of the branchlets, closely surrounded by leaves. Involucral bracts in ±7 series, loosely imbricate, graded, inner much exceeding flowers, linear-lanceolate, acute, glossy white, outer ovate-acuminate, golden-brown sometimes with a rosy-crimson overcast. Receptacle very shortly honeycombed. Flowers 94-246, 17-44 female, 77-204 homogamous. Achenes 1 mm long, cylindric, with myxogenic duplex hairs. Pappus bristles many, equalling corolla, tips barbellate, shaft scabrid, bases lightly fused.
More
Straggling, closely leafy, silvery shrublet to 50 cm. Leaves imbricate, spreading or recurved above, oblong, folded, hooked, silvery silky with tissue paper-like hairs. Flower heads disciform, terminal, solitary and tips nested in leaves, top-shaped, shiny white often flushed pink and brown, glabrous, 25-40 × ± 40 mm, florets ± 100-250, ovary papillate-hairy.
Life form -
Growth form shrub
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
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Rooting depth (meter) -
Root diameter (meter) -
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Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture 5-6
Soil acidity -
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Hardiness (USDA) -

Usage

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

Cultivation

Mode -
Germination duration (days) 7 - 10
Germination temperacture (C°) 18 - 23
Germination luminosity light
Germination treatment -
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Optimum temperature (C°) -
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Vigor -
Productivity -

Images

Helichrysum retortum unspecified picture

Distribution

Helichrysum retortum world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:213242-1
WFO ID wfo-0000000521
COL ID 3K772
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Xeranthemum radicans Xeranthemum retortum Gnaphalium retortum Helichrysum retortum Helichrysum argenteum Xeranthemum polyfolium Helichrysum radicans Argyrocome retorta Astelma retorta Helichrysum retortum var. retortum