Helichrysum petiolare Hilliard & B.L.Burtt

Licorice-plant (en), Immortelle (fr), Immortelle pétiolée (fr)

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

A straggling, loosely branched, soft-wooded shrub forming tangled masses several metres across and as high when supported by other vegetation, branches long, slender, thinly grey-woolly, leafy becoming pedunculoid and distantly bracteate below the inflorescences. Leaf blades mostly 10-35 x 10-30 mm, subrotund to broadly ovate or elliptic-rhomboid, apex rounded, base truncate, subcordate or cuneate, both surfaces grey-woolly-felted, upper sometimes only cobwebby, petiole up to 10 mm, flat, sometimes winged, base auriculate. Heads homogamous, subglobose opening broadly campanulate, ±5 x 5 mm, many in loose terminal corymbose panicles. Involucral bracts in ±5 series, graded, loosely imbricate, about equalling the flowers, radiating, backs loosely grey-woolly above stereome, tips rounded, concave, opaque milk-white. Receptacle with fimbrils equalling or exceeding ovary. Flowers 18-30, yellow, sweetly scented. Achenes 1 mm long, barrel-shaped, 5-ribbed, glabrous. Pappus bristles many, scabrid, about equalling corolla, bases cohering strongly by patent cilia, lightly fused as well.
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Straggling, loosely branched, soft-wooded shrub, forming tangled masses. Stems thinly grey-woolly, leafy becoming distantly bracteate below inflorescences. Leaves 10-35 x 10-30 mm, both surfaces grey-woolly felted, upper surface sometimes only cobwebby; petioles up to 10 mm long, base auriculate. Capitula many, subglobose to broadly campanulate, 5 x 5 mm; involucral bracts in 5 series, opaque milk-white. Flowers 18-30, yellow, sweetly scented. Flowering time Dec., Jan. Pappus of bristles, with bases cohering strongly by patent cilia, also lightly fused. Cypselae 1 mm long, barrel-shaped, 5-ribbed.
Shrubs or subshrubs, aromatic, to 60 cm. Stems loosely branched, straggling. Leaves petiolate; blades ovate, 1–2 cm, apices obtuse to subacute, faces concolor, silvery green, woolly-tomentose. Phyllaries creamy white.
Like H. pandurifolium but leaves abruptly and conspicuously petiolate and not crisped, and involucral bracts obtuse.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 1.0 - 1.5
Mature height (meter) 0.1 - 0.5
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 2-6
Soil texture 5-6
Soil acidity 3-8
Soil nutriment -
Hardiness (USDA) 10-11

Usage

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

Cultivation

Can be grown by cuttings.
Mode cuttings
Germination duration (days) 7 - 10
Germination temperacture (C°) 18 - 23
Germination luminosity light
Germination treatment -
Minimum temperature (C°) 1
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Helichrysum petiolare leaf picture by Martinez Alvaro (cc-by-sa)
Helichrysum petiolare leaf picture by Anharion (cc-by-sa)
Helichrysum petiolare leaf picture by Gómez Francisco Gómez (cc-by-sa)

Flower

Helichrysum petiolare flower picture by Anharion (cc-by-sa)
Helichrysum petiolare flower picture by Eduardo Simiao (cc-by-sa)
Helichrysum petiolare flower picture by pais silvia (cc-by-sa)

Distribution

Helichrysum petiolare world distribution map, present in Spain, France, United Kingdom of Great Britain and Northern Ireland, New Zealand, Portugal, Ukraine, United States of America, and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:213170-1
WFO ID wfo-0000024510
COL ID 3K74P
BDTFX ID 31395
INPN ID 101093
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Gnaphalium petiolatum Helichrysum petiolatum Helichrysum petiolatum Helichrysum petiolare