Helichrysum xerochrysum Dc.

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Perennial herb, rootstock woody, crowned with one or a few leaf rosettes, flowering stems one or a few lateral to the rosette, erect, simple, leafy below, becoming pedunculoid and distantly bracteate upwards, tawny-or grey-woolly. Radical leaves ±60-100 x 25-50 mm, oblong-elliptic, apex subacute, base slightly narrowed, clasping, both surfaces grey-woolly; cauline leaves similar but becoming lanceolate upwards, broad-based, decurrent in long narrow wings. Heads homogamous, subglobose, ±10 x 20 mm across when fully radiating, few on nude peduncles in a lax corymbose panicle. Involucral bracts in ±10 series, graded, loosely imbricate, inner exceeding flowers, radiating, acute, golden-yellow overlaid reddish brown. Receptacle with fimbrils exceeding ovaries. Flowers 122-240. Achenes not seen, ovaries glabrous. Pappus bristles many, equalling corolla, yellow, barbellate in upper half, bases cohering strongly by patent cilia.
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One to few flowering stems lateral to the 1-few leaf rosettes, erect, simple, leafy below, pedunculoid and distantly bracteate upwards, tawny-or grey-woolly. Leaves: radical leaves 60-100 mm long, oblong-elliptic, apex subacute, base clasping, both surfaces grey-woolly; cauline leaves similar, lanceolate upwards, decurrent in long, narrow wings. Capitula subglobose, 10-20 mm in diam., few on nude peduncles in a lax, corymbose panicle; involucral bracts in ± 10 series, graded, golden-yellow overlaid red-brown. Flowers 122-240. Flowering time Dec., Jan. Pappus of many bristles, yellow, barbellate in upper half.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity 4-6
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-11

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 -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Helichrysum xerochrysum world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:213495-1
WFO ID wfo-0000061598
COL ID 6LJBV
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Gnaphalium xerochrysum Helichrysum xerochrysum