Helichrysum petraeum Hilliard

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Perennial herb, stock woody, crowned with several leaf rosettes, flowering stems lateral, decumbent, up to 450 mm long, loosely branched, loosely woolly, leafy. Radical leaves ±30-50 x 2-4 mm, linear or linear-lanceolate, apex acute or subacute, mucronate, base broad, papery, clasping, purplish when young, both surfaces grey-woolly; cauline leaves ±10-20 x 2-3 mm, oblong-lanceolate, acute, mucronate, base slightly narrowed, half-clasping, both surfaces loosely woolly, glandular-setose, wool glabrescent. Heads heterogamous, campanulate, 10 mm long, about twice that across the radiating bracts, solitary at the branch tips, the whole forming a very open corymbose panicle. Involucral bracts in ±10 series, loosely imbricate, much exceeding the flowers, glossy, acute, white, tipped crimson. Flowers ±120-230, 18-32 female, 118-195 homogamous, yellow, sometimes tipped crimson. Achenes not seen, ovaries with myxogenic duplex hairs. Pappus bristles several, barbellate above, nude below, bases not cohering.
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 -
Soil texture 7-9
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 petraeum world distribution map, present in eSwatini and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:900024-1
WFO ID wfo-0000013083
COL ID 3K74R
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Helichrysum petraeum