Helichrysum longifolium Dc.

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Perennial herb, stock stout, woody, flowering stems several from the crown, simple, erect to ±450 mm, thinly greyish-white felted, leafy throughout. Radical leaves rosetted, ±(70-)100-250 x 7-20(-40) mm, linear-lanceolate to oblong-lanceolate, apex more or less acute, often apiculate, base broad, clasping, upper surface cobwebby at first, generally glabrous or occasionally with scattered coarse hairs later, lower greyish-white felted, often silky; cauline leaves much smaller, diminishing in size upwards, lanceolate to linear-lanceolate, acute to acuminate, uppermost with a small scarious appendage, base half-clasping, very shortly decurrent, both surfaces cobwebby or thinly felted, upper at least usually glabrescent. Heads homogamous, campanulate, 7-9(-11) mm long, several in a congested or open corymbose panicle. Involucral bracts in ±6-8 series, more or less graded, loosely imbricate, inner exceeding flowers, radiating, glossy, bright yellow, all acute or subacute. Receptacle with fimbrils much exceeding the ovaries. Flowers 53-154, yellow. Achenes 1 mm long, barrel-shaped, obscurely 5-ribbed, glabrous. Pappus bristles many, about equalling the corolla, scabrid, tips barbellate, bases cohering strongly by patent cilia. Flowers between July and February, but mainly in November, December and January.
More
Flowering stems several, simple, erect, up to ± 450 mm long, thinly greyish white-felted, leafy throughout. Leaves: radical leaves ± 70-250 mm long, linear-lanceolate to oblong-lanceolate, base broad, clasping, apex acute to apiculate, upper surface cobwebby, glabrous later, lower surface greyish white-felted to silky; cauline leaves smaller upwards, lanceolate to linear-lanceolate, ± acute, shortly decurrent, both surfaces cobwebby or thinly felted, upper surface glabrescent. Capitula campanulate, 7-11 mm long, several in congested or open corymbose panicles; involucral bracts in 6-8 series, graded, glossy, bright yellow. Flowers 53-154, yellow. Flowering time mainly Nov.-Jan. Pappus of many bristles, apex barbellate. Cypselae 1 mm long, barrel-shaped.
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 5-6
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Uses medicinal
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 longifolium world distribution map, present in Mozambique and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:212988-1
WFO ID wfo-0000030625
COL ID 3K6WQ
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Gnaphalium caffrum Helichrysum longifolium Gnaphalium longifolium