Helichrysum leontonyx Dc.

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Grey-woolly annual herb with a slender taproot, branches 15-150 mm long, many from the crown, simple or much branched, slender, prostrate, often reddish, loosely woolly, distantly leafy but leaves crowded under the heads and at the crown. Radical leaves often withered at flowering, mostly 15-30 x 5-10 mm, oblong-elliptic to spathulate, apex rounded, base narrowed, margins flat, cauline leaves similar, but often smaller, mostly 5-15 x 1.5-6 mm, oblong-elliptic to spathulate, often folded lengthwise, apex recurved, all with both surfaces loosely grey-woolly. Heads heterogamous, campanulate, ±3-4 x 2-2.5 mm, sessile or shortly pedunculate, crowded in terminal glomerules ±5-15 mm across. Involucral bracts in 3-4 series, outermost short, webbed with wool to leaves, inner subequal, exceeding flowers, backs woolly, tips usually acuminate, often markedly squarrose, rarely only acute, dull yellow, orange or red, sometimes red above the stereome. Receptacle nearly smooth. Flowers 20-37, (1-)2-7 female, 18-30 homogamous, yellow, sometimes tipped red. Achenes 0.75 mm long, with myxogenic duplex hairs, or rarely glabrous. Pappus bristles equalling corolla, barbellate above, scabrid below, bases cohering lightly by patent cilia. Flowers from July to October, mainly in September.
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Grey-woolly, annual herb. Stems 15-150 mm long, many from the crown, slender, prostrate, often ± red, distantly leafy, leaves crowded under capitula and at crown. Leaves: radical leaves often withered at flowering, 15-30 x 5-10 mm, oblong-elliptic to spathulate; cauline leaves similar but smaller, often folded lengthwise, apex recurved. Capitula heterogamous, campanulate, 3-4 x 2.0-2.5 mm, in terminal glomerules 5-15 mm in diam.; involucral bracts in 3 or 4 series, outer webbed to leaves, inner dull yellow, orange or red. Flowers 20-37, yellow, sometimes tipped red. Flowering time July-Oct., mainly Sept. Pappus of bristles, barbellate above, scabrid below. Cypselae 0.75 mm long, with duplex hairs or glabrous.
Mat-forming annual, with slender, sparsely leafy branches except under flowerheads. Leaves oblong-elliptic to spathulate, folded, mostly 15-30 x 5-10 mm, apex recurved, loosely grey-woolly. Flowerheads in leafy, terminal glomerules, disciform, campanulate, ± 3-4 mm long, bracts 3-or 4-seriate, acuminate and squarrose, inner caducous, translucent golden or reddish, woolly below; florets 20-40.
Mat-forming, grey-woolly annual like H. litorale but heads smaller, ± 3-4 x 2.0-2.5 mm, involucral bracts acuminate and hooked, and pappus uniseriate.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system tap-root
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 -
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 leontonyx world distribution map, present in Namibia and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:212954-1
WFO ID wfo-0000065517
COL ID 3K6VR
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Helichrysum leontonychium Helichrysum leontonyx Gnaphalium leontonyx