Helichrysum ammitophilum Hilliard

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Perennial herb with a slender woody creeping rootstock, stems tufted, simple or branching at or near the base, erect to ±150-200 mm, white-felted, closely leafy. Leaves mostly 8-15 x 0.5-1 mm, diminishing slightly upwards, suberect, imbricate, linear, apex acute, mucronate, sometimes strongly recurved, base broad, margins revolute, lower surface white-felted, upper with thin 'tissue-paper' indumentum of woolly hairs. Heads heterogamous, oblong-campanulate, ±3 x 2 mm, many in compact terminal clusters 10-15(-30) mm across. Involucral bracts in ±4 series, thinly webbed together with wool, graded, closely imbricate, inner nearly equalling flowers, pellucid, straw-coloured, tips tawny, occasionally purplish, blunt, crisped-denticulate, somewhat squarrose. Receptacle shortly toothed. Flowers 18-31, 8-15 female, 9-18 homogamous, female sometimes equalling or outnumbering homogamous, bright yellow. Achenes not seen, ovaries with myxogenic duplex hairs. Pappus bristles many, nearly equalling corolla, scabridulous, bases cohering by patent cilia.
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Perennial herb, up to 200 mm high; tufts of stems from creeping rootstock, simple or branched at or near base, erect, white-felted, closely leafy. Leaves: blade linear, mostly 8-15 x 0.51.0 mm, suberect, imbricate, apex acute, mucronate, sometimes strongly recurved, base broad, margins revolute, upper surface with thin, tissue paper-like indumentum of woolly hairs, lower surface white-felted. Heads disciform, oblong-campanulate, ± 3 x 2 mm, in compact, terminal clusters. Involucral bracts in ± 4 series, thinly webbed together with wool, graded, closely imbricate, inner nearly equalling florets, pellucid, straw-coloured, tips tawny, blunt, crisped-denticulate, ± squarrose, stereome divided. Receptacle epaleate, shortly toothed. Flowers: female and disc florets 18-31, 8-15 female; corolla of disc florets campanulate above, bright yellow; Jan.-Mar. Fruit with cypsela? (and ovary) hairy. Pappus of many barbellate bristles, bases cohering by patent cilia.
Stems erect, up to ± 150-200 mm, white-felted, closely leafy. Leaves mostly 8-15 x 0.5-1.0 mm, suberect, imbricate, apex acute, mucronate, base broad, upper surface with thin, tissue paper-like indumentum of woolly hairs, lower surface white-felted. Capitula heterogamous, oblong-campanulate, ± 3 x 2 mm, clusters 10-30 mm in diam.; involucral bracts in ± 4 series, thinly webbed together with wool, graded, pellucid, straw-coloured, apex tawny, blunt, crisped-denticulate, ± squarrose. Receptacle shortly toothed. Flowers 18-31, bright yellow. Flowering time Feb. Pappus of many bristles, ± equalling corolla.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.2
Root system creeping-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) 8-11

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 ammitophilum world distribution map, present in Lesotho and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:900008-1
WFO ID wfo-0000081383
COL ID 3K6CB
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Helichrysum ammitophilum