Helichrysum sessilioides Hilliard

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Much-branched cushion-forming dwarf shrub, very compact, smoothly rounded in outline, old main stems woody, gnarled, up to 10 mm diam., branches densely tufted, leafy. Leaves 4-15 x 1-5 mm, closely imbricate, rosulate when viewed from above, linear to lanceolate-elliptic, upper surface with smooth sericeous 'tissue-paper' indumentum, green with a silvery sheen, drying silvery grey, white-felted below. Heads homogamous, campanulate, 10-15 mm long, nearly double that when radiant, sessile, solitary at the tips of the branchlets. Involucral bracts in 8-12 series, graded, closely imbricate, much exceeding the flowers, outermost palest brown or sometimes rose-pink or crimson, inner white or tinged rose, opaque. Receptacle very shortly honeycombed. Flowers 37-118, yellow. Achenes 2 mm long, elliptic, with myxogenic duplex hairs. Pappus bristles many, equalling corolla, scabrid, bases cohering lightly by patent cilia.
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Dwarf shrub, up to 100 mm high; cushion-forming, compact, branches densely tufted, leafy. Leaves closely imbricate, rosulate when viewed from above; blade linear to narrowly obovate, 4-15 x 1-5 mm, upper surface with silky, tissue paper-like indumentum, green with silvery sheen, drying silver-grey, lower surface white-felted. Heads discoid, campanulate, 10-15 x ± 25 mm, sessile, solitary at branch tips. Involucral bracts in 8-12 series, graded, closely imbricate, much exceeding florets; outer pale brown, rose-coloured or crimson; inner white or tinged rose, opaque, radiating, stereome divided. Receptacle epaleate, shortly honeycombed. Flowers: disc florets only, 37-118; corolla campanulate above, yellow; Oct. Fruit with cypsela hairy. Pappus of many barbellate bristles, bases cohering lightly by patent cilia.
Cushion-forming, dwarf shrublet, branches densely tufted, leafy. Leaves 4-15 mm long, imbricate, rosulate, linear to lanceolate-elliptic, upper surface with silky, tissue paper-like indumentum, green with silvery sheen, drying silver-grey, lower surface white-felted. Capitula campanulate, 10-15 mm long, sessile, solitary at branch tips; involucral bracts in 8-12 series, graded, outer pale brown, rose or crimson, inner white or tinged rose, opaque. Receptacle ± honeycombed. Flowers 37-118, yellow. Flowering time July-Dec. Pappus of many bristles, bases cohering lightly by patent cilia. Cypselae 2 mm long, elliptic, hairy.
Life form -
Growth form shrub
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.08 - 0.1
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 1-5
Soil texture 7-8
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 -

Images

Helichrysum sessilioides unspecified picture

Distribution

Helichrysum sessilioides world distribution map, present in Lesotho and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:213324-1
WFO ID wfo-0000001267
COL ID 3K79J
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Helichrysum sessilioides Helichrysum aretioides Bryomorphe aretioides