Helichrysum tysonii Hilliard

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Annual herb forming small dense mats up to ±200 mm across, stems many from the crown, well branched, prostrate, rooting, branchlets grey-tomentose, leafy. Leaves 4-10 x 1.5-6 mm, narrowly to broadly spathulate, tips rounded, extreme tip folded and slightly recurved, base broad, clasping, margins flat, both surfaces grey-woolly. Heads homogamous or heterogamous, campanulate, ±4 x 2 mm, many crowded in small terminal glomerules, closely surrounded by leaves, the innermost leaves webbed to the outer involucral bracts. Involucral bracts in ±3 series, outermost short, inner subequal, slightly exceeding flowers, tips very acute, slightly recurved, opaque straw-coloured or reddish. Receptacle nearly smooth. Flowers 19-32, 0-3 female, 19-31 homogamous. Achenes 0.75 mm long, with myxogenic duplex hairs. Pappus bristles many, equalling corolla, scabrid, bases scarcely cohering by patent cilia.
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Small, dense, annual, herbaceous mats, up to 200 mm in diam. Stems rooting, grey-tomentose, leafy. Leaves 4-10 x 1.5-6.0 mm, spathulate, apex folded and ± recurved, both sides grey-woolly. Capitula homogamous or heterogamous, campanulate, 4 x 2 mm, in small, terminal glomerules, innermost leaves webbed to outer involucral bracts; involucral bracts in 3 series, opaque straw-coloured or ± red. Flowers 19-32. Flowering time Sept.-Nov. Pappus of many bristles. Cypselae 0.75 mm long, with duplex hairs.
Life form annual
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 1-3
Soil texture -
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 tysonii world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:900030-1
WFO ID wfo-0000089912
COL ID 3K7DD
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Helichrysum tysonii