Helichrysum setosum Harv.

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Herb, sometimes described as annual but usually woody at the base, 0.2–1.5(–2) m high, densely branched, viscid and aromatic; branches often reddish, glandular-scabrid.. Leaves sessile, lanceolate, 2–7.5 cm long, 0.5–2 cm wide, base cordate and semi-amplexicaul, apex acute and mucronate, glandular and scabrid on both surfaces and often woolly on the adaxial midrib (and sometimes on the margins), young leaves sometimes cobwebby all over.. Capitula 8–12 mm long but up to 2.8 cm in diameter, heterogamous, solitary and terminal but the plant branched densely to form a large leafy corymb with many heads; stalks of individual capitula absent or hidden by the distal leaves; phyllaries shiny, bright or golden yellow, spreading, multiseriate, ovate or elliptic, 4–10 mm long; receptacle honeycombed, 10–12 mm in diameter.. Florets yellow or orange-yellow, several hundred; outer florets many (but fewer than inner), tube filiform from a cylindric base, 2.2–3.3 mm long, lobes 0.1–0.2 mm long, glandular, style 2.4–3.6 mm long; inner florets many, tube cylindric, 2.7–3.2 mm long, lobes 0.3–0.4 mm long, anthers 1.3–1.5 mm long, style 3–3.6 mm long.. Achenes ellipsoid, 0.5–1 mm long, glabrous; pappus pale yellow, 2.5–4 mm long, subplumose distally, falling individually.
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Herbaceous perennial or subshrub, branched from the base, stock with vegetative buds or small leaf tufts, stems up to 1 m tall, but often only ±500 mm, woody, brittle, glandular-setose, uppermost parts sometimes white-cobwebby as well, closely leafy. Leaves mostly 20-50 x 10-20 mm, slightly smaller on the inflorescence branches, mostly oblong-ovate often becoming elliptic-lanceolate to lanceolate on the inflorescence branches, obtuse to acute, mucronate, base broad, more or less cordate-clasping, both surfaces and margins glandular-setose, margins and sometimes the midline above sometimes woolly as well, young leaves sometimes cobwebby all over. Heads heterogamous, 10-12(-14) mm long, about double that across the radiating bracts, depressed-globose, solitary at the tips of long leafy branchlets corymbosely arranged. Involucral bracts in ±9 series, graded, imbricate, inner much exceeding the flowers, glossy, yellow often overlaid pale brown outside. Receptacle shortly honeycombed or nearly smooth. Flowers ±480-1100, 65-160 female, 400-950 homogamous. Achenes 1 mm long, glabrous. Pappus bristles many, equalling the corolla, tips barbellate, shaft scabrid, base with patent cilia cohering or not.
Perennial herb or dwarf shrub, up to 1 m high; stems woody, branched from base, glandular-setose, upper parts sometimes white-cobwebby, closely leafy. Leaves: blade oblong-ovate, becoming elliptic-ovate to narrowly ovate on inflorescence branches, 20-50 x 10-20 mm, smaller upwards, apex obtuse to acute, mucronate, base broad, ± cordate clasping; both surfaces and margins glandular-setose, margins and midline above sometimes woolly. Heads disciform, 10-12(-14) x ± 25 mm, depressed-globose, solitary at tips of long, leafy branchlets, corymbosely arranged. Involucral bracts in ± 9 series, graded, imbricate, inner much exceeding florets, glossy, yellow, often overlaid pale brown outside; radiating, stereome divided. Receptacle epaleate, shortly honeycombed or nearly smooth. Flowers: female and disc florets 480-1100, 65-160 female; corolla of disc florets cylindric, yellow; Jan.-Apr. Fruit with cypsela glabrous. Pappus of many barbellate bristles, base with patent cilia, cohering or not.
Perennial herb or shrub, up to 1 m high. Leaves 20-50 x 10-20 mm, smaller upwards, oblong-ovate, becoming elliptic-lanceolate to lanceolate on inflorescence branches; both surfaces and margins glandular-setose, margins and midline above sometimes woolly. Heads 10-12(-14) mm long, depressed-globose, solitary at tips of long leafy branchlets corymbosely arranged. Flowers with yellow involucral bracts.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 1.0
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 -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Uses medicinal
Edible -
Therapeutic use Bite(Snake) (unspecified)
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 setosum unspecified picture

Distribution

Helichrysum setosum world distribution map, present in Mozambique, South Africa, Zambia, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:213326-1
WFO ID wfo-0000131037
COL ID 3K79L
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Gnaphalium setosum Helichrysum setosum