Helichrysum herbaceum (Andrews) Sweet

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Stoloniferous perennial herb, flowering stems up to 400 mm tall, solitary or few together, simple or forking above, closely leafy throughout. Radical leaves more or less rosulate, spreading, elliptic or obovate, up to 50 x 20 mm, loosely cobwebby above at first, later glabrous except for a few coarse hairs, white-felted below; cauline leaves 10-20(-25) x 1-2(-5) mm, erect, more or less imbricate, commonly linear to linear-lanceolate, sometimes broader, acute to acuminate, base broad, clasping, margins often revolute, upper surface greyish-white cobwebby, lower loosely felted. Heads heterogamous, or rarely homogamous, campanulate, 18-20 mm long, 26-28 mm across the fully radiating bracts, solitary at the tips of the branches, or sometimes in a few-headed corymb. Involucral bracts in ±8 series, often descending on the peduncle, closely imbricate, outer shorter and broader than inner, glossy, golden brown, inner lemon-yellow sometimes washed brown outside, much exceeding the flowers, acute or obtuse. Receptacle shortly honeycombed. Flowers 102-209, (0-2-)14-38 female, 80-183 homogamous. Achenes 1.25 mm, narrowly cylindric, glabrous. Pappus bristles many, equalling corolla, tips barbellate, bases not cohering.
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Perennial herb 0.3–0.6 m high, stoloniferous, the stems solitary or few, simple or branching, densely leafy; stems pubescent.. Leaves greyish, sometimes rosette leaves present (these obovate, to 5 cm long and to 2 cm wide, but not seen in our area); cauline leaves sessile, linear, 1–3 cm long, 0.1–0.3(–0.5) cm wide, margins revolute, apex acute and mucronate, grey-pubescent and glabrescent above (or rarely scabrid), tomentose beneath.. Capitula 16–22 mm long, heterogamous, terminal and solitary, but sometimes stems branching and distal part forming an inflorescence; stalks of individual capitula 0–3 mm long; phyllaries yellow, the outermost shiny and varying from brown-tinged lemon yellow to greenish yellow, multiseriate, 4–17 mm long, acute, stereome hairy or glandular; receptacle honeycombed.. Florets yellow to orange; outer ones few (10–40), tube narrowly cylindric, 4.2–4.4 mm long, lobes ± 0.3 mm long, style 5–5.2 mm long; inner ones many, tube cylindric, 4.1–4.9 mm long, lobes 0.3–0.5 mm long, glandular, anthers 2.1 mm long, style 4.6–4.8 mm long.. Achenes ellipsoid, 1–1.5 mm long, glabrous; pappus yellowish, 4.5–5 mm long, tips subplumose.
Perennial herb; flowering stems up to 400 mm high, solitary or few together, simple or forking above, closely leafy throughout. Leaves in a basal rosette; blade of basal leaves elliptic or obovate, up to 50 x 20 mm, upper surface loosely cobwebby, glabrescent, lower surface white-felted; blade of stem leaves linear to very narrowly elliptic, 10-20(-25) x 1-2(-5) mm, imbricate, apex acute to acuminate, base broad, clasping, margins often revolute, upper surface greyish white cobwebby, lower surface loosely felted. Heads disciform, rarely discoid, campanulate, 18-20 x 26-28 mm, solitary at tips of branches or sometimes in a few-headed corymb. Involucral bracts in ± 8 series, closely imbricate, outer shorter and broader than inner, radiating, glossy, golden-brown, inner lemon-yellow, sometimes washed brown outside, much exceeding florets, tips acute to obtuse, stereome divided. Receptacle epaleate, shortly honeycombed. Flowers: female and/or only disc florets 102-209, 0-38 female; corolla of disc florets funnel-shaped, yellow; Dec.-Apr. Fruit with cypsela glabrous. Pappus of many barbellate bristles, bases not cohering.
Stoloniferous, perennial herb, flowering stems up to 400 mm high, 1-few, closely leafy. Leaves: radical leaves ± rosulate, spreading, elliptic or obovate, up to 50 mm long, loosely cobwebby above, later glabrous, white-felted below; cauline leaves 10-25 mm long, erect, ± imbricate, linear to linear-lanceolate, base broad, clasping, margins revolute, greyish white cobwebby above, ± felted below. Capitula campanulate, 18-20 mm long, ± 27 mm in diam., mostly solitary at branch tips; involucral bracts in ± 8 series, glossy, golden-brown, inner lemon-yellow. Flowers 102-209. Flowering time Oct.-Apr. Pappus of many bristles. Cypselae 1.25 mm long, narrowly cylindric.
Closely leafy, cobwebby shrublet or subshrub to 40 cm. Leaves imbricate, ascending, linear-lanceolate, cobwebby above, felted beneath, margins revolute. Flower heads solitary, sometimes few at branch tips, top-shaped, shiny golden or yellow, glabrous, ± 20 mm long, florets 100-210, ovary glabrous.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.4
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 -
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 herbaceum world distribution map, present in Lesotho, South Africa, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:212848-1
WFO ID wfo-0000023700
COL ID 3K6SB
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Helichrysum diversifolium Helichrysum monocephalum Argyrocome ferruginea Xeranthemum herbaceum Xeranthemum squamosum Gnaphalium squamosum Helichrysum ferrugineum Helipterum ferrugineum Helichrysum splendens Xeranthemum squamosum Helichrysum herbaceum