Helichrysum acutatum Dc.

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Perennial herb, rootstock stout, woody, crown sometimes woolly, flowering stems solitary or several together, erect to 450(-600) mm, simple, cobwebby to woolly-tomentose, leafy in the lower part, pedunculoid and bracteate upwards. Radical leaves up to 250(-350) x 50(-80) mm, ± a third to one half of the length petiolar, blade elliptic or ovate-elliptic tapering smoothly or more abruptly into the long, winged petiole, base expanded and clasping, apex acute, both surfaces glandular-punctate, often thinly or thickly glandular-pubescent, frequently lightly cobwebby to densely greyish-woolly as well, conspicuously triplinerved; cauline leaves similar but soon sessile, oblong-lanceolate, very acute to long acuminate passing into distant linear-lanceolate acuminate bracts. Heads homogamous, oblong-campanulate, ±5-7 x 3 mm, many in dense corymbose clusters corymbosely arranged. Involucral bracts in ±4 series, closely imbricate, outermost webbed together with wool, inner slightly shorter than or equalling the flowers, tips acute or very acute, pellucid, bright yellow, not radiating. Receptacle shortly honeycombed. Flowers 7-13. Achenes 1.25 mm long, with myxogenic duplex hairs. Pappus bristles many, slightly shorter than corolla, scabridulous, bases cohering strongly by patent cilia, some light fusion as well.
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Perennial herb; flowering stems 0.45-0.60 m high, solitary or several together, erect, simple, cobwebby to woolly tomentose, leafy in lower part, pedunculoid and bracteate upwards. Leaves: blade of basal leaves elliptic or ovate-elliptic up to 250(-350) x 50(-80) mm, tapering into winged petiole, apex acute, becoming smaller upwards, oblong-linear, sessile; glandular-pubescent or lightly cobwebby to thickly tomentose, with prominent nerves. Heads discoid, oblong-campanulate, 5-7 x 3 mm, many in dense, corymbose clusters. Involucral bracts in ± 4 series, densely imbricate, outer webbed together with wool, inner slightly shorter than or equalling florets, tips acute, bright yellow, not radiating, stereome divided. Receptacle epaleate, shortly honeycombed. Flowers: disc florets only, 7-13; corolla narrowly campanulate above, yellow; Oct.-Jan. Fruit with cypsela (and ovary) hairy. Pappus of many barbellate bristles, bases cohering strongly by patent cilia, some light fusion as well.
Variable perennial herb, rootstock stout. Stems solitary or several, erect, up to 600 mm long, simple, cobwebby to woolly-tomentose. Leaves: radical leaves up to 350 x 80 mm, blade elliptic or ovate-elliptic, tapering into a long, winged petiole, base expanded, clasping, both sides glandular-punctate, often glandular-pubescent, often cobwebby to densely grey-woolly also, 3-nerved; cauline leaves similar, soon sessile, oblong-lanceolate, becoming distant, linear-lanceolate bracts. Capitula oblong-campanulate, 5-7 x 3 mm, many in corymbose clusters, these in dense corymbose panicles; involucral bracts in 4 series, outer webbed with wool, pellucid, bright yellow. Flowers 7-13. Flowering time Sept.-Jan. Pappus of many bristles. Cypselae 1.25 mm long.
Perennial herb, 0.45-0.60 m high. Leaves elliptic or ovate-elliptic to oblong-lanceolate, becoming smaller upwards, lower tapering into winged petiole, upper sessile, glandular-pubescent or lightly cobwebby to thickly tomentose. Heads oblong-campanulate, 5-7 mm long, in dense corymbose clusters, involucral bracts densely imbricate. Flowers with bright 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) 0.45 - 0.6
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 5-6
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 acutatum world distribution map, present in Lesotho, eSwatini, South Africa, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:212348-1
WFO ID wfo-0000093390
COL ID 3K6B2
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Helichrysum schlechteri Helichrysum danae Helichrysum acutatum Gnaphalium acutatum Helichrysum floccosum Helichrysum acutatum var. acutatum Helichrysum acutatum var. rhombifolium Helichrysum galpinii var. galpinii