Helichrysum obtusum Moeser

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Shrublet, main stem very short, 5-50 x 5-10 mm, bare, woody, gnarled, branches numerous, intricate, spreading, forming a dense cushion up to 150 x 300 mm, often much smaller, white silky-woolly-felted, leafy. Leaves mostly 4-10 x 2-5 mm, oblong-lanceolate to broadly elliptic or suborbicular, narrowed below in broader leaves, half-clasping, apex subacute, recurved, margins undulate, both surfaces densely white-woolly-felted. Heads heterogamous, very rarely homogamous, campanulate, ±4 x 4 mm, solitary or few clustered at the tips of the branchlets, closely surrounded by leaves. Involucral bracts in 3-4 series, subequal, loosely imbricate, about equalling the flowers, not radiating, obtuse, often emarginate, golden-brown to buff or whitish, often red-purple above stereome, stereome woolly outside, outer bracts and surrounding leaves webbed together with wool. Receptacle nearly smooth. Flowers (12-)20-42, (0-)2-9 female, 12-33 homogamous. Achenes not seen, ovaries with myxogenic duplex hairs, or very rarely glabrous. Pappus bristles many, about equalling corolla, scabrid, bases with patent cilia, not cohering. Flowering noted in all months, but chiefly in September.
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Dwarf shrub, up to 150 mm high; main stem 5-50 mm long, bare, woody; branches intricate, spreading, forming a dense cushion up to 150 x 300 mm, white-silky or woolly felted, leafy. Leaves: blade oblong-obovate to suborbicular, 4-10 x 2-5 mm, narrowed below, ± clasping, apex subacute, recurved, margins undulate, both surfaces densely white-woolly felted. Heads disciform, rarely discoid, campanulate, 4 x 4 mm, solitary or few clustered terminally, closely surrounded by leaves. Involucral bracts in 3 or 4 series, subequal, loosely imbricate, ± equalling florets, not radiating, tips obtuse, often emarginate, golden-brown to buff-coloured or whitish, often red-purple above stereome; outer webbed to surrounding leaves, stereome divided. Receptacle epaleate, nearly smooth. Flowers: female and/or only disc florets 1242, 0-9 female; corolla of disc florets funnel-shaped, yellow; Oct. Fruit with cypsela? (and ovary) hairy or rarely glabrous. Pappus of many barbellate bristles, bases with patent cilia, not cohering.
Shrublet, main stem 5-50 mm long, bare, woody. Branches forming a dense cushion up to 150 x 300 mm, white-silky or woolly-felted, leafy. Leaves 4-10 x 2-5 mm, oblong-lanceolate to suborbicular, narrowed below, ± clasping, apex recurved. Capitula campanulate, 4 x 4 mm, solitary or few clustered terminally; involucral bracts in 3 or 4 series, not radiating, obtuse, golden-brown to whitish or red-purple, outer bracts webbed to surrounding leaves. Receptacle ± smooth. Flowers 12-42. Flowering time all year, mainly Sept. Pappus of many bristles, bases with patent cilia, not cohering. Cypselae hairy or glabrous.
Gnarled, cushion-forming, dwarf shrublet, up to 300 mm tall. Leaves oblong to suborbicular, undulate, apex recurved, mostly 4-10 x 2-5 mm, densely white-felted. Flowerheads solitary or few nested among leaves, disciform (rarely discoid), campanulate, ± 4 mm long, bracts 3-or 4-seriate, obtuse, whitish to brown or reddish, florets 12-40.
Life form -
Growth form shrub
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.15
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 4-8
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

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 obtusum world distribution map, present in Namibia and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:213111-1
WFO ID wfo-0000021415
COL ID 3K72Q
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Helichrysum obtusum Helichrysum dinteri var. obtusum Helichrysum obtusum var. obtusum