Helichrysum rudolfii Hilliard

Species

Angiosperms > Asterales > Asteraceae > Helichrysum

Characteristics

Shrubby, up to 1 m tall, branches greyish-white felted, closely leafy, more distantly so on flowering twigs. Leaves 10-40 x 3-30 mm, diminishing slightly upwards, rhomboid-elliptic or ovate, gradually, or sometimes abruptly, tapering to a slender petiole roughly 1/4 to nearly 1/2 the total leaf length, base expanded, half-clasping, apex acute to very acute in narrower leaves, mucronate, margins flat, upper surface thinly and persistently woolly, glandular-puberulous beneath the wool, lower surface white-tomentose. Heads homogamous, campanulate, 5 x 4-5 mm, double that across the radiating bracts, many in cymose-corymbose clusters terminating the branchlets. Involucral bracts in ±5 series, outermost short, inner subequal, very loosely imbricate, slightly exceeding flowers, subacute to obtuse, smooth or slightly crisped, glossy, tips opaque white. Receptacle with fimbrils exceeding the ovaries. Flowers 21-32, yellow. Achenes 1 mm long, ±cylindric, obscurely and irregularly ribbed, glabrous. Pappus bristles many, equalling corolla, scabrid, bases cohering strongly by patent cilia. Flowering mainly between April and June, but flowers can possibly be found in any month.
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Shrub, up to 1 m high. Leaves 10-40 x 3-30 mm, rhomboid-elliptic or ovate, petiolate, upper surface thinly and persistently woolly, lower white tomentose, margins flat. Heads campanulate, many in cymose-corymbose clusters. Involucral bracts smooth. Flowers yellow; tips of involucral bracts opaque white; February to June and September to November.
Life form -
Growth form shrub
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 7-8
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 rudolfii world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:900026-1
WFO ID wfo-0000041752
COL ID 3K77X
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Helichrysum rudolfii