Grevillea johnsonii Mcgill.

Johnson’s grevillea (en)

Species

Angiosperms > Proteales > Proteaceae > Grevillea

Characteristics

Single-trunked shrub 2-4.5 m high. Leaves 9-25 cm long, usually 2-10-partite with ascending lobes 8-15 cm long, the lowermost sometimes again bipartite, rarely a few leaves entire; simple leaves and lobes linear, 0.7-1.5 (-2) mm wide, not pungent; margins revolute usually enclosing lower surface except for midvein; lower surface bisulcate, silky in grooves or on exposed lamina. Conflorescence erect, terminal on short lateral branchlets, simple or few-branched; unit conflorescence basipetal, shortly and loosely cylindrical or a loose irregular cluster, ultimate rachis 4-12 mm long. Flowers basiscopic. Flower colour: perianth pale to deep pink with cream limb, or occasionally uniformly orange; style reddish. Perianth sericeous outside with reddish biramous hairs only, becoming scattered near apex, pubescent inside around and below ovary. Pistil 26-37 mm long; ovary subsericeous to villous; style sericeous at base becoming glabrous above. Follicle obloid-ellipsoidal to subglobose, 12-16 mm long, rugulose, subsericeous to tomentose.
Life form -
Growth form shrub
Growth support free-standing
Foliage retention evergreen
Sexuality -
Pollination -
Spread -
Mature width (meter) 1.5 - 2.5
Mature height (meter) 1.75 - 3.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Grows in eucalypt woodland in rocky situations on sandstone.
Light 7-9
Soil humidity -
Soil texture -
Soil acidity 2-6
Soil nutriment -
Hardiness (USDA) 11-11

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by cuttings. Seeds needs soaking.
Mode cuttings
Germination duration (days) 20 - 25
Germination temperacture (C°) 23 - 26
Germination luminosity light
Germination treatment soaking
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Grevillea johnsonii unspecified picture

Distribution

Grevillea johnsonii world distribution map, present in Australia

Conservation status

Grevillea johnsonii threat status: Near Threatened

Identifiers

LSID urn:lsid:ipni.org:names:703870-1
WFO ID wfo-0000709274
COL ID 3HCRN
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Grevillea johnsonii