Seeds of South Australia
Senecio linearifolius var. linearifolius (Compositae)
Fireweed Groundsel
List of species for Senecio
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Seed collecting:
January to April
Herbarium region:
Southern Lofty
NRM region:
Adelaide and Mount Lofty Ranges
IBRA region
Mount Lofty Ranges (FLB01)Flinders Lofty Block
 Endangered   (IUCN: )   (Probable Decline)   [1 population]
RSCA map:
Regional Species Conservation Assessments per IBRA subregion. Please click the thumbnail map.
AVH map:
Australian distribution map (external link)
SA Census:
Census of South Australian plants (external link)     [genus Senecio]
Name derivation:
Senecio from the Latin 'senex' meaning an old man; referring to the white pappus attached to the seed. Linearifolius from Latin meaning linear leaves; referring to the narrow long straight leaves.
Distribution:
Currently only known from one location in the southern Mount Lofty Ranges in South Australia, growing in a swamp. Also found in Victoria and Tasmania.
Status:
Native. Very rare in South Australia. Common in the other states.
Plant description:
Slender to shrubby aromatic perennial to 1.5 m high. Upper-stem leaves very narrow-elliptic, narrow-lanceolate or linear to narrow-linear, to 15 cm long, base with lobe largely discontinuous with lamina, entire or with a smaller lobe or segment near base and on proximal margin. Inflorescence in dense clusters with bright yellow daisy flowers. Flowering between November and March.
Fruit type:
Pale brown daisy head.
Seed type:
Brown cylindrical seed to 2 mm long and 0.5 mm wide, covered in short hairs, usually with no pappus which fall off easily.
Embryo type:
Spatulate fully developed.
Seed collecting:
Collect heads that are large and fluffy. Either pick off the whole heads or use your finger and pull off the seeds from the head. Mature seeds will come off easily.
Seed cleaning:
Place the heads in a tray for a week to dry. No cleaning is required if only pure seeds are collected. If heads are collected, then rub the heads gently with your hands to dislodge the seeds. Viable seeds will be fat and hard. Store the seeds with a desiccant such as dried silica beads or dry rice, in an air tight container in a cool and dry place.
Seed viability:
From one collection, the seed viability was high, at 80%.