Seeds of South Australia
Caladenia fulva (Orchidaceae)
Tawny Spider-orchid
List of species for Caladenia
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Seed collecting:
December to January
Herbarium region:
South Eastern
NRM region:
South East
IBRA regions
Lucindale (NCP03)Naracoorte Coastal Plain
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Probable Decline)   [taxonomic issues]
Lowan Mallee (MDD04)Murray Darling Depression
 Endangered   (IUCN: EN B2ab(i,ii,iii))   (Definite Decline)   [could be extinct]
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 Caladenia]
Name derivation:
Caladenia from the Greek 'callos' meaning beauty and 'aden' meaning a gland; referring to the colourful labellum and the glistening glands at the base of the column that adorn many of the species. Fulva from the Latin 'fulvum' meaning tawny; referring to the colour of the labellum, outer sepals and buds.
Distribution:
Found in the south-east of South Australia, growing in woodland and open forest. Also found in Victoria.
Status:
Native. Very rare in South Australia. Very rare in Victoria.
Plant description:
A large spider orchid that grows to 25 cm tall with one or two flowers. It has a single basal leaf to 15 cm long. Flowers are pale yellow with variable red streaking, the labellum lamina, calli and marginal teeth are deep red, tepals are 80 mm long. Flowering between August and October.
Fruit type:
Brown papery ellipsoid capsule.
Seed type:
Very small brown ellipsoid seed with a long cylindrical translucent brown mesh-like covering.
Seed collecting:
Collect fat capsules as they start to dry and turn brown. Pods will split and release the seeds quickly and will require monitoring. To increase the chances of collecting mature pods, it is recommended that a small breathable bag (ie. Organza bags) be used to enclose the developing capsules.
Seed cleaning:
Place the capsules in a container that will hold fine seeds and leave to dry for a few weeks or until the capsule split. Then carefully hold the capsule and tap it gently to release the seeds. 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 or in liquid nitrogen.
Seed viability:
For the NVC South East Orchid Project a total of five populations consisting of more than X individuals in total were recorded from the Geegeela Conservation Park. Approximately 1,575,000 seeds (0.58g) were banked for these five observed populations. Seed viability ranged from 56% to 88%.