Caladenia sigmoidea R.S.Rogers

Sigmoid spider orchid (en)

Species

Angiosperms > Asparagales > Orchidaceae > Caladenia

Characteristics

Leaf 70–120 × 2–3 mm. Flower stem 50–150 mm tall, 1-or 2-flowered. Flowers 20–30 mm across, pale yellow with broad red stripes; sepals and petals with thick, brownish to dark red clubs 4–6 mm long. Dorsal sepal erect, 15–20 × 1–1.5 mm. Lateral sepals stiffly decurved, 15–20 × 1.5–2 mm. Petals erect to upswept, 15–20 × 1 mm. Labellum 8–10 × 5–6 mm, whitish red with dark red lines; margins with 3–6 pairs of short, blunt teeth; apex upcurved in an S-shape, with a thickened, dark red, glandular club. Calli anvil-shaped, red, 5–8 pairs in 2 rows. Column 6–8 × 2.5–3 mm, translucent with reddish markings; basal glands absent.
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Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
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Mature height (meter) 0.05 - 0.15
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Environment

Locally common; growing in mallee vegetation, granite outcrops and on sheltered slopes of banded ironstone hills, in freely draining, gravelly or stony soil; often found growing in accumulations of leaves and litter.
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Cultivation

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Distribution

Caladenia sigmoidea world distribution map, present in Australia

Identifiers

LSID urn:lsid:ipni.org:names:620732-1
WFO ID wfo-0000735215
COL ID PBXR
BDTFX ID -
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Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Jonesiopsis sigmoidea Caladenia sigmoidea Calonema sigmoideum Calonemorchis sigmoidea