Caladenia hastata (Nicholls) Rupp

Mellblom's spider orchid (en)

Species

Angiosperms > Asparagales > Orchidaceae > Caladenia

Characteristics

Leaf 80–120 × 7–110 mm. Flower stem 250–350 mm tall, 1–3-flowered. Flowers 50–80 mm across, creamy white to yellowish; sepals and petals with relatively thick, dark red-brown to blackish clubs 10–22 mm long. Dorsal sepal erect and incurved, 30–40 × 3–4 mm. Lateral sepals stiffly spreading to stiffly decurved, 30–40 × 4–5 mm, divergent. Petals similarly arranged, 20–30 × 2.5–3.5 mm. Labellum 14–16 × 10–12 mm, cream or white; margins with numerous purplish teeth to 2 mm long; tip recurved. Basal calli 4–6, c. 1.5 mm long, erect. Lamina calli to 1.5 mm long, purplish, in 4 or 6 crowded rows. Column 11–13 × 5–6 mm, transparent with reddish markings; basal glands c. 2 mm long, club-shaped, yellow with a basal stalk.
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Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
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Mature height (meter) 0.25 - 0.35
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Environment

Highly localised and known from five extant populations; growing in dense, coastal heathland and heathy forest dominated by brown stringybark and Willis’s Peppermint (Eucalyptus willisii) in deep, well-drained to moisture-retentive sand close to depressions and other low-lying sites.
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Cultivation

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Distribution

Caladenia hastata world distribution map, present in Australia

Conservation status

Caladenia hastata threat status: Critically Endangered

Identifiers

LSID urn:lsid:ipni.org:names:120806-3
WFO ID wfo-0000728608
COL ID 696QB
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Calonemorchis hastata Arachnorchis hastata Caladenia hastata Calonema hastatum Caladenia patersonii var. hastata