Pterostylis arenicola M.A.Clem. & J.L.Stewart

Sandhill rustyhood (en)

Species

Angiosperms > Asparagales > Orchidaceae > Pterostylis

Characteristics

Rosette leaves 8–12, elliptic, 15–30 x 6–12mm. Flower stem 100–25  tall, 2–  across, 1–10-flowered. Stem bracts 2–4. Flowers porrect to semi-erect, 30–35 x 10–12mm, translucent white with prominent red-brown lines and markings. Dorsal sepal point filamentous, 9–1  long, porrect to upcurved. Lateral sepals much wider than hood, shallowly concave, margins flat, densely hairy; free points filamentous, 10–2  long, divergent. Petals with relatively small basal flanges, 14–16 x 5mm. Labellum ovate to obovate, 5–7 x 1.6–2.2mm, thick, fleshy, dark brown, broadly channelled, shortly hairy; margins with 6–10 forward-pointing bristles 1–  long; basal lobe thick, with numerous hairs and short bristles.
Life form perennial
Growth form herb
Growth support free-standing
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Sexuality hermaphrodite
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Environment

Widespread in near-coastal areas but disjunct, growing among sedges, tussocks and small shrubs in mallee communities and under broombush; also in woodland dominated by slender cypress pine and drooping sheoak in freely draining red sands, sand mixed with limestone and clay loam.
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Cultivation

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Distribution

Pterostylis arenicola world distribution map, present in Australia

Identifiers

LSID urn:lsid:ipni.org:names:938984-1
WFO ID wfo-0000288426
COL ID 4Q6DV
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Pterostylis arenicola Oligochaetochilus arenicola