Pterostylis exalla (D.L.Jones) G.N.Backh.

Species

Angiosperms > Asparagales > Orchidaceae > Pterostylis

Characteristics

Rosette leaves 5–8, oblong to ovate, 7–25 x 4–10mm. Flower stem 50–15  tall, 1–1.  across, 2–6-flowered. Stem bracts 2–4. Flowers porrect to semi-nodding, hairy, 27–30 x 9–12mm, translucent white with brown bands in galea, lateral sepals light brown to dark brown with chequered patterns. Dorsal sepal point filamentous, 3–  long, porrect to upcurved. Lateral sepals deflexed, wider than hood, usually concave, margins incurved, sparsely hairy; free points filamentous, 9–1  long, divergent, curved forwards or outwards. Petals with very small basal flanges, 9–12 x 4.5–5mm. Labellum oblong, 4–5 x 1.5–2mm, brown, thick, fleshy, broadly channelled, hairy; margins with 6–10 white bristles to 2.  long; basal lobe as wide as blade, glabrous or with few short bristles.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Localised, although sometimes locally common, growing in woodland dominated by native pines with an open grassy understorey in freely draining white sand over limestone.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Pterostylis exalla world distribution map, present in Australia

Identifiers

LSID urn:lsid:ipni.org:names:77105207-1
WFO ID wfo-0000918590
COL ID 4Q6FT
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Oligochaetochilus exallus Pterostylis exalla