Pterostylis mutica R.Br.

Midget greenhood (en)

Species

Angiosperms > Asparagales > Orchidaceae > Pterostylis

Characteristics

Plant small, c. 2–10 cm. tall at fl. Stem ± hidden by lfy bracts. Rosette lvs ∞, c. 5–15 × 3–10 mm.; lamina almost rhombic, not clearly distinct from broadly winged petiole, firm-textured, sts alveolate, bluish or yellowish green or brownish; cauline lvs smaller, sheathing. Fls (1)–2–6, each with a sheathing floral bract; per. greenish or brownish with pale stripes. Dorsal sepal 5–10 mm. tall, broad, apiculate; lateral sepals little shorter, almost completely connate into a flat lamina bidentate at tip, strongly deflexed in fully open fl. Petals shorter than dorsal sepal, the anterior margin minutely denticulate. Labellum short, broad, obtuse, produced backwards into a smoothly rounded appendage with a low median ridge. Column short, broad; wings broader than long, ciliate over most of their free margins; stigma broadly oval.
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Rosette leaves 5–12, ovate to elliptic, 10–45 x 5–18mm, green, fleshy, margins entire or slightly wavy. Flower stem 120–35  tall, 2–22-flowered. Sterile bracts 2–5. Flowers well spaced, translucent green with faint darker green stripes (sometimes almost transparent), 10–14 x 3–4.5mm. Lateral sepals deeply pouched, 6–7 x 7–  when flattened. Petals 7–9.5 x 3.5–4.5mm, translucent green with darker veins, margins with beaded siliceous cells. Labellum oblong to elliptic, 2.5–3 x 2.5–3mm, whitish-green with darker green recurved appendage c.2.2 x 1.3mm, with thickened margins and short blunt central ridge.
An orchid. It is a small herb. It keeps growing from year to year. It forms tubers. It grows 10-20 cm high. It has one stem. The leaves are in a ring at the base. There are 5-14 leaves. The flowers are green. There are 2-20 small flowers crowded in a spike arranged like a spiral. Each flower is about 1 cm long. The flowers have a hood.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.06 - 0.15
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Flower color
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Nitrogen fixer -
Photosynthetic pathway -

Environment

Widespread and common from mountains to inland plains, growing in grassy forest, Callitris forest, mallee communities, woodland and grassland in freely draining loam and clay loam; uncommon to rare in coastal and near-coastal sites.
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It grows in warm temperate places. It grows on clay and clay loam soils.
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Hardiness (USDA) 7-11

Usage

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

Cultivation

Mode -
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Images

Pterostylis mutica unspecified picture

Distribution

Pterostylis mutica world distribution map, present in Australia and New Zealand

Conservation status

Pterostylis mutica threat status: Least Concern

Identifiers

LSID urn:lsid:ipni.org:names:655338-1
WFO ID wfo-0000288525
COL ID 4Q6HQ
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Oligochaetochilus muticus Pterostylis mutica Hymenochilus muticus