Thelymitra venosa R.Br.

Large veined sun orchid (en)

Species

Angiosperms > Asparagales > Orchidaceae > Thelymitra

Characteristics

Plant at fl. c. 10–50 cm. tall, often gregarious. Lf linear, fleshy, roundly thickened on margins and keel and so ± trefoil-shaped in T.S. Infl. 1–c. 6-fld. Per. c. 10–15 mm. long, most commonly blue, less commonly white, petals and occ. other tepals strongly striped with darker blue, occ. wholly pink without obvious stripes. Lateral sepals narrow. Petals broad-elliptic. Labellum broadly obovate, sts slightly crenate towards tip or mucronate. Column short; anther bent forward, almost fully exposed, ending in 2 short horns; column-arms ± ribbon-like, tending to twist inwards into ½–1½ turns of a loose spiral, tip sts unevenly notched; post-anther lobe lacking; a narrow band of clear, blister-like, crowded calli lies across back of anther between bases of column-arms and sts extends up their lower margins.
More
Leaf 100–300 × 5–7 mm, often lax, thick, fleshy. Flower stem 400–700 × 2–5 mm, wiry, 1–8-flowered. Sterile bracts 1 or 2. Flowers 35–50 mm across, bright blue with darker blue veins, rarely white or pink. Sepals and petals 16–25 × 8–14 mm, sepals longer than petals. Labellum obovate, larger and more differentiated than in most other sun orchids, margins often crinkled. Column 3–5 × 2.5–3.5 mm, broadly winged, white or mauve; post-anther lobe short, not hooding anther, with bead-like papillae; column arms more or less erect and parallel, 2–3 mm long, yellow, flat, spirally twisted, without apical lobe or tooth. Anther near column apex, with a long, prominent point.
Life form perennial
Growth form herb
Growth support free-standing
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Sexuality hermaphrodite
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Mature height (meter) 0.1 - 0.5
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Environment

Localised; found growing in moss cushions and moist to wet fissures and crevices in sandstone rock ledges in moist to wet, sandy and peaty soil among low shrubs and sedges surrounded by heathy forest.
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Hardiness (USDA) 7-11

Usage

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Cultivation

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Images

Thelymitra venosa unspecified picture

Distribution

Thelymitra venosa world distribution map, present in Australia and New Zealand

Identifiers

LSID urn:lsid:ipni.org:names:660101-1
WFO ID wfo-0000323080
COL ID 569FV
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Macdonaldia venosa Thelymitra venosa Thelymitra venosa var. magnifica