Caladenia formosa G.W.Carr

Large crimson spider orchid (en)

Species

Angiosperms > Asparagales > Orchidaceae > Caladenia

Characteristics

Leaf lanceolate, 80–150 × 5–12 mm, hairy. Flower stem 200–600 mm long, hairy, 1-or 2-flowered. Flowers 50–70 mm across, shiny, uniformly dark red to reddish purple or pinkish red; sepals and petals with long, relatively thick, reddish black, densely glandular tips (no clubs), tips covered with chain-like glands consisting of 4–6 cells. Dorsal sepal erect and incurved, 40–80 × 3–5 mm. Lateral sepals spreading widely in basal half, tips shallowly decurved, 40–80 × 5–7 mm, divergent. Petals similarly arranged, 35–65 × 3–4 mm. Labellum 16–20 × 10–12 mm, base pale, rest pink to red or blackish red with darker lines; margins with numerous, thin, red teeth to 3 mm long, reducing in size, but extending to apex; apex strongly recurved. Basal calli 6–8, c. 1.5 mm long, linear. Lamina calli to 1 mm long, red, in 4–6 or 8 crowded rows nearly to labellum apex. Column 12–14 × 4–5 mm, red, narrowly winged; basal glands c. 1.5 mm long, oblong, yellow with a red base.
More
Leaf lanceolate, 80–120 × 5–10 mm, hairy. Flower stem 60–400 mm long, hairy, 1-or 2-flowered. Flowers 35–50 mm across, smell like hot metal, cream to pale yellow variably stained with pink to red or wholly red; sepals and petals with relatively short, thin, dark red to blackish, glandular tips (no clubs), tips covered with single-celled, stalked glands. Dorsal sepal erect and incurved, 30–50 × 3–5 mm. Lateral sepals obliquely decurved, tips shallowly drooping, 45–60 × 5–7 mm, divergent. Petals similarly arranged, 30–45 × 3–4 mm. Labellum 14–16 × 9–11 mm, blood red, sometimes base pale; margins with numerous short, thick, dark red teeth to 1.5 mm long reducing in size, but extending nearly to apex; apex strongly recurved. Basal calli 4–6, c. 1.3 mm long, linear. Lamina calli golf-stick-like, to 1 mm long, dark red, in 4 or 6 rows extending onto base of midlobe. Column 9–11 × 5–6 mm, red, broadly winged; basal glands c. 1 mm long, ovoid, yellow.
Life form -
Growth form herb
Growth support free-standing
Foliage retention deciduous
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

Widespread; growing among tussocks and shrubs in scrubby woodland dominated by pink gum in rich, loamy soil.
More
Localised and rare, growing among grass and shrubs in heathy woodland in moisture-retentive soil.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 8-11

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 -

Images

Caladenia formosa unspecified picture

Distribution

Caladenia formosa world distribution map, present in Australia

Identifiers

LSID urn:lsid:ipni.org:names:985745-1
WFO ID wfo-0000727167
COL ID PBT9
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Calonemorchis haemantha Arachnorchis formosa Caladenia formosa Caladenia haemantha Calonema haemanthum