Caladenia arenaria Fitzg.

Sand-hill spider orchid (en)

Species

Angiosperms > Asparagales > Orchidaceae > Caladenia

Characteristics

Leaf 80–150 × 8–13 mm. Flower stem 150–300 mm tall, 1-flowered. Flowers 60–80 mm across, cream to pale yellow, sometimes suffused with red markings; sepals and petals with thin red tips (no clubs). Dorsal sepal erect, 45–70 × 2–3 mm. Lateral sepals spreading with drooping tips, 40–60 × 4–5 mm, widely divergent. Petals spreading, 35–45 × 2–3 mm. Labellum 15–18 × 10–12 mm, yellowish, sometimes with red suffusions; margins with numerous red teeth to 1.5 mm long; tip recurved. Basal calli 6–8, c. 1.5 mm long, erect. Lamina calli to 1.2 mm long, yellowish or reddish, in 4 or 6 rows almost to labellum apex. Column 9–11 × 5–6 mm, transparent with red markings; 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) 0.15 - 0.3
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Once widely distributed in Riverina, but now highly localised and rare in a few relict patches of vegetation. Found growing on flats and gentle slopes in Callitris woodland and box-ironbark forests in sandy loam; also on slopes of consolidated dunes in freely draining sands.
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 -

Images

Caladenia arenaria unspecified picture

Distribution

Caladenia arenaria world distribution map, present in Australia

Identifiers

LSID urn:lsid:ipni.org:names:620614-1
WFO ID wfo-0000719276
COL ID PBPM
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Arachnorchis arenaria Calonemorchis arenaria Calonema arenarium Caladenia arenaria Caladenia patersonii var. arenaria