Caleana R.Br.

Genus

Angiosperms > Asparagales > Orchidaceae

Characteristics

Raceme of few fls or reduced to one; floral bracts small, membr., exceeded by slender pedicel. Ovary strongly curved away from raceme-axis, bending per. downwards and outwards and so bringing dorsal sepal lower than labellum; sepals and petals narrow and subequal. Labellum long-clawed, claw narrow and articulate to foot of column, strongly arched and bearing distally the peltate lamina, of which the end nearest the column corresponds to the appendage of Pterostylis. Column elongated, with a broad petaloid wing throughout its length, sts with a long column-foot; anther terminal, pollinia 2 per cell, pollen finely granular; stigma high under anther; rostellum minute. Plants terrestrial, glab.; tubers ovoid, new one produced at base of parent plant. Lf solitary, sheathing at base, linear to lanceolate; cauline bracts lacking. Genus of 4–5 Australian spp. of which one has been found in N.Z.
More
Deciduous, terrestrial orchids growing in small, loose to spreading, clonal colonies. Leaf single, basal, ground-hugging to upright, long and narrow or short and relatively broad, glabrous, often withered by flowering time. Racemes 1-to multi-flowered; peduncle extremely thin, wiry. Flowers non-resupinate, dark or dull-coloured, each resembling a bird or insect. Tepals free, narrow, inconspicuous, mostly reflexed out of the way. Labellum attached to column base or apex of column foot by an actively motile, elastic claw. Labellum lamina small, unlobed. Callus shaped like duck’s head and beak, smooth or bearing shiny black warts/calli, projected like an insectiform lure. Column appressed or at right angles to ovary, the curved, broad wings forming a deep, concave basin. Pollinia 4, mealy, yellow, no viscidium.
Life form perennial
Growth form herb
Growth support -
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

Found in freely draining soil in forested or shrubby habitats, heathland and sandplain vegetation.
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 -