Adenochilus Hook.F.

Genus

Angiosperms > Asparagales > Orchidaceae

Characteristics

Deciduous, terrestrial orchids with long, creeping, fleshy rhizomes (no tubers or roots) that are enlarged and with root hairs at each growing point. Leaf solitary, held above ground level, either carried separately on long petiole or attached to flower stem; blade membranaceous, flat. Raceme 1-or 2-flowered, fleshy, brittle. Flowers resupinate, opening widely. Sepals and petals fleshy with red glandular hairs on outside. Dorsal sepal wider than lateral sepals, hooding column and labellum. Lateral sepals fused at base, projected forwards as a pair. Petals free, narrower than sepals, erect beside column. Labellum stiffly hinged by short claw to column base. Labellum lamina 3-lobed, strongly curved, membranous, with sharp medial fold, surface papillate; lateral lobes large, entire; mid-lobe narrow, recurved. Calli in dense central band; basal calli subsessile, main calli stalked, club-like. Column wings extend above anther as hood. Anther with 8 bilobed pollinia; no viscidium.
More
Fl. us. solitary; floral bracts us. 2–3, small. Per. glandular-pubescent; dorsal sepal uppermost, concave, adnate to column near base and ± arched over it; lateral sepals and petals longer, narrower, subsimilar. Labellum shortly clawed, half-erect; disc broad-oblong, mid-lobe narrow and recurved; calli stipitate and rounded, in longitudinal rows extending inwards from broader part of mid-lobe. Column elongate, ± curved, winged throughout, the wings produced upwards in ± toothed lobes above the anther; anther terminal, incurved, pollinia mealy; stigma prominent, inclined downwards, rostellum 2-lobed. Plants terrestrial, slender, glab.; tubers absent; rhizome fleshy, branched. Lf solitary, petiolate from rhizome, sessile on flowering stem; lamina short and broad, length rarely 2 × width. Includes, besides the type sp. A. gracilis, which is endemic to N.Z., 1 Australian sp.
Life form perennial
Growth form herb
Growth support -
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
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Root system creeping-root rhizome
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Nitrogen fixer -
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Environment

High rainfall forests.
Light -
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Hardiness (USDA) 8-11

Usage

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

Cultivation

Mode -
Germination duration (days) -
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Images

Adenochilus unspecified picture

Distribution

Adenochilus world distribution map, present in Australia and New Zealand

Identifiers

LSID urn:lsid:ipni.org:names:28610-1
WFO ID wfo-4000000614
COL ID 8VT9M
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Adenochilus

Lower taxons

Adenochilus nortonii Adenochilus gracilis