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Orthoceras R.Br.

Genus

Angiosperms > Asparagales > Orchidaceae

Characteristics

Raceme of few to many fls; floral bracts heavy in texture and often exceeding ovary at fl. Per. glab.; dorsal sepal uppermost, broad and arched over column; lateral sepals much longer, very narrow-linear, channelled; petals short, narrow and ± hidden under dorsal sepal. Labellum almost as large as dorsal sepal, sessile, 3-lobed; callus thick, median. Column short; wings in form of 2 free lateral processes; anther dorsal, taller than stigma, pollinia ill-defined, pollen granular; stigma disc-shaped; rostellum prominent, acute. Plants terrestrial, glab.; tuber long-ovoid, us. produced close to the previous one. Lvs several, sheathing at base, narrow, followed by foliaceous cauline bracts. Monotypic genus, confined to Australia, New Caledonia and N.Z.
More
Terrestrial orchids growing as scattered individuals with elongated, fleshy tubers. Flowering plants have a basal tuft of thin, spirally arranged, grass-like leaves and a tall, sturdy, multi-flowered inflorescence. Flowers small, green to dark-coloured with a strongly hooded dorsal sepal; lateral sepals long, erect to spreading, horn-like; petals tiny, hidden within dorsal sepal; labellum decurved, strongly 3-lobed with a prominent yellow central patch towards the base.
Life form perennial
Growth form herb
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Sexuality hermaphrodite
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Environment

Moist to dry sites in forests and heath.
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Hardiness (USDA) 8-11

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Cultivation

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Images

Orthoceras unspecified picture

Distribution

Orthoceras world distribution map, present in Australia and New Zealand

Identifiers

LSID urn:lsid:ipni.org:names:30198-1
WFO ID wfo-4000027258
COL ID 8VZYL
BDTFX ID -
INPN ID 672710
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Orthoceras

Lower taxons

Orthoceras novae-zeelandiae Orthoceras strictum
WorldFloraDB 2024