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Acianthinae_species
Corybas dentatus D.L.Jones
Nomenclature
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Section: CorysanthesSpecies: Corybas × miscellus
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Synonyms: 1
SUMMARY
Plant: terrestrial herb forming colonies
Leaf: 25-45 mm x 30- 42 mm, broadly ovate to cordate or orbicular, sometimes shallowly lobed, green above, whitish and pellucid beneath
Peduncle: ca 2 mm long bract ovate, acute, ca 3 mm x 3.5 mm
Ovary: 4-5 mm long, curved, Flower 18-25 mm long, dark purple, dominated by the dorsal sepal and labellum
Dorsal sepal: 20-22 mm x 9-11 mm obovate to spathulate-oblong in outline when flattened, pinkish-grey with dark purple spots and striations, cucullate, ending in line with the labellum margins
Lateral sepals: ca 5 mm x 0.8 mm, linear-lanceolate, acuminate, connate at the expanded base, upcurved or spreading obliquely, whitish, acuminate.
Lateral petals: ca 3 mmx 1 mm, lanceolate, falcate, acuminate, auriculate on the base of the column
Labellum: conspicuous, dark purplish throughout; labellum-tube ca 6 mm long, erect then curving gently through 180 degrees and expanding into the lamina; lamina 12-13 mm x 12-13 mm, broadly ovate with spreading or incurved, coarsely dentate margins, marginal teeth ca thirty; callus thickened, with groups of flattened calli in an irregular, tessellated arrangement near the apex of the labellum tube
Boss: flat, hardly mounded, dark purplish and not conspicuous
Auricles: short, directed downwards, with openings ca 1.5 mm across
Column: ca 4 mm long, erect, broadest just below the middle, prominently winged; stigma ca 1.5 mm across, oblong, concave; anther ca 1.5 mm long, obtuse, entire; pollinarium ca 1.3 mm x 1.3 mm; pollinia four, ca 1.1 mm long, oblong, yellow, mealy; viscidium ca 0.5 mm across, oblong
Capsule: not seen
Type: South Australia: Sandy Creek Conservation Park, 5 August 1990, R. Bates 23251 (holo AD, iso AD, CBG)
Distribution: Apparently endemic to the Mt Lofty Ranges of South Australia but the exact distribution uncertain due to confusion with C. incurvus
Ecology: It grows in open forest under low shrubs and bracken, in grey sandy loam.