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Acianthinae_species
Corybas globulus
Nomenclature
SUMMARY
Plant: Glabrous terrestrial herb growing in loose clonal colonies.
Leaf: 15-30 mm long, 10-30 mm wide, cordate, bright green above with 3 lighter coloured veins, margins reddish, underside reddish, veins raised, apex mucronulate.
Peduncle: 5-8 mm long, fleshy, pinkish.
Floral Bract: Closely sheathing, 4-6 mm long, 2.5-3.5 mm wide, ovate-elliptic, acuminate.
Ovary: 7-8 mm long, c. 1.8 mm wide, linear, curved.
Flower: 10-11 mm long, somewhat globose, nodding, dark reddish purple.
Dorsal Sepal: 10-12 mm long, dark reddish purple; claw 5-6 mm long, c. 2 mm wide, curved, canaliculate, expanded suddenly into the lamina; lamina 10-12 mm wide when flattened, transversely ovate-elliptic, deeply concave, dorsal surface scabrid to minutely hispid, apex more or less truncate.
Lateral Sepals: Closely embracing the labellum, c. 8 mm long, c. 0.5 mm wide, linear, white, acuminate.
Petals: Embracing the labellum base, c. 5 mm long, 0.4 mm wide, linear, curved to sigmoid, acuminate.
Labellum: About as long as the dorsal sepal, tubular with connate dorsal margins, 10-11 mm long, c. 12-14 mm wide when flattened, deeply concave/saccate, base reddish, apex purple-black with some lighter areas, 3 lobed; lateral lobes c. 5 mm across, curved; auricles c. 2.5 mm long, tubular, nearly horizontal, white, opening c. 1 mm across; midlobe c. 5 mm across, ending in a broad beak c. 1.5 mm long that subtends the orifice, the surface and margins of this beak adorned with numerous, tiny, scattered, acicular to hispid, dark red trichomes. Labellum callus consisting of a median longitudinal ridge densely adorned with rows of crowded, pink to dark red, retrorse, acicular moniliform calli c. 1 mm long, forming a mass c. 2 mm across, the longest calli towards the middle and base, decrescent to the apex; 4 short lateral rows of calli present on the labellum beak.
Column: c. 4.5 mm long, c. 2 mm wide at the base; basal auricles c. 2 mm long, fleshy, curved. Anther cap c. 4mm long, erostrate, bright red to burgundy, papillate/colluviate. Stigma transversely elliptic, c. 1 mm across, sunken. Pollinarium c. 1.2 mm long, c. 0.9 mm wide; pollinia yellow, mealy; viscidium 0.6 mm long.
Capsule: Not seen.
Type: New South Wales: Northern Tablelands: Washpool National Park, 70 km ENE of Glen Innes, 29°29’S, 152°19’E, L.M. Copeland 3933 @ D.M. Raets, 8 May 2005 (holo CANB 665106; iso NE, NSW). (Specific locality details withheld for conservation purposes).
Etymology: The Latin globulus, globule, little ball, in reference to the flower shape.