Australian Tropical Rainforest Orchids
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Diteilis collinsii

Pale Sprite Orchid

Diteilis collinsii (B.Gray) M.A.Clem. & D.L.Jones, Orchadian 14(8): Suppl. xiii (2004).

Liparis collinsii B.Gray, Austrobaileya 3(4): 581-583, f.1 (1992). Type: cult. Atherton ex Queensland, Timber Reserve 14, Parish of Kesteven, 1346S, 14321E, 740m, 13 Sep.1990, B. Gray 5269 (holo QRS; iso BRI, CANB, NSW).

Distribution

Occurs in far north-eastern Queensland on the McIlwraith Range.

Altitude: 650-900 m.

Description

Terrestrial herb forming small clumps. Stems 2, erect, ovoid to conical, tapered, 6-10 cm x 1.5-3 cm, fleshy. Leaves 3-6, scattered along upper part of stem, erect to prostrate, sessile, petioles 5-7 cm long, bases sheathing stem; lamina lanceolate, 10-13 cm x 4-5 cm, dark green with raised purplish veins on underside, thin-textured, pleated, margins undulate, apex acuminate. Inflorescence a terminal raceme, erect, 150-350 mm long; peduncle 4-sided, slightly winged; pedicels 10-16 mm long, including ovary. Flowers 6-20, resupinate, erect to porrect, star-shaped, 18-23 mm x 20-25 mm, pale purplish to purplish green. Sepals and petals narrow, widely spreading. Dorsal sepal recurved, linear to narrowly ovate, 12-14 mm x 3-3.5 mm, margins revolute. Lateral sepals recurved, elliptic, falcate, 9-11 mm x 3-3.5 mm, margins revolute. Petals filiform, 9-11 mm x 1.5 mm, strongly revolute, rolled into narrow tube. Labellum unlobed, wider than sepals and petals, recurved, obovate, 10-13 mm x 8-10 mm, base channelled with 2 short ridges, with irregular margins, apex broadly emarginate. Column incurved, 7 mm long. Column foot absent. Capsules erect, dehiscent.

Ecology

Occurs in open areas of rainforests forming loose colonies among boulders, growing in gravelly loam. Plants are dormant and leafless during the dry season, growing rapidly with the first substantial rains of the wet season.

Highly localised.

Flowering period: November-January.

Name Changes

Until recently known as Liparis collinsii.

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