Dockrillia teretifolia— Rat's Tail Orchid—ORCHIDACEAE.

Dockrillia teretifolia

Link to Images on Flickr.

Habitat— Grows almost exclusively on Casuarina glauca but uncommonly also recorded from rainforest trees, chiefly in coastal districts.

Distribution— North from near Bega and inland to the upper Hunter Valley in New South Wales and into Queensland.

Description— Epiphyte or epilith with stems spreading to pendent, wiry, rooting only at base of sympodium, 5 to 15 cm long, 1 to 4 mm diam., with 1 leaf at apex; roots smooth, creeping.

Local occurrences

Barrington/Gloucester Tops, Black Head Flora Park, Boorganna Nature Reserve, Boorganna Nature Reserve, Booti Hill, Charlotte Head, Copeland, Darawank Nature Reserve and Wetland, Royal Botanic Gardens Sydney, Sea Acres National Park, Seven Mile Beach and Green Point, Tiona and Wallamba River Area

Leaves.— Pendent, linear, terete, 10 to 60 cm long, 3 to 8 mm diam, succulent, smooth.

Dockrillia teretifolia
Dockrillia teretifolia

Inflorescence.— 4 to 10 cm long, 4 to 15—flowered. Sepals and lateral petals white to pale yellow with a few short red or purple striations at the base; dorsal sepal 20 to 40 mm long, 2 to 3 mm wide; labellum white to pale yellow, dotted with deep purple, 18 to 30 mm long, 4 to 6 mm wide. Column 2 to 2.5 mm long; column foot 3 to 5 mm long.

Flowering.—July to October.