small bird orchid

Chiloglottis grammata is a terrestrial, perennial, deciduous, herb with two leaves 50–80 mm (2–3 in) long and 15–25 mm (0.6–1 in) wide. A single greenish purple to purple flower 16–19 mm (0.6–0.7 in) long and 25–30 mm (0.98–1.2 in) wide is borne on a flowering stem 20–40 mm (0.8–2 in) high. The dorsal sepal is broadly egg-shaped to spatula-shaped with the narrower end towards the base, 15–19 mm (0.6–0.7 in) long and 8–11 mm (0.3–0.4 in) wide. The lateral sepals are linear to lance-shaped, 14–16 mm (0.55–0.63 in) long, about 2 mm (0.08 in) wide and taper towards their tips. There is a glandular tip 0.5–1.0 mm (0.02–0.04 in) long on the end of all three sepals. The petals are lance-shaped but curved, 13–16 mm (0.5–0.6 in) long, about 4 mm (0.2 in) wide and spread widely apart from each other. The labellum is egg-shaped to heart-shaped, 8–11 mm (0.3–0.4 in) long and 7–10 mm (0.3–0.4 in) wide with short, shiny greenish to reddish or black calli up to 1 mm (0.04 in) long and low ridges resembling writing covering most of its upper surface. Flowering occurs from October to February.

The small bird orchid is widespread and locally common in Tasmania, especially in moist to wet forest in mountainous areas, sometimes forming dense colonies.

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