Diuris flavescens (Diuris flavescens)
Description
Diuris flavescens is a tuberous, perennial herb with two linear leaves 80–170 mm (3–7 in) long, 3–4 mm (0.1–0.2 in) wide and folded lengthwise. Up to five pale yellow flowers with dark brown markings, 12 mm (0.5 in) wide are borne on a flowering stem 100–200 mm (4–8 in) tall. The dorsal sepal projects forward and is narrow egg-shaped, 6–9 mm (0.2–0.4 in) long and 4–5 mm (0.16–0.20 in) wide. It is yellow with greenish brown and reddish brown blotches. The lateral sepals are lance-shaped with the narrower end towards the base, green and brown, 12–18 mm (0.5–0.7 in) long, 1–2 mm (0.04–0.08 in) wide, turned downwards and parallel to, or crossed over each other. The petals are more or less erect, spread apart from each other with an elliptic to almost circular blade 6–9 mm (0.2–0.4 in) long and 4–5 mm (0.16–0.20 in) wide on a curved, green to brown stalk 4–6 mm (0.16–0.24 in) long. The labellum is 6–8 mm (0.2–0.3 in) long and has three lobes. The centre lobe is egg-shaped, 4.5–6.5 mm (0.2–0.3 in) wide with reddish brown markings and folded lengthwise. The side lobes are linear to narrow egg-shaped, 2–3 mm (0.08–0.1 in) long and about 1 mm (0.04 in) wide. There are two ridge-like calli about 5 mm (0.20 in) long near the base of the mid-line of the base of the labellum. Flowering occurs in September and October.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum:
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Class: Liliopsida
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Order: Asparagales
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Family: Orchidaceae
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Genus: Diuris
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