Diuris fragrantissima (Diuris fragrantissima)
Description
Diuris fragrantissima is a tuberous, perennial herb with two linear leaves 100–180 mm (4–7 in) long, 5–10 mm (0.2–0.4 in) wide and folded lengthwise. Up to twelve white flowers with mauve or pale purple markings, 30–35 mm (1.2–1.4 in) wide are borne on a flowering stem 100–200 mm (4–8 in) tall. The dorsal sepal is erect, egg-shaped, 12–15 mm (0.5–0.6 in) long and 8–12 mm (0.3–0.5 in) wide. The lateral sepals are narrow lance-shaped, 50–85 mm (2–3 in) long, about 2 mm (0.08 in) wide, turned downwards at an angle and almost parallel to each other. The petals are erect or turned backwards with an elliptic or egg-shaped blade 9–12 mm (0.4–0.5 in) long and 6–8 mm (0.2–0.3 in) wide on a green stalk 5–8 mm (0.2–0.3 in) long. The labellum is 9–12 mm (0.4–0.5 in) long and has three lobes. The centre lobe is fan-shaped or heart-shaped, 8–10 mm (0.3–0.4 in) long, 7–10 mm (0.3–0.4 in) wide with a raised ridge along its midline and wrinkled edges. The side lobes are erect, irregularly shaped, 3.5–5 mm (0.1–0.2 in) long and about 2 mm (0.08 in) wide. There are two ridge-like calli 4–5 mm (0.16–0.20 in) long near the base of the mid-line of the base of the labellum. Flowering occurs in October and November.
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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