Corybas obscurus
Corybas obscurus is a species of terrestrial orchid endemic to New Zealand. It has a solitary heart-shaped leaf and a deep crimson or nearly black flower and is part of the Corybas trilobus aggregate. Description Corybas obscurus is a terrestrial, perennial herb with a single reniform (kidney-shaped) or cordiform (heart-shaped) leaf born on a petiole that is 5.1–40.8 mm long. The leaf itself is 5.8–18.2 × 9.6–26.7 mm and has a mucronate apex. The single flower is held on a peduncle with a small floral bract. The dorsal sepal arches over the labellum and is broad at the apex; it ranges from dark crimson to nearly black. The lateral sepals range from crimson to dark red and are filiform (thread-like), between 11.7 and 20.6 mm long. The petals resemble the lateral sepals but are longer, between 27.3 and 57.2 mm long. The labellum, around 10 mm wide, is auriculate at the base and is strongly curved downwards. It folds inwards and forms a central groove; its margins are very slightly cupped. The inner surface of the labellum is covered with trichomes ending with a compact head (glandular). It is curved at its base, forming a cylindrical opening with a with