Dendrobium rupicoloides
From Wikipedia, the free encyclopedia
| Northern rock orchid | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Epidendroideae |
| Genus: | Dendrobium |
| Species: | D. rupicoloides |
| Binomial name | |
| Dendrobium rupicoloides | |
| Synonyms[1] | |
Dendrobium rupicoloides, commonly known as the northern rock orchid,[2] is a species of lithophytic orchid that is endemic to tropical North Queensland. It has tapered green to reddish pseudobulbs, up to three thick, leathery leaves and up to fifty white flowers with purple markings on the labellum.
Dendrobium rupicoloides is a lithophytic herb with spreading roots and cylindrical green to reddish pseudobulbs 150–240 mm (6–9 in) long and 30–40 mm (1–2 in) wide. Each pseudobulb has up to three thick, leathery, dark green leaves originating from its top, the leaves 100–180 mm (4–7 in) long and 40–80 mm (2–3 in) wide. Between thirty and fifty white flowers 30–35 mm (1.2–1.4 in) long and 20–25 mm (0.79–0.98 in) wide are arranged on a flowering stem 300–550 mm (10–20 in) long. The dorsal sepal is oblong, 18–24 mm (0.71–0.94 in) long and 4–5 mm (0.16–0.20 in) wide. The lateral sepals are 16–20 mm (0.63–0.79 in) long, 4–5 mm (0.16–0.20 in) wide, strongly curved and spread apart from each other. The petals are linear to oblong, 18–23 mm (0.71–0.91 in) long, about 3 mm (0.1 in) wide and curved. The labellum is white or cream-coloured with purple markings, 9–11 mm (0.35–0.43 in) long and 9–10 mm (0.35–0.39 in) wide with three lobes. The sides lobes are crescent moon-shaped and the middle lobe is short with an orange ridge along its midline. Flowering occurs between October and December.[2][3]