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Bulbophyllum medusae, commonly known as the Medusa orchid, is a species of epiphytic orchid with a creeping rhizome and a single leaf about 100 mm (3.9 in) long emerging from the top of each pseudobulb. The flowers are creamy yellow and arranged in clusters of about fifteen arranged in a circle at the tip of the flowering stem.
Diuris carinata is a tuberous, perennial herb with between four and six erect leaves 100–200 mm (4–8 in) long and 3–6 mm (0.1–0.2 in) wide. Between two and seven bright yellow flowers with reddish brown markings, about 30 mm (1 in) long and 20–30 mm (0.8–1 in) wide are borne on a flowering stem 500–800 mm (20–30 in) tall.
Bulbophyllum is a genus of mostly epiphytic and lithophytic orchids in the family Orchidaceae. It is the largest genus in the orchid family and one of the largest genera of flowering plants with more than 2,000 species, exceeded in number only by Astragalus.
Orchids in the genus Diuris are terrestrial, perennial, deciduous, sympodial herbs, usually with a few inconspicuous, fine roots and one or two tubers lacking a protective sheath. The stem is short, erect and unbranched with a leaf-like cataphyll at each node. There are between one and ten grass-like leaves at the base of the plant. [3] [4] [5] [6]
Arethusa bulbosa, commonly called dragon's mouth orchid, [4] is the only species in the orchid genus Arethusa. [3] The genus is named after a naiad of Greek mythology . [ 5 ] This monotypic genus is abbreviated Aret in trade journals.
Bucket orchids are an excellent example of coevolution and mutualism, as the orchids have evolved along with orchid bees (the tribe Euglossini of the family Apidae) and both depend on each other for reproduction. [2] One to three flowers are borne on a pendant stem that comes from the base of the pseudobulbs.
The subfamily Orchidoideae and the previously recognized subfamily Spiranthoideae are considered the closest allies in the natural group of the monandrous orchids because of several generally shared characters: a shared terrestrial habit; sectile (capable of being severed) or granular pollinia; erect anthers.
The dorsal sepal is spoon-shaped and bulbous, 13–16 mm (0.5–0.6 in) long, 10–12 mm (0.4–0.5 in) wide and smaller than the labellum. The lateral sepals are white, narrow linear, 5–10 mm (0.2–0.4 in) long and the petals are similar but only half as long. The labellum is about 15 mm (0.6 in) long, entirely purple and tube-shaped with ...