Bulbophyllum nocturnum
From Wikipedia, the free encyclopedia
| Bulbophyllum nocturnum | |
|---|---|
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Orchidaceae |
| Subfamily: | Epidendroideae |
| Genus: | Bulbophyllum |
| Species: | B. nocturnum |
| Binomial name | |
| Bulbophyllum nocturnum J.J.Verm., de Vogel, Schuit. & A.Vogel | |
Bulbophyllum nocturnum is a species of epiphytic orchid that grows in New Britain. It was described in 2011, and is the first species of orchid known to consistently flower during the night, and close its flowers during the day.[2]
Bulbophyllum nocturnum grows as an epiphyte in the rainforests of New Britain at an altitude of 240–300 metres (800–1,000 ft).[2][3] The type specimens were collected in the Agengseng logging area, around the Upper Argulo River in West New Britain Province.[2] As of 2018[update], IUCN assessed the species as Vulnerable, threatened by logging and crop cultivation.[1]
Description and phenology
Bulbophyllum nocturnum has leaves up to 6.2 centimetres (2.4 in) long and 3.2 cm (1.3 in) wide. It produces flowering stalks only 5 mm (0.2 in) long, which bear an inflorescence comprising a single flower. The flowers are around 2 cm (0.8 in) long, with "yellowish green" sepals, with a red tint near the base; the lip is dark red, while the column is "yellow tinged red"; the petal appendages are greyish.[2]
Bulbophyllum nocturnum is believed to be the only species of orchid to routinely flower during the night.[2] Another species of orchid, Dendrobium amboinense, has been reported by some to open its flower at midnight and close them before noon, while other reports state that its flowers open at dawn.[4] It remains uncertain how B. nocturnum pollinates, as the flower is open for such a short space of time.[5] However, it is proposed that the flower may emulate a fungus, thus attracting small flies to act as pollinators.[2]