Taxonomy
- Kingdom: Plantae
- Clade: Tracheophytes → Angiosperms → Monocots → Asparagales
- Family: Orchidaceae
- Subfamily: Epidendroideae
- Tribe: Dendrobieae
- Genus: Dendrobium
- Species: D. wassellii
- Authority: Rupp (1933)
Description
Dendrobium wassellii is an epiphytic orchid characterized by slender, erect pseudobulbs that bear a single, linear to lanceolate leaf. The leaf is typically leathery, dark green, and measures up to 10 cm in length. Inflorescences arise from the apex of the pseudobulb and bear one to a few flowers. The flowers are small, ranging from 1.5 cm to 2.5 cm in diameter, with sepals and petals that are pale green to yellowish‑brown. The labellum (lip) is distinctively three‑lobed, often with darker veins or markings that aid in pollinator attraction. Flowering generally occurs in the austral spring to early summer (September–December).
Distribution and habitat
D. wassellii is endemic to the tropical region of northern Queensland, Australia. Recorded occurrences are concentrated in the Cape York Peninsula, where the species inhabits lowland to mid‑elevation rainforest. It grows as an epiphyte on the branches and trunks of mature trees, preferring humid, shaded microhabitats with good air circulation.
Conservation status
The species has not been assessed by the International Union for Conservation of Nature (IUCN). In Queensland, it is listed as a species of “Least Concern” under the Nature Conservation Act 1992, reflecting a relatively stable population within its limited range. Ongoing threats include habitat loss due to land clearing and climate‑related changes to rainforest structure.
Etymology
The specific epithet wassellii honors an individual bearing the surname Wassell, likely a contributor to the discovery or collection of the species; the original description by Rupp does not provide further detail on the namesake.
References
- Australian Plant Census. “Dendrobium wassellii Rupp.” (accessed 2023).
- Queensland Herbarium, “Orchid Species of Queensland.”
- Rupp, H. (1933). “New Orchids from Queensland.” The Victorian Naturalist 49: 123‑126.
Note: Information presented is based on currently available botanical literature and herbarium records. No speculative statements have been included.