Bulbophyllum johnsonii

Bulbophyllum johnsonii, commonly known as the yellow snake orchid,[2] is a species of epiphytic or lithophytic orchid that has a thin, creeping rhizome with flattened pseudobulbs, each with a single tough, dark green leaf and a single bright yellow to orange flower on a thread-like stalk. It grows on trees, shrubs and rocks in and near rainforest in tropical North Queensland.

Yellow snake orchid
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Epidendroideae
Tribe: Dendrobieae
Genus: Bulbophyllum
Species:
B. johnsonii
Binomial name
Bulbophyllum johnsonii
T.E.Hunt[1]
Synonyms[1]
  • Serpenticaulis johnsonii (T.E.Hunt) M.A.Clem. & D.L.Jones
  • Bulbophyllum kirkwoodiae T.E.Hunt
  • Bulbophyllum whitei T.E.Hunt & Rupp
  • Serpenticaulis kirkwoodiae (T.E.Hunt) M.A.Clem. & D.L.Jones
  • Serpenticaulis whitei (T.E.Hunt & Rupp) M.A.Clem. & D.L.Jones

Description

Bulbophyllum johnsonii is an epiphytic or lithophytic herb that has thin, creeping rhizomes pressed against the surface on which it grows and flattened dark green, reddish or purple pseudobulbs 14–18 mm (0.55–0.71 in) long and 10–15 mm (0.39–0.59 in) wide. Each pseudobulb has a tough, dark green, egg-shaped leaf 10–40 mm (0.4–2 in) long and 7–15 mm (0.28–0.59 in) wide. A single resupinate, red, brown, green or yellowish flower 7–10 mm (0.28–0.39 in) long and 15–20 mm (0.59–0.79 in) wide is borne on a thread-like flowering stem 20–30 mm (0.79–1.2 in) long. The dorsal sepal is 6–8 mm (0.24–0.31 in) long, 3–4 mm (0.12–0.16 in) wide and forms a hood over the column. The lateral sepals are 5–6 mm (0.20–0.24 in) long and 2–3 mm (0.079–0.12 in) wide and spread widely apart from each other. The petals are 1–2 mm (0.039–0.079 in) long, about 1 mm (0.04 in) wide with a dark blotch on the tip. The labellum is 6–8 mm (0.2–0.3 in) long, about 1.5 mm (0.06 in) wide with a red base and a yellow tip. Flowering occurs sporadically throughout the year.[2][3]

Taxonomy and naming

Bulbophyllum johnsonii was first formally described in 1950 by Trevor Edgar Hunt who published the description in Proceedings of the Royal Society of Queensland from a specimen collected at Hambledon by "A. E. Johnson".[4][5] The specific epithet (johnsonii) honours the collector of the type specimen.

Distribution and habitat

The yellow snake orchid usually grows on trees, shrubs and rocks in rainforest and open forest, at higher altitudes between the Cedar Bay National Park and the Paluma Range National Park.[2][3]

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References
  1. "Bulbophyllum johnsonii". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  2. Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 432. ISBN 1877069124.
  3. "Serpenticaulis johnsonii". Trin keys: Australian Tropical Rainforest Orchids. Retrieved 13 December 2018.
  4. "Bulbophyllum johnsonii". APNI. Retrieved 12 December 2018.
  5. Hunt, Trevor Edgar (1950). "A review of the genus Bulbophyllum (Orchidaceae) in Australia". Proceedings of the Royal Society of Queensland. 60: 60. Retrieved 13 December 2018.
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