Dendrobium gracilicaule F.Muell. APNI* Synonyms: Thelychiton gracilicaulis (F.Muell.) M.A.Clem. & D.L.Jones APNI*
Dendrobium macropus subsp. gracilicaule (F.Muell.) P.S.Green APNI*
Description: Epiphyte or occasionally an epilith, with stems erect to spreading, succulent, cylindrical, tapering towards the base, rooting only at the base, 20–60 cm long, 5–10 mm diam., with 3–6 leaves at apex; roots smooth, creeping.
Leaves spreading to erect, elliptic, 5–13 cm long, 20–40 mm wide, conduplicate, thin, smooth.
Inflorescences 5–12 cm long, 5–30-flowered. Sepals and lateral petals deep dull yellow with dense reddish blotching on the outside; dorsal sepal 7–10 mm long, 3–4 mm wide; labellum dull yellow, 7–8 mm long, 5–6 mm wide. Column c. 3 mm long; column foot c. 5 mm long.
Flowering: July–September
Distribution and occurrence: Grows on rainforest trees and also occasionally on rocks; north from the Hawkesbury R.
NSW subdivisions: NC, CC
Other Australian states: Qld
D. gracilicaule sporadically hybridizes with D. kingianum (producing D.x suffusum Cady) and D. speciosum (producing D. x gracillimum (Rupp) Leaney).
Text by P. H. Weston.
Taxon concept: Flora of NSW 4 (1993)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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