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.
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. tarberi (producing D. X gracillimum (Rupp) Leaney).
Text by P. H. Weston
Taxon concept: Flora of NSW 4 (1993)
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