|This extremely common epiphyte or lithophyte grows in rainforest and
rainforest verges and moist areas of open forests around Brisbane. Plants
commonly reach 3m across so this orchid is readily spotted and identified,
even in the tops of rainforest trees.
The pseudobulbs grow to 1m by 40mm and this orchid usually has copious
aerial roots growing vertically. There are 2 to 5 rigid terminal leaves to
28cm by 12cm. The flower stem grows to 65cm with up to 200 flowers.
Flowers are 5cm across and white to pale yellow with purple markings on
This distinctive orchid can be easily identified by its large robust
pseudobulbs, large rigid leaves and long racemes crowded with small white
to pale yellow flowers. The only other orchid which could be confused with
this orchid is its natural hybrid Dendrobium x gracillimum which is
a hybrid with Dendrobium
gracilicaule which can be distinguished by its much thinner
pseudobulbs and much smaller more rounded flowers.