Bulbophyllum caldericola
Introduction '''''Bulbophyllum caldericola''''' is a species of epiphytic or lithophytic orchid with inconspicuous, well-spaced pseudobulbs arranged along rhizomes which mostly hang from the surface on which they are growing. Each pseudobulb has a single, fleshy, channelled leaf and a single white flower with yellow tips. It grows on the trunks and larger branches of rainforest trees near the eastern border between New South Wales and Queensland.
Description ''Bulbophyllum caldericola'' is an epiphytic or lithophytic herb with its rhizomes mostly hanging with only the base attached to the surface on which they are growing. The pseudobulbs are  long,  wide and spaced  apart along the rhizomes. Each pseudobulb has a thick, fleshy, narrow oblong to lance-shaped leaf  long and  wide with a channelled upper surface. A single white flower with yellow tips is borne on a flowering stem  long. The sepals are narrow triangular in shape,  long, the lateral sepals joined at their sides for about half their length. The petals are much shorter than the sepals. The labellum is orange with a sharp bend near the middle. Flowering occurs from October to November.
Taxonomy and naming ''Bulbophyllum caldericola'' was first formally described in 1993 by Gerry Walsh who published the description in ''The Orchadian'' from a specimen collected in the Tweed Range. The specific epithet (''caldericola'') is derived from the Latin word ''caldaria'' and the suffix ''-cola'' meaning "dweller" or "inhabitant". The distribution of this species includes the caldera of the Tweed Volcano.
Distribution and habitat This orchid grows on trunks and larger branches of rainforest trees above  in the Tweed and Border Ranges.
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