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Abstract
Abstract
We found several specimens of
Tropidia
connata
, a mycoheterotrophic orchid from Borneo, with features which have never been described
in any of the existing literature, namely subterranean tubers. We mainly focus on
the importance of the subterranean structures in comparison with the mycoheterotrophic
genus
Kalimantanorchis
from the tribe
Tropidieae
. This finding of the tuberous structure gives a new insight into the classification
of mycoheterotrohic species of
Tropidieae
and might affect the generic placement of
Kalimantanorchis
. We made a detailed study on the newly discovered specimens as well as the type,
and found more diagnostic characters of
T.
connata
than the previous description. Considering that the type specimen lacks the whole
tuberous character, we consequently designate an epitype with a drawing and emend
the description.