Publication Date:
2024-01-12
Description:
A new and florally unusual species of the genus Dichaea is described and illustrated from Costa Rica,
\nwhere it is apparently endemic, and its relationships are discussed. Dichaea auriculata is compared with the group
\nof species close to D. graminoides, from which it can be distinguished by the lip with a long isthmus, provided with
\ntwo rounded auricles at the base, instead of the sessile lip typical of the group. It is also compared with another
\nCosta Rican endemic in the same complex, D. gracillima, from which it can be distinguished by the autogamous,
\nmostly cleistogamous, flowers, the 3-lobed lip with rounded basal lobes, the high keel along the lip isthmus, and
\nthe bifid ligule of the column. Notes on the habitat and the ecology of the new species are provided.
Keywords:
Plant Science
;
Ecology
;
Evolution
;
Behavior and Systematics
;
autogamy
;
Dichaeopsis
;
Flora of Costa Rica
;
new species
;
plant diversity
;
section Pseudodichaea
Repository Name:
National Museum of Natural History, Netherlands
Type:
info:eu-repo/semantics/article
Format:
application/pdf
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