<i>Cheirostylis tortilacinia</i> (Orchidaceae), a new record for Flora of Thailand

Cheirostylis tortilacinia, recently collected from Khao Yai National Park, is reported as a new record for Thailand. An artificial dichotomous key to the species of Cheirostylis now known to occur in Thailand is provided. A detailed taxonomic account, descriptions, line drawings, and photographs have been prepared from the Thai material for easy identification.</p