abstract. A new, attractive and morphologically unique species of Spathoglottis is described, illustrated and compared with the most similar species. The new species is currently only known from two localities in southeastern Bhutan and differs distinctly from its closest relative, Spathoglottis hardingiana, by the glabrous pedicels, forward-curved acuminate apices of the petals, a yellow hypochile of the lip, two pairs of unequal callus "horns" and swellings, and a spirally coiled epichile of the lip, versus a densely pubescent inflorescence and pedicels, a pale purple hypochile, a single pair of erect and clavate, or"bubble-shaped", callus swellings, and a projecting and narrowly triangular epichile of the lip for S. hardingiana.

The Long Pine Key area of Everglades National Park (Florida) is critical habitat for a large number of rare plant species including two candidates for federal listing and several dozen listed as endangered or threatened by the state of Florida. In addition, there are nineteen species present in the Long Pine Key area that are critically imperiled in South Florida and six species historically documented from the area that may be extinct in the continental United States (Gann et al., 2002).

abStraCt. Three new species of Masdevallia, subgenus Masdevallia are described, illustrated with line drawings and color photographs, one dwarf species in section Coriaceae and two attractive and rather large species in section Masdevallia. The former section is also treated as the genus Byrsella by Luer (2006). All three new species are distinguished by unique combinations of features that separate them from all other species in the large genus Masdevallia.