Hexisea is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of orchids (family

Family (biology)

In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...

 Orchidaceae). The genera Costaricaea Schltr. and Euothonaea Rchb.f.

Heinrich Gustav Reichenbach

Heinrich Gustav Reichenbach was an ornithologist, botanist and the foremost German orchidologist of the 19th century...

are synonyms of Hexisea. This genus is abbreviated Hxsa in trade journals.

Synonymy

At the urging of Dressler, Hexisea has been reduced to synonoymy under Scaphyglottis

Scaphyglottis

Scaphyglottis is a genus of orchids native to Central America, northern South America and parts of the Caribbean. The current concept of this genus is the result of combining several genera which have been described at various times...

, over which Hexisea has priority. The Hexisea page is conserved here because Dressler's proposal stated, in part: "...those who so wish may retain Hexisea in any circumscription that excludes S.  graminifolia (the type of Scaphyglottis; see Dressler in Taxon 9:214. 1960)..."