Aroideana 41-1-4

May 2018

Page 4

A Revision of Anthurium (Araceae) section Polyneurium for Carchi Province, Ecuador

Thomas B. Croat

Xavier Delannay

Robbie Wood

ABSTRACT

Thirty-four species of Anthurium section Polyneurium are described for Carchi Province in Ecuador. Species which have already been described include the following 17 species: A. alluriquinense Croat, A. bernalii Croat, A. cuspidatum Masters, A. hebetatilaminatum Croat & J. Rodriguez, A. lancea Sodiro, A. lineolatum Sodiro, A. longicaudatum Engl., A. maculosum Sodiro, A. membranaceum Sodiro, A. multinervium Engl., A. oreophilum Engl., A. panduriforme Schott, A. pulverulentum Sodiro var. pulverulentum, A. pulverulentum Sodiro var. adsimile Croat & J. Rodr., A. rivulare Sodiro, A. subcarinatum Engl. and A. umbraculum Sodiro. Seventeen species are new to science: A. aciculare Croat, A. aciforme Croat & Delannay, A. atroguttatum Croat, A. boylei Croat, A. carmenense Croat, A. cobbiae Croat & Delannay, A. dalmauii Croat, A. debile-emarginatum Croat, A. dichromum Croat, A. elisalevyae Croat, A. gelpii Croat, A. griseosessile Croat, A. melanochlorum Croat, A. mongonense Croat, A, narvaezii Croat, A. pseudonigrescens Croat and A. toisanense Croat. Two additional species are described but are based on sterile or poor-quality specimens. These are considered to be new species but are numbered and not named. In addition, one new species from neighboring Esmeraldas Province, A. misturatum Croat, is also described. A dichotomous key is provided for all species.

KEY WORDS

Araceae, Anthurium, sect. Polyneurium, Ecuador, Carchi, New species.