|Year of Publication:
|Carlsen, M., Croat T. B.
|Novon; a Journal for Botanical Nomenclature. St. Louis, MO
|Anthurium, Araceae, Semaeophyllium, trilobed leaves
Seven new species of Anthurium with trilobed leaves belonging to section Semaeophyllium (Araceae) have been discovered and are here published for the first time. They include: Anthurium ancuashii from Peru, A. chimborazense from southern Ecuador, A . ternifolium and A. pinkleyi from northeastern Ecuador A. constrictum and A. moronense from southeastern Ecuador and Peru, and A. rotundatum ranging from southern Costa Rica and Panama to northern Colombia
Anthurium Schott is an exclusively Neotropical genus and one of the most diverse within the family Araceae, with approximately 1000 species (Croat, 1994). It is recognized by being typically terrestrial or epiphytic, having leaf blades with reticulate tertiary venation and collective veins, and by its bisexual flowers with four tepals that are arranged in a uniform spadix subtended by an open, often persistent spathe. Leaf morphology is one of the most variable characteristics within Anthurium and that has led to the description of several sections( Croat & Sheffer 71983). One of the most easily recognizable of these groups is section Semaeophyllium, characterized by having trilobed leaves with pedate venation and lobes that are united at the base. It was first recognized by H. C. Schott in his Prodromis Systematis(Schott 71860), and formal revision of section Semaeophyllium is currently being carried out by the authors( Carlsen & Croat, in prep.). Section Semaeophyllium ranges from southwestern Nicaragua in to Costa Rica and Panama to Colombia, Venezuela, and Ecuador into northern Peru.