DE MACROCARPAEAE GRISEBACH (EX GENTIANACEIS) SPECIEBUS NOVIS II: TYPIFICATION OFTHE RUIZ AND PAVON NAMES

Abstract

Ruiz and Pavon described four species of Lisianthus (Gentianaceae) that are now recognized in the genus : Lisianthus corymbosus, L. ovalis, L. revolutus, and L. viscosus. These species were described from specimens collected inthe province of Huanuco, Peru, and are here identified as relatively narrow endemics largely of that province. Their complicated axonomie or nomenclatural history has required a careful review that revealed interesting details relevant to their circumscriptions. Lectotypes are selected for Lisianthus corymbosus, L. revolutus, L. viscosus, rborescens, M. pachystyla, and M. sodiroana. Lisianthus corymbosus is recognized as an illegitimate name, and is therefore reduced tosynonymy under the next validly published name, pachystyla. Lisianthus ovalis does not have atype, and is therefore excluded from use. rborescens is identified here as a species of southern Ecuador, previously recognized as M. ovalis. The name Macrocarpaea magnifica Ewan, ined is a nomen herbariorum, here recognized as M. arborescens. The previously broadly circumscribed sodiroana is here recognized as restricted o the province of Pichincha, Ecuador. A new identification is reported where the anomalous specimen Dannouse s.n. (NY) previously identified as sp. by Ewan (1948) is identified as Tabernaemontana cr ssa (Apocynaceae).