Koellensteinia dasilvae sp. nov. (Zygopetalinae-Orchidaceae) from the Brazilian Amazon

Abstract

A new species of Koellensteinia from the Brazilian Amazon is described and illustrated. Koellensteinia dasilvae C. F. Hall & F. Barros (Orchidaceae) grows as epiphyte or saxicolous, close to streams in upland forests (terra firme) of the state of Amapá, northern Brazil. The new species resembles K. hyacinthoides, sharing morphological affinities with this species, but differs by growing inside forests, smaller plant size, smaller leaves and petiole, larger inflorescence with large peduncle and small rachis, labellum, when spread, broader between the lateral lobes than at the mid-lobe, margin of labellum minutely erose, and by short wings of the column. Nordic Journal of Botany