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ARS Home » Southeast Area » Miami, Florida » Subtropical Horticulture Research » Research » Publications at this Location » Publication #363886
Research Project: Subtropical and Tropical Ornamental Genetic Resource Management, Characterization, and Genetic Improvement

Location: Subtropical Horticulture Research

Title: Two new species of Peruvian Amaryllidaceae, an expanded concept of the genus Paramongaia, and taxonomic notes in Stenomesson

Author
item Meerow, Alan
item Nakamura, Kyoko

Submitted to: Phytotaxa
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 8/30/2019
Publication Date: 9/10/2019
Citation: Meerow, A.W., Nakamura, K. 2019. Two new species of Peruvian Amaryllidaceae, an expanded concept of the genus Paramongaia, and taxonomic notes in Stenomesson. Phytotaxa. 416(2):184-196.

Interpretive Summary: A new species of Paramongaia, P. multiflora, and of Rauhia, R. albescens, are described from Peru. We also present an updated tree of life analysis of aligned DNA sequences across the Andean Amaryllidaceae that groups both Paramongaia species with three species of Clinanthus. We propose an expanded concept of the genus Paramongaia for all five species and make the necessary taxonomic changes. Paramongaia is morphologically delimited from Clinanthus by the erect, uniformly waxy leaves, the fusion of the floral bracts on one side, and the insertion of the free filaments below the rim of the staminal cup. A key to the species of Paramongaia is provided. We additionally present some taxonomic notes on the genus Stenomesson.

Technical Abstract: A new species of Paramongaia, P. multiflora, and of Rauhia, R. albescens, are described from Peru. We also present an updated parsimony analysis of aligned ITS sequences across the tetraploid Andean clade of Amaryllidaceae subfam. Amaryllidoideae that places both Paramongaia species into a clade within the tribe Clinantheae with three erstwhile species of Clinanthus. We propose an expanded concept of the genus Paramongaia for all five species, provide a neotype for Paramongaia viridiflora, and make the necessary combinations in the genus in advance of a proposal for conservation of the name Paramongaia. Paramongaia is morphologically delimited from Clinanthus by the erect, uniformly glaucous leaves, the fusion of the spathe bracts on one side, and the insertion of the free filaments below the rim of the staminal corona. A key to the species of Paramongaia is provided. We additionally present some taxonomic notes for the genus Stenomesson.