A New Species of Agrostis (Poaceae, Pooideae, Poeae, Agrostidinae) from the Andean Páramos of Colombia and Ecuador

Patricia Candela Palacio; Ana María Molina; Zulma Esther Rúgolo de Agrasar; Andrea Susana Vega

doi:10.3417/2020544

Patricia Candela Palacio Universidad de Buenos Aires
Ana María Molina Jardín Botánico Arturo E. Ragonese (JBAER)
Zulma Esther Rúgolo de Agrasar Instituto de Botánica Darwinion
Andrea Susana Vega Universidad de Buenos Aires

DOI: https://doi.org/10.3417/2020544

Keywords: Agrostidinae, Agrostis, high páramos, Trichodium net

Abstract

Agrostis laegaardii A. M. Molina & Rúgolo (Poaceae), a new species restricted to the high páramos from Colombia and Ecuador, is described and illustrated. It is morphologically most similar to A. breviculmis Hitchc. but differs in spikelet length, pedicel apex, glume texture, relative distance between upper glume and floret, lemma and palea length, and the presence of an awn on the lemma. Micromorphology of the spikelet is discussed, and a Trichodium net is reported on the epidermis of the lemma. A distribution map and a key to the Colombian and Ecuadorean species of Agrostis L. with contracted inflorescences are provided.

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