A new species of Agrostis (Poaceae, Pooideae, Poeae, Agrostidinae) from the Andean páramos of Colombia and Ecuador.

PALACIO, PATRICIA; MOLINA, ANA MARIA; RÚGOLO,ZULMA; VEGA, ANDREA SUSANA

NOVON

MISSOURI BOTANICAL GARDEN

Lugar: Saint Louis, Estados Unidos de América; Año: 2020

1055-3177

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 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.