A revision of Deschampsia, Avenella and Vahlodea (Poaceae: Aveneae: Aveninae) in South America

CHIAPELLA, J,; ZULOAGA, F. O.

ANNALS OF THE MISSOURI BOTANICAL GARDEN

MISSOURI BOTANICAL GARDEN

Lugar: Saint Louis, Estados Unidos de América; Año: 2010 vol. 97 p. 141 - 162

0026-6493

ABSTRACTA revision of the species of Deschampsia P. Beauv., Avenella (Bluff & Fingerh.) Drejer, and Vahlodea Fr. (Poaceae, Poeae, Airinae) present in South America is given. Fifteen species of Deschampsia and two monospecific genera segregated from Deschampsia P. Beauv., Avenella (Bluff & Fingerh.) Drejer, and Vahlodea Fr. (Poaceae, Poeae, Airinae) present in South America is given. Fifteen species of Deschampsia and two monospecific genera segregated fromDeschampsia and two monospecific genera segregated from Deschampsia—Avenella and Vahlodea—are found in the Andes of Argentina and Chile south of 30uS, typically in humid or damp sites and wetlands. Isolated populations of the cosmopolitan D. cespitosa (L.) P. Beauv. are also found in Bolivia and highlands of southern Brazil. Keys to differentiate among the species of Deschampsia and the allied genera Avenella and highlands of southern Brazil. Keys to differentiate among the species of Deschampsia and the allied genera Avenella and damp sites and wetlands. Isolated populations of the cosmopolitan D. cespitosa (L.) P. Beauv. are also found in Bolivia and highlands of southern Brazil. Keys to differentiate among the species of Deschampsia and the allied genera Avenella and highlands of southern Brazil. Keys to differentiate among the species of Deschampsia and the allied genera Avenella and —Avenella and Vahlodea—are found in the Andes of Argentina and Chile south of 30uS, typically in humid or damp sites and wetlands. Isolated populations of the cosmopolitan D. cespitosa (L.) P. Beauv. are also found in Bolivia and highlands of southern Brazil. Keys to differentiate among the species of Deschampsia and the allied genera Avenella and highlands of southern Brazil. Keys to differentiate among the species of Deschampsia and the allied genera Avenella and D. cespitosa (L.) P. Beauv. are also found in Bolivia and highlands of southern Brazil. Keys to differentiate among the species of Deschampsia and the allied genera Avenella andDeschampsia and the allied genera Avenella and Vahlodea are provided. A lectotype is designated for D. berteroana (Kunth) Trin.are provided. A lectotype is designated for D. berteroana (Kunth) Trin. Key words: Airinae, Aveneae, Avenella, Deschampsia, Poaceae, Poeae, Vahlodea.