As classified in WFO snapshot
December 2024
Warning: older classification
variety
Poa caesia var. rigida
Vasey
This variety name was first published in Rep. U.S. Geogr. Surv., Wheeler 6(Botany): 290 (1878 publ. 1879)
This variety name has been reclassified since this snapshot. Its current preferred usage is a synonym .