| Type: | Alliance |
| Parent classification: | Intermountain Semi-Desert Grassland |
| Scientific Name: | Pseudoroegneria spicata - Opuntia polyacantha Dry Canyon Slope Grassland Alliance |
| Location: | United States (Washington, Idaho, Oregon) |
| Description: | These dry grasslands occur in the canyons and valleys of the northern Great Basin and in the Columbia Basin and are characterized by a sparse to moderately dense graminoid layer of Pseudoroegneria spicata codominated by Aristida purpurea var. longiseta and/or Poa secunda. Pseudoroegneria spicata is sometimes absent or has low cover, and Sporobolus cryptandrus and Opuntia polyacantha may be especially abundant on disturbed or harsh windswept sites. |
| Website: | View website |