Grasses are, well, grasses.
With the exception of Bamboo, they all look like grass, and their identifying characteristics would require a whole WebSite to themselves. The are over 200 identified species in the Bay Area, and at least 30 on Montara Mountain. And a good number of these are alien species. Nearby Urban Development, farming and ranching introduced many non-native grasses to the mountain. Some are benign, some are ferocious in taking over native grasslands.