common name: American Pillwort
scientific name: Pilularia americana
family: Marsileaceae (marsilea)
habitat: vernal pools, wet grassland
size: entire plant about 5 cm tall
common name: Little Quaking Grass
scientific name: Briza minor
family: Poaceae (grass)
habitat: grassland (moist)
size: plant up to 6 inches tall; floret 3 to 4 mm across
common name: Medusahead
scientific name: Taeniatherum caput-medusae
family: Poaceae (grass)
habitat: grassland, disturbed areas
size: plant 6 to 10 inches tall; floret 5 to 8 cm including awns