bulbous bluegrass, bulbous blue grass
- Poa bulbosa is a perennial grass that can grow up to 7.8-31.5 in. (20-80 cm) tall. It has multiple common names but the most common are bird grass, June grass and Kentucky grass. P. bulbosa is native to Africa, temperate and tropical Asia and Europe.
- Sheath slightly compressed, not sharply keeled and split with overlapping margins. Leaf blade parallel sided, from 0.07-0.15 in. (2-4 mm) wide, keeled, and v-shaped. Foliage is a deep green color.
- Flowering occurs from May-June. Panicle is from 1.2-5.1 in. (3-13 cm) long, 1.18-3.15 in. (3-8 cm) wide and pyramid shaped. It is open with long branches. The branches at the base are in clusters of 3-5. There are 3-5 flowers per spikelet held on short, slender stalks.
- The fruit is a caryopsis (dry one-seeded fruit).
- Ecological Threat
- P. bulbosa overtakes open fields, yards and roadsides.
- Gucker, Corey L. 2007. Poa bulbosa, Fire Effects Information System, U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory
- University of California, Jepson Flora Project
- Flora of China, www.eFloras.org
- Pacific Northwest Extension
- USDA NRCS PLANTS
- USDA ARS GRIN
Images from Bugwood.org