- Dactylis glomerata is a cool-season perennial that grows 1.4-4 ft. (0.43-1.2 m) tall. Under dry conditions it usually develops in clumps.
- Leaves have a bluish hue and grow up to 0.5 in. (1.3 cm) wide, folded when immature but later flat, with prominent white midrib on the under side.
- The flowers are yellow and occur in a panicle with spikelets in a compact cluster on one side of the rachilla. Flowers bloom from May to August.
- Panicle, 2-8 in. (5.1-20.3 cm) long, with spikelets grouped together in dense, one-sided clusters at the end of panicle branches; spikelets contain 2 to 5 florets; lemmas pointed to short-awned.
- Ecological Threat
- Dactylis glomerata is native to Europe and was first introduced to the United States in the late 1700s. It prefers areas that are well-drained with moderately fertile to rich soils.
Sullivan, Janet. 1992. Dactylis glomerata. Fire Effects Information System, U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory 
James A. Duke. 1983. Handbook of Energy Crops, Purdue University 
University of California, Jepson Flora Project 
Flora of China, www.eFloras.org 
California Invasive Plant Council 
USDA NRCS PLANTS 
Images from Bugwood.org