Bulbous Oatgrass or Bulbous Tall Oatgrass:
Arrhenatherum elatius var. bulbosa
 |
Weed Description: Perennial, clump-forming grass that goes dormant during the summer and carries out it's life cycle during the winter months. Found throughout the southeastern United States primarily as a weed of winter small grains, landscapes, and turfgrass. |
| Leaves: Leaves are rolled in the bud, without auricles, and have a membranous ligule approximately 1/2 to 1 mm long. Leaf blades are approximately 10 mm wide and may reach 1 foot in length. Leaf blades may be sparsely hairy above or without hairs (glabrous), but lower surfaces are usually completely glabrous. |  |
 |
Stems: Round, without hairs or only sparsely hairy with split, overlapping margins. |
| Roots: Fibrous root system and bulbous fragments (pictured above) that are actually called corms. These fragments allow for the vegetative reproduction and spread of this species. |  |
 |
Flowers: Seedhead a narrow, shiny, erect or nodding, green or purplish panicle. |
| Identifying Characteristics: Perennial, clump-forming grass that carries out it's life cycle during the winter. Characteristic seedhead and bulbous roots (corms) also help to distinguish this weed from most other grass species. |  |