General: Grass Family (Poaceae). Koleagrass is an introduced, tall, robust, rapid-developing bunchgrass with short rhizomes. This species includes both Phalaris tuberosa var. stenoptera (previously known as Harding grass) and Phalaris tuberosa var. hirtiglumis (previously known as koleagrass). P.t. var. hirtiglumis was recognized to have bigger seeds, more vigorous seedlings, yellow-green leaves, and hairy glumes. Both of these varieties have been submerged taxonomically into Phalaris aquatica.
Distribution: Koleagrass was introduced from Morocco. Used for pasture and erosion control in California and sparingly in other parts of the southwestern U.S. Consult the PLANTS Web site for its U.S. distribution.
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