Bromus aleutensis
Bromus aleutensis, commonly known as the Aleutian brome, is a perennial grass found in North America. "B. aleutensis" has a diploid number of 56. Taxonomy. It has been suggested that "Bromus aleutensis" may be a modified version of the similar "Bromus sitchensis" in which reproduction occurs at an earlier developmental state as a response to the climate of the Aleutian Islands. In addition, while "B. aleutensis" is mostly self-fertilizing and "B. sitchensis" is mostly outcrossing, anther lengths close to in some individuals of "B. aleutensis" suggests outcrossing. Description. "B aleutensis" is a perennial grass that is loosely  cespitose. The decumbent culms are tall and thick. The striate and pilose leaf sheaths have dense hairs. Auricles are rarely present. The glabrous ligules are long. The somewhat pilose leaf blades are long and wide. The open panicles are long. Lower branches of the inflorescence are long and number one to two per node, with two to three spikelets on their distal half. The elliptic to lanceolate spikelets are long, with three to six florets. The glumes are glabrous or pubescent, with the three- to five-veined lower glumes being and the seven- to nine-veined upper glumes being . The  lanceolate lemmas are and are laterally compressed and softly pubescent. The lemmas have nine to eleven veins, with the veins being especially conspicuous distally. The awns are and the anthers are . Habitat and distribution. "Bromus aleutensis" grows in sand, gravel, and disturbed soil in the Pacific coast, particularly from the Aleutian Islands (as its specific epithet indicates) to western Washington, though it has been found farther east in lake shores or road edges of Canada and Idaho. Ecology. "Bromus aleutensis" is infected by "Fusarium nivale" and "Hendersonia culmicola".