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Agronomic Characteristics of the Little-Known, Northern Grass, Arctagrostis latifolia var. arundinacea (Trin.) Griseb., and a Proposed Common Name, Tall Arcticgrass¹

Arctagrostis latifolia var. arundinacea (Trin.) Griseb. is a tall-growing, perennial grass confined to global regions above 50° N. Evaluations disclosed that this grass possesses several desirable attributes for possible agronomic use in the Subarctic, including excellent forage yield potential, a high level of winter hardiness, rapid spring growth, and succulent herbage containing markedly less dry-matter than other grasses compared. A disadvantage is its very small seed size (5,126,000/kg) which contributes to poor seedling vigor and necessitates shallow seed placement, with little associated competition for successful establishment. The common name "tall arcticgrass" is proposed. Several new locations are added to its known range in Alaska.

Key Words: native grass • taxonomy • geographical distribution • seed characteristics • depth of planting • seedling emergence • forage yield • crude protein • succulence

² Research Agronomist, Crops Research Division, ARS, USDA, and University of Alaska Agr. Exp. Sta., Palmer 99645.

Received for publication May 23, 1968.