Calamovilfa, a Misplaced Genus of Gramineae

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Abstract
Calamovilfa, generally considered to be a member of the tribe Agrostideae and most closely allied to such genera asCalamagrostis andAmmophila, was investigated, using as criteria the embryo structure, lodicules, leaf epidermis and anatomy, and chromosome size and number. These studies revealed thatCalamovilfa belongs with the chloridoid-eragrostoid group, whereasAgrostis,Calamagrostis, andAmmophila, with which it was compared, are truly festucoid. All evidence indicates strongly thatCalamovilfa is most closely related toSporobolus. These two genera are not only very similar with respect to criteria mentioned above, but also on the basis of a number of gross morphological features, particularly those of the spikelet and the fruit.

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