Abstract
In connexion with the various investigations into the local disappearance of the grass wrack1, it has been noticed that the smaller narrow-leaved form of Zostera marina has, in some cases, replaced the larger type. Attention was thus focused on this Z. marina var. angustifolia, and it was suggested that it might have originated from a cross with the smaller species Z. nana. Dr. Butcher2 was unable to find any definite morphological or anatomical support for this view, but suggested that chromosome studies might clear up the situation.
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References
NATURE, 132, 277, Aug. 19 ; 483, Sept. 23 ; 752, Nov. 11 ; 1004, Dec. 2 ; 1933. 133, 912, June 16, 1934. 134, 143, July 28 ; 416, Sept. 15 ; 573, Oct. 13 ; 1934.
B.E.C., Report, 1933.
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BLACKBURN, K. Wasting Disease of Zostera marina. Nature 134, 738 (1934). https://doi.org/10.1038/134738a0
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DOI: https://doi.org/10.1038/134738a0
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