Preliminary account of the prothallium of Phylloglossum

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Abstract
Our knowledge of the development of the Isosporous Lycopodinæ is still so incomplete that no apology seems necessary for the present preliminary statement. A special interest attaches to Phylloglossum since it has been recognised as a permanently embryonic form of Lycopod. Phylloglossum is a genus with a single species— P. Drummondii — confined to Australia and New Zealand. The sporophyte generation is a small plant, growing from a tuber, which forms a tuft of a few cylindrical tapering leaves. In fertile plants the apex of the stem forms a peduncle, terminated by a cone or strobilus of small, scale-like, fertile leaves.

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