156,011 species and infraspecific names are in the database, 21,990 images, 60,295 bibliographic items, 442,406 distributional records.

Bibliographic Detail

Papenfuss, G.F., 1960

Reference:
Papenfuss, G.F. (1960). On the genera of the Ulvales and the status of the order. Journal of the Linnean Society of London, Botany 56: 303-318, 21 figs, 6 pls.

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