The Lycopodiales of the British Isles (Diphasiastrum, Huperzia, Isoetes, Lycopodium, Selaginella)


L. Watson and M. J. Dallwitz



Interactive key, including interactive information retrieval

The interactive key allows free choice of characters, is easy to use, and can lead to correct identifications in spite of occasional errors. It can display all the illustrations, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa.

Character list • Implicit attributes

Poems on cryptogams by Giles Watson

References • Citation • Contacts, conditions of use, contributions


These descriptions were generated from a DELTA database (Dallwitz 1980; Dallwitz, Paine, and Zurcher 1993). The bold parts are diagnostic descriptions, generated with the aid of Intkey (Dallwitz et al. 1993). They distinguish most taxa in at least one respect from the other taxa.

• Diphasiastrum alpinum (L.) Holub

• Diphasiastrum complanatum (L.) Holub.

• Huperzia selago (L.) Bernh. ex Schrank & Mart.

• Isoetes echinospora Durieu

• Isoetes histrix Bory

• Isoetes lacustris L.

• Lycopodiella inundata (L.) Holub

• Lycopodium annotinum L.

• Lycopodium clavatum L.

• Selaginella kraussiana (Kunze) A. Br.

• Selaginella selaginoides (L.) Link

• Extinct Lycopsida

Cite this publication as: ‘Watson, L., and Dallwitz, M.J. 2007 onwards. The Lycopodiales of the British Isles (Diphasiastrum, Huperzia, Isoetes, Lycopodium, Selaginella). Version: 1st September 2009.’.

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