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Vascular Plants - a quick review - page 5 / 12

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Phylum Lycopodiophyta

Selaginellaceae - spike mosses 1 genus and about 750 species

Mainly tropical family with some species extending into arctic regions of both hemispheres

Leaves spirally arranged and often 4-ranked on the secondary and ultimate branches.

Spores borne in or near the axils of well-differentiated sprophylls, usually on 4 sided stroboli.

Phylum Lycopodiophyta

Huperzia lucidula Shiny club moss

Phylum Lycopodiophyta

Selaginellaceae - spike mosses 1 genus and about 750 species

Mainly tropical family with some species extending into arctic regions of both hemispheres

Leaves spirally arranged and often 4-ranked on the secondary and ultimate branches.

Spores borne in or near the axils of well-differentiated sprophylls, usually on 4 sided stroboli.

Heterosporous: differentspores

Unlike Lycopodiaceae, Selaginellaceae are heterosporous with different types of spores: microspores and megaspore (not related to size) the micro give rise to male gametophytes and the mega give rise to the female gametophytes.

Polytrichum forest mosses

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