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Phylum Lycophyta (or Lycopodophyta) -- club mosses or ground pines or lycopods Lycophyta comprises only five or six extant genera (many more extinct taxa) of which three occur in Texas. Lycopodium is common in east Texas, Isoetes occurs on granite outcrops in the hill country; Selaginella occurs throughout the state, although some species are easily mistaken for mosses. Lycopodium is homosporous--all spores are roughly equal in size. Selaginella and Isoetes are heterosporous--spores are of two distinct sizes, microspores and megaspores. Genus Lycopodium

Lycopodium growing wild (Hawaii)

	Lycopodium alopecuroides (below) is common in east Texas.
Lycopodium lucidulum	Lycopodium alopecuroides

Lycopodium annotinum	Lycopodium flabelliforme

Lycopodium lucidulum lacks strobili	Lycopodium alopercuroides strobili are not especially distinct from the rest of the plant.
Lycopodium annotinum strobilus	Lycopodium flabelliforme strobili

Lycopodium lucidulum, sporangia, 10x

Lycopodium lucidulum, dissected sporangia, 20x

Lycopodium sp. l.s. 20x

Lycopodium sp. l.s. 20x

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