A Subphylum in the Kingdom Plantae.
The Subphylum Lycophytina is a member of the Phylum Tracheophyta. Here is the complete "parentage" of Lycophytina:
The Subphylum Lycophytina is further organized into finer groupings including:
- Family (23): Barinophytaceae · Caudatocarpaceae · Chaloneriaceae · Cyclostigmaceae · Drepanophycaceae · Eleutherophyllaceae · Flemingitaceae · Gosslingiaceae · Hsuaceae · Isoetaceae · Lepidocarpaceae · Lepidodendraceae · Lycopodiaceae · Miadesmiaceae · Pinakodendraceae · Pleuromeiaceae · Protolepidodendraceae · Sawdoniaceae · Selaginellaceae · Sigillariostrobaceae · Spenceritaceae · Sporangiostrobaceae · Zosterophyllaceae
Iso?tes, also written Isoetes and commonly known as the quillworts, is a genus of plants in the class Isoetopsida and order Isoetales. They are considered "fern allies". There are about 140-150 species, with a cosmopolitan distribution but often scarce to rare. Some botanists split the genus, separating two South American species into the genus Stylites. [more]
Selaginella is a genus of plants in the family Selaginellaceae, the spikemosses. Many workers still place the Selaginellales in the class Lycopodiopsida (often misconstructed as "Lycopsida"). This group of plants has for years been included in what, for convenience, was called "fern allies". S. moellendorffii is an important model organism, and its genome was sequenced by the United States Department of Energy's Joint Genome Institute. [more]
The Zosterophylls are a group of extinct plants. The taxon was first established by Banks in 1968 as the subdivision Zosterophyllophytina; they have since also been treated as the division Zosterophyllophyta and the class Zosterophyllopsida. They were among the first vascular plants in the fossil record, and had a world-wide distribution. They were probably stem-group lycophytes, forming a sister group to the ancestors of the living lycophytes. By the late Silurian (late Ludlovian, about 420 million years ago) a diverse assemblage of species existed, examples of which have been found fossilised in what is now Bathurst Island in Arctic Canada. [more]
At least 15 species and subspecies belong to the Family Zosterophyllaceae.
More info about the Family Zosterophyllaceae may be found here.
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