?Psilotum
Closeup of Psilotum nudum
Scientific classification
Kingdom: Plantae Division: Psilotophyta Class: Psilotopsida Order: Psilotales Family: Psilotaceae Genus: Psilotum
Species
Psilotum nudum (L.) Beauvois Psilotum complanatum Sw.

Psilotum (whisk ferns) is a genus of fern-like vascular plants, the sole genus in the family Psilotaceae and one of only two genera in the order Psilotales and the division Psilotophyta (the other being Tmesipteris). Image of Psilotum nudum made by Eric Guinther in Hawaii (near Kaneohe) in DEcember 2003 and released under the GNU Free Documentation License. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Divisions Green algae Chlorophyta Charophyta Land plants (embryophytes) Non-vascular plants (bryophytes) Marchantiophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) †Rhyniophyta - rhyniophytes †Zosterophyllophyta - zosterophylls Lycopodiophyta - clubmosses †Trimerophytophyta - trimerophytes Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta... Families Psilotaceae Tmesipteridaceae Psilotophyta (the whisk ferns; also sometimes as Psilophyta) is a division (i. ... Families Psilotaceae Tmesipteridaceae Psilotophyta (the whisk ferns; also sometimes as Psilophyta) is a division (i. ... Families Psilotaceae Tmesipteridaceae Psilotophyta (the whisk ferns; also sometimes as Psilophyta) is a division (i. ... Carolus Linnaeus Carl Linnaeus, also known after his ennoblement as , (May 23, 1707 – January 10, 1778), was a Swedish botanist, physician and zoologist[1] who laid the foundations for the modern scheme of nomenclature. ... Olof Peter Swartz (September 21, 1760, Norrköping, Sweden – September 19, 1816, Stockholm, Sweden) was a Swedish botanist and taxonomist. ... Classes Marattiopsida Osmundopsida Gleicheniopsida Pteridopsida A fern, or pteridophyte, is any one of a group of about 20,000 species of plants classified in the Division Pteridophyta, formerly known as Filicophyta. ... Divisions Non-seed-bearing plants Equisetophyta Lycopodiophyta Psilotophyta Pteridophyta Superdivision Spermatophyta Pinophyta Cycadophyta Ginkgophyta Gnetophyta Magnoliophyta The vascular plants are plants in the Kingdom Plantae (also called Viridiplantae) that have specialized tissues for conducting water. ...

They have traditionally been thought not to be true ferns, but rather, odd "primitive" vascular plants that reproduce solely by spores, without seeds. Recent evidence has however suggested that they may in fact be ferns that have lost a number of pteridophytic characteristics, but their status is still uncertain. Spores produced in a sporic life cycle. ... A ripe red jalapeno cut open to show the seeds For other uses, see Seed (disambiguation). ...

There are two species, Psilotum nudum and Psilotum complanatum, with a hybrid between them known, Psilotum x intermedium W. H. Wagner. Warren H. Wagner (August 29, 1920 - January 8, 2000) was an eminent American botanist who lived in Michigan. ...

The distribution of Psilotum is tropical and subtropical, in the New World, Asia, and the Pacific. The highest latitudes known are in South Carolina and southern Japan for P. nudum. Carte dAmérique, Guillaume Delisle, c. ... World map showing the location of Asia. ... For other meanings of Pacific, see Pacific (disambiguation). ... Official language(s) English Capital Charleston(1670-1789) Columbia(1790-present) Largest city Columbia Largest metro area Greenville-Spartanburg-Anderson Area  Ranked 40th  - Total 34,726 sq mi (82,965 km²)  - Width 200 miles (320 km)  - Length 260 miles (420 km)  - % water 6  - Latitude 32°430N to 35...

Wikispecies has information related to:

Psilotaceae

Wikibooks Dichotomous Key has more about this subject:

Psilotaceae