Leptosporangiate Fern - Phylogenic Relationships

Phylogenic Relationships

The following phylogram shows a likely relationship between the other vascular plant classes and the leptosporangiate ferns. Note that it's not clear whether the sister of Polypodiopsida is Marattiopsida, Equisetopsida, or possibly a Marattiopsida-Equisetopsida clade.

Trachaeophyta

lycophytes (club mosses, spike mosses, quillworts)

euphyllophytes

spermatophytes (seed plants)

ferns

Psilotopsida

	Psilotales (whisk ferns)

	Ophioglossales (adder's tongues)

Equisetopsida

	Equisetales (horsetails)

Marattiopsida

	Marattiales

Polypodiopsida

Osmundales

Hymenophyllales

Gleicheniales

Schizaeales

Salviniales

	Cyatheales

	Polypodiales

eusporangiate
ferns leptosporangiate
ferns

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