Lower Vascular Plants - Filicophyta Image Index

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Eusporangiate Ferns - Ophioglossales & Marattiales

Botrychium obliquum - "coarse-lobed grape fern"	Botrychium virginianum - another "grape fern"	Ophioglossum flat	Ophioglossum - habit viev


Ophioglossum fertile spike, l.s.	Ophioglossum stem x.s.	Angiopteris	Angiopteris sp.


Marattia synangium x.s.	Danaea wendlandii - a walking fern from Costa Rica	Danaea wendlandii - gametophytes with attached sporophytes	Danaea wendlandii fertile pinna

Filicales - Stelar Anatomy

Dennstaedtia rhizome x.s.	Dennstaedtia rhizome x.s.	Gleichenia rhizome x.s.	Gleichenia rhizome x.s. - close up


Gleichenia rhizome x.s. - close up of "mixed pith"	Osmunda rhizome x.s.	Osmunda rhizome x.s.	Pteris rhizome x.s.


Pteridium rhizome x.s.	Matonia rhizome x.s.	Alsophila stem x.s.	Cookieales

Filicales - Soral Position and Indusium Type

Tree fern croziers	Osmunda cinnamomea croziers	Osmunda cinnamomea fertile fronds	Osmunda sp. – close up, sporangia attached to ultimate leaf segments


Polypodium sp. sori – naked, sori abaxial position	Fern sori (Pteridium sp.) – coenosorus, continuous sorus protected by leaf margin	Dennstaedtia cicutaria – marginal sori	Dennstaedtia cicutaria – close-up of sorus, cup-shaped indusium


Davallia sp. – submarginal position, pocket-like indusium	Davallia sp. – close-up, pocket-like indusium	Woodwardia sp. – unilateral indusiua	Woodwardia sp. – unilateral indusium, close-up


Polypodium sp. – exidusiate (no indusium), abaxial sori	Cystopteris sp. – abaxial position, reniform indusium	Cystopteris sp. – close-up, reniform indusium	Cyrtomium falcatum – peltate indusium, abaxial position


Cyrtomium falcatum – close-up, peltate indusium	Cyrtomium sp. – sorus, median longitudinal section (m.l.s.)	Fern leptosporangium – whole mount	Asplenium sp. – mature leptosporangia