Lecture supplements

4.16.12 Ferns and Early vascular plants

Types of Vasculature in Early land plants

Types of Leaves in early land plants

Extinct Phyla of early vascular plants

Cooksonia fossil; a member of the Rhyniophyta phylum

Lycopodium sp

Lycopodium sp

Lycopodium life cycle

Selaginella sp

Selaginella sp

Selaginella sp

Selaginella sp

Selaginella life cycle

Quillworts: Isoetes sp

Phylum Pteridophyta

Phylum Pteridophyta

Phylum Pteridophyta

Phylum Pteridophyta

Phylum Pteridophyta

Life cycle of Filicales

Water Fern

Water Fern- sporocarps

Psilotum (Whisk Fern) Life cycle

Equisetum: vegetative vsreproductive shoots

Equisetum life cycle

Phylogeny of the tracheophytes

Lab slides

Prelab Quiz

1. How do club mosses (Lycopodium) differ from whisk ferns (Psilotum)?

2. Name one of the odd uses of Lycopodium spores.

3. What is the difference between a microspore and a megaspore?

4. What are fern leaves called?5. What is circinate vernation?

Sporophylls of Lycopodium and Selaginella

Fern Sporangium Dynamics and Annulus