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Handout
Ohio State University

General Plant Biology: Seedless Vascular Plants

For Students 9th - 10th
Use this very concise summary except to become familiar with these examples of less complex plants. Some of the terminology is at a more advanced level.
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eBook
Other

Ohio State University: Cryptogamia (Seedless Plants)

For Students 9th - 10th
Psilophyta, lycophyta, sphenophyta, are the three divisions of plants depicted in this focused site. Examples of each division is provided along with pictures.