X hits on this document

PDF document

Vascular Plants - a quick review - page 12 / 12

30 views

0 shares

0 downloads

0 comments

12 / 12

Phylum Polypodiophyta

Onocleaceae- sensitive fern family

2 genera in Wisconsin (also Matteuccia – ostrich fern). Sensitive ferns has dimorphic fronds. Sterile frond pinnately lobed. Fertile frond turning black.

Onoclea sensibilis Sensitive fern

Phylum Polypodiophyta

Polypodiaceae - rockcap family

40 genera and over 500 species in tropics and subtropics, but a single species in Wisconsin.

Distinctive fronds: simple, pinnately lobed; leathery. Colonizes bare rock.

Sori in two rows on each lobe.

Polypodium virginianum Rockcap fern

Phylum Polypodiophyta

Dryopteridaceae - woodfern family

Large and diverse group of ferns; often broadly defined to include other smaller families. 2 genera and 13 species in Wisconsin.

Polystichum acrostichoides Christmas fern

Dryopteris intermedia Shield fern

Phylum Polypodiophyta

Western & SE coastal elements

Salviniaceae (Azollaceae) - mosquito fern family

2 species in Wisconsin. Floating aquatic, reduced ferns with 2 ranked leaves, each 2 lobed. Symbiotic relationship with N2 fixing blue green bacteria Anabaena azollae. Heterosporous!

Azolla mexicana & A. caroliniana Floating fern

12

Document info
Document views30
Page views30
Page last viewedFri Dec 09 10:23:38 UTC 2016
Pages12
Paragraphs230
Words1800

Comments