Lecture Notes8

Hemisphere hemisphere dicksonia brazil cyathea new

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Focus Plant 10: Seedless Vascular Plants; Bracken Fern (Pteridium aquilinum) Bracken Possibly world's most Possibly widespread plant species! widespread Europe, Asia, North America, Australia, New Zealand & South America. South Often forms large colonies— may be dominant ground may cover. cover. Fibrous petioles & triangular, tough, compound leaves. tough, Young leaves “fiddleheads” Young eaten as vegetable in some cultures (esp. Japan & korea) cultures Carcinogens: High rates of Carcinogens: stomach cancer among those that regularly eat bracken. that Bracken Fern in East Texas Bracken Common on dry sandy uplands where it forms extensive colonies. All remaining native ferns prefer moist or wet sites. The Fern Lifecycle (p 422). (p Alternates between 2 generations: Alternates Large, leafy sporophyte: Sporangium = spore-producing organ Sori = aggregations of sporangia on leaf. Small gametophyte = Prothallus: Small Develops from the spore. Develops Haploid, green, heart-shaped <1cm diameter. Haploid...
View Full Document

This document was uploaded on 03/28/2014 for the course BIO 131 at SFASU.

Ask a homework question - tutors are online