. Botany for agricultural students . Botany. SUMMARY OF BAKIDIOMYCETES 403 Asparagus Rust. — Asparagus is often attacked by a Rust (Puccinia Asparagi) which is a type of those having but one host. The uredospores, teleutospores, and aecidiospores all occur on the Asparagus. Some other forms of Rusts of some importance occur on Clover, Alfalfa, Beans, Peas, Beets, Timothy, Corn, Peach trees, etc. Summary of Basidiomycetes. — Like the Ascomycetes the Basidiomycetes are parasites or saprophytes on land plants and have no motile spores. The Basidiomycetes are supposed to sporidia. aecidiospores Fi
. Botany for agricultural students . Botany. SUMMARY OF BAKIDIOMYCETES 403 Asparagus Rust. — Asparagus is often attacked by a Rust (Puccinia Asparagi) which is a type of those having but one host. The uredospores, teleutospores, and aecidiospores all occur on the Asparagus. Some other forms of Rusts of some importance occur on Clover, Alfalfa, Beans, Peas, Beets, Timothy, Corn, Peach trees, etc. Summary of Basidiomycetes. — Like the Ascomycetes the Basidiomycetes are parasites or saprophytes on land plants and have no motile spores. The Basidiomycetes are supposed to sporidia. aecidiospores Fig. 361. — Diagram showing life history of the Cedar Rust Fungus. A, Cedar tree; B, Apple tree. The sporidia from the teleutospores infect the Apple tree and the aecidiospores produced on the Apple foliage during summer reinfect the cedars. From Technical Bulletin 9, Virginia Agr. Exp. Sta. have been evolved from the Ascomycetes, and hence are farthest removed from the Algae, which they resemble very little. In such Basidiomycetes as the Toadstools and Puffballs, the most highly developed sporophores occur, while in the parasitic Basidiomycetes, as the Smuts and Rusts, the mycelium is scat- tered through the host and is only visible through the production of spore masses. Such forms as the Toadstools, Mushrooms, and Puffballs reproduce entirely by basidiospores, while in the reproduction of the Smuts brand and basidiospores are involved, and in the reproduction of Rusts there are four kinds of functional spores — uredo-, teleuto-, basidio-, and aecidiospores, — and the non- functional Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Martin, John N. (John Nathan), b. 1875. New York : John Wiley & Sons, Inc.
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