SUMMARY OF BASIDIOMYCETEN 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 
te @ 
teleutospore A _@ 
4 //* 
aecidjospores 
« = ML 
a 
Fic. 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 Puftballs 
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 spermatia. 
