Puccinia graminis
Puccinia graminis
Regular price
$29.00 CAD
Regular price
Sale price
$29.00 CAD
Unit price
per
Free shipping. Made from 100% ring-spun cotton.
Four pustules of aecidia of Puccinia graminis, the Black Stem Rust Fungus, on the under side of a leaf of Berberis vulgaris, the Common Barberry. Each aecidium produced about 11,000 aecidiospores. Photographed by J. E. Howitt at the Ontario Agricultural College, Guelph. Magnified about three times.
Buller 1924.