An ear of smutted oats.

Smutted oats

An ear of smutted oats.

Brown-rot, healthy peach above, diseased below

Healthy and diseased peaches

Brown-rot, healthy peach above, diseased below

Rosetelia cancellata fungi causes the leaves to become covered with large, raised spots that are deep red.

Pear Leaves Attacked by Roestelia Cancellata

Rosetelia cancellata fungi causes the leaves to become covered with large, raised spots that are deep…

"Fungi are either parasitic or, what is much the same thing, saprophytic– i. e., dependant upon decaying organic matter for food. The fungi are many of them a trouble in agriculture, causing corn, hop, and vine mildew, potato disease, and also salmon disease; others, like the mushroom, are saprophytes."—(Charles Leonard-Stuart, 1911)

Rafflesia Harrelli

"Fungi are either parasitic or, what is much the same thing, saprophytic– i. e., dependant upon…

Sphaeria rosella

Rosella

Sphaeria rosella

Sometimes known as Brown Rot, Monilinia fructigena is a plant pathogen. "Sclerotinia fructigena. a, the conidial form known as Monilia." -Whitney, 1911

Brown Rot

Sometimes known as Brown Rot, Monilinia fructigena is a plant pathogen. "Sclerotinia fructigena. a,…

Also known as Puccinia graminis. This fungus is a significant detriment to cereal crops. It is currently spreading across Africa, Asia, and the Middle East. This image depicts a a spore of the fungus germinating and producing Sporidia on the tips of small stalks.

Stem Rust

Also known as Puccinia graminis. This fungus is a significant detriment to cereal crops. It is currently…

"Fungi are either parasitic or, what is much the same thing, saprophytic– i. e., dependant upon decaying organic matter for food. The fungi are many of them a trouble in agriculture, causing corn, hop, and vine mildew, potato disease, and also salmon disease; others, like the mushroom, are saprophytes."—(Charles Leonard-Stuart, 1911)

Scybalium Fungiforme

"Fungi are either parasitic or, what is much the same thing, saprophytic– i. e., dependant upon…

"Shaggy-mane (Coprinus comatus) a, young specimen; b, section through a specimen older than a." -Whitney, 1911

Shaggy Mane

"Shaggy-mane (Coprinus comatus) a, young specimen; b, section through a specimen older than a." -Whitney,…

"An ear of wheat with smut, a disease of corn caused by fungi."—Finley, 1917

Ear of wheat with smut

"An ear of wheat with smut, a disease of corn caused by fungi."—Finley, 1917

A germinating spore of smut, a fungus that effects corn crops.

Germinating spore of smut

A germinating spore of smut, a fungus that effects corn crops.

The Split Gill mushroom (Schizophyllum commune): "a, Schizophyllum alneum; b, gills, or lamellae, enlarged; c, cross-section of pileus showing split and revolute lamellae." -Whitney, 1911

Split Gill

The Split Gill mushroom (Schizophyllum commune): "a, Schizophyllum alneum; b, gills, or lamellae, enlarged;…

St. George's Mushroom is the common name of agaricus gambosus. This species appears in the spring. This mushroom is edible.

St. George's Mushroom

St. George's Mushroom is the common name of agaricus gambosus. This species appears in the spring. This…

"Many cells, but without differentiation into stem and leaf; growing horizontally in spreading shoots or fronds, as the algae, or sea-weeds; fungi, or toad-stools; and the lichens.

Toad-stool

"Many cells, but without differentiation into stem and leaf; growing horizontally in spreading shoots…

Inside of the broken limb, showing the decay that entered.

Inside the Tree Limb

Inside of the broken limb, showing the decay that entered.

The decayed hole where a limb was removed. The wood-destroying fungi caused the tree to break.

A Hole in a Tree

The decayed hole where a limb was removed. The wood-destroying fungi caused the tree to break.

A long stub left in pruning. The wound cannot heal. The tape shows how far the trunk is hollow. The tree will soon blow over.

Stub of a Limb of a Tree

A long stub left in pruning. The wound cannot heal. The tape shows how far the trunk is hollow. The…

"Amanita is a genus of fungi, nearly allied to the mushrooms. Several of the species are edible, notably the delicious orange (A. cæsarea), but the majority are poisonous."—(Charles Leonard-Stuart, 1911)

Young Amanita

"Amanita is a genus of fungi, nearly allied to the mushrooms. Several of the species are edible, notably…