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Bacteria are a species of fungi coming under the division of the fission fungi: besides the fission there are two other varieties, the mould and budding fungi.
The mould fungi are divided into Penecilium, Aspergillus and Mucor, being distinguished by the difference in growth of the seed stalk. The base or substratum of all is a mass of anastomosing threads, extending in every direction, forming a mycelium: from this extends the seed stalk.
Penecilium: The seed stalk extends upward like a pencil. It has no male or female members. The oldest spore is always the terminal one, being pushed out by the younger members. The distinguishing characteristic is that the spores grow on branches.
Aspergillus: When the spores of penecilium are joined together closely it forms the second variety—aspergillus—the spores here growing in masses on a head.
Mucor: Here the spores are enclosed in a capsule, which has a brown
NELSON SN. METHODS OF EXAMINATION OF BACTERIA FOR LABORATORY PURPOSES.Based upon Notes taken in Prof. Koeh's Laboratory in Berlin.. JAMA. 1888;X(13):381–386. doi:10.1001/jama.1888.02400390001001