pycnidium

As nouns the difference between apothecium and pycnidium

is that apothecium is (label) the ascigerous fructification of lichens, forming masses of various shapes while pycnidium is in certain fungi, a flask-shaped cavity from the surface of the inner walls of which spores are produced.

As nouns the difference between pycnidium and perithecium

is that pycnidium is in certain fungi, a flask-shaped cavity from the surface of the inner walls of which spores are produced while perithecium is an ascocarp shaped like a skittle or ball, distinguished by a small pore, the ostiole, through which the spores are released one by one when ripe.

As nouns the difference between pseudothecium and pycnidium

is that pseudothecium is an ascocarp resembling a perithecium but whose asci are not regularly organised into a hymenium and are bitunicate, having a double wall which expands when it takes up water and shoots the enclosed spores out suddenly to disperse them while pycnidium is in certain fungi, a flask-shaped cavity from the surface of the inner walls of which spores are produced.

As nouns the difference between pycnidium and aecium

is that pycnidium is in certain fungi, a flask-shaped cavity from the surface of the inner walls of which spores are produced while aecium is a cuplike fruiting structure of some parasitic fungi (rusts) that contains chains of aeciospores.

Pycnium is likely misspelled.

Pycnium has no English definition.

As a noun pycnidium

is in certain fungi, a flask-shaped cavity from the surface of the inner walls of which spores are produced.

Acervulum is likely misspelled.

Acervulum has no English definition.

As a noun pycnidium is

in certain fungi, a flask-shaped cavity from the surface of the inner walls of which spores are produced.

As nouns the difference between acervulus and pycnidium

is that acervulus is calcified concretions near the pineal gland; brain sand while pycnidium is in certain fungi, a flask-shaped cavity from the surface of the inner walls of which spores are produced.

As nouns the difference between conidia and pycnidium

is that conidia is plural of lang=en while pycnidium is in certain fungi, a flask-shaped cavity from the surface of the inner walls of which spores are produced.