Systems of Classifying the Deuteromycetes
Historical Taxonomy
Presence of Sporocarp (conidioma; conidiomata): pycnidium; acervulus; sporodochium; synnema; none--hyphae loose (see pg. 116 of handout); see Figure 8-3, pg. 221 of Alexopoulos.
Type of spore: base on color, number of septa, shape, and L/D relationship (see page 116 of handout; Figure 8-2 and Table 8-1, pp. 219-220 of Alexopoulos.
Modern Taxonomy: Based on diversity:
Conidiophore: absent; unbranched; branched (irregular; dichotomous; sympodial); vesicle or not.
Conidiogenous cell: specialized- phialide, annellide, ampullate
Locus on conidiogenous cell: Stable; Unstable (Progressive (apical; that is acroauxic); Retrogressive (basal; that is basoauxic)
Sequence of Conidiogenesis: Solitary; Multiple (Simultaneous; Serial (Catenulate; Sympodial)
Location of youngest conidium: Acropetal ; Basipetal
Origin of Conidium
From pre-existing cells- thallic
Enlargement of conidium- blastic
Both walls holoblastic
Not outer wall enteroblastic
Spore Types:
Thallic
Thallospores
Arthrospores
Meristem Arthrospores
Holoblastic
Blastospores
Botryoblastospores
Aleuriospores
Sympoduliospores
Annellospore (in part)
Enteroblastic
Tretic (tretum= a channel)
Porospores
Phialidic
Phialospore
Annellospore
Sympoduliospore
Some specialized groups
Aeroaquatic: helicospores and staurospores
Predaceous Fungi (see handout)
Phylogenetic Classification
Review Tables 8-3 (pg. 237) and 8-4 (pg. 240)