Systematics and Evolution, Part A The Mycota

within the monotypicMixia osmundae, which
produces hundreds of exogenous, enteroblastic
spores at a time from a single saclike sporoge-
nous cell (Nishida et al. 1995 ). Although the life
cycle of this fungus remains to be fully
described, recent genomic studies have sug-
gested that the spores on these sporogenous
cells are likely mitotic (Toome et al. 2014 ).

A uniting feature of Pucciniomycotina is

the presence of simple septal pores that lack

dolipores and septal pore caps (parenthe-

somes) that otherwise characterize most Basi-

diomycota (Celio et al. 2006 ). The presence of

Woronin bodies in association with the septal

pore is characteristic of Pezizomycotina in the

Ascomycota. Although Woronin-like bodies

Fig. 10.4Representatives of Pucciniomycotina. a.Jola
cf.javensis(Platygloeales) fruiting onSematophyllum
swartzii(E. Frieders).b.Septobasidium burtii(Septo-
basidiales) fungal mat completely covering scale insects
(D. Henk). c.Eocronartium muscicola(Platygloeales)
fruiting on mossClimacium dendroides(E. Frieders). d.
Yeast and filamentous cells ofSporidiobolus pararoseus

(Sporidiobolales) (M.C. Aime). e. Cultures of twoSpor-

idiobolusspecies inS. pararoseusclade (Sporidiobo-

lales) (M.C. Aime). f.Phragmidiumsp. (Pucciniales)

onRosa rubiginosa(M.C. Aime). Figure from Aime

et al. ( 2006 ) and reprinted with permission ofMycolo-

gia. copyright The Mycological Society of America

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