: im internet finde ich gar nix gescheites, weder auf google noch sonst wo :-(

gib mal memnospores bei google ein und klick dann den 4. Link.

Den da: http://links.jstor.org/sici?sici=0003-0023(197410)93%3A4%3C599%3ADISOF%3E2.0.CO%3B2-D

und siehe da:

(1) Xenospores, generally small and short-lived, functioning mainly in dis-
persal to new sites. Conidia of Penicillium and sporangiospores of Rhizopus
are familiar examples.

(2) Memnospores, generally larger, long-lived, and with heavy walls, func-
tioning usually as a strategy to survive unfavorable conditions at their
place of origin. The zygospore of Rhizopus and the ascospore of Neurospora
are textbook examples. Dormancy, when found, is usually in this type of spore.

Nach Zygosporen und Ascosporen darfst du dann selbst googlen. *grins*