#ascomycetes

• Ascus — A microscopic, sac-like reproductive cell characteristic of fungi belonging to the Ascomycetes class, inside of which endogenous spores called ascospores are formed (typically eight) following a sexual process. This structural feature plays an essential role in fungal taxonomic classification and biological dispersal.
• Asci — The plural form of the noun 'ascus'; microscopic reproductive cells specific to fungi of the class Ascomycetes, having the appearance of elongated sacs or tubes. Inside these cellular structures, following the process of meiosis followed by mitosis, ascospores (usually eight) are formed, ensuring the dissemination and perpetuation of the species in the environment.
• Ascogeny — The biological process of formation and development of asci in fungi of the class Ascomycetes, following the plasmogamy phase. This ontogenetic stage involves the growth of dikaryotic ascogenous hyphae from the ascogonium, culminating in nuclear fusion (karyogamy) and meiotic cell divisions that lead to the emergence of sexual spores.
• Ascolichen — A lichen whose fungal biont (the symbiotic fungal component) belongs to the class of ascomycetes, structurally characterized by reproduction through asci and ascospores. In the plural form, it denotes a vast taxonomic group of lichens (Ascolichenes) comprising the majority of known species, adapted to grow on tree bark, rocks, or soil.
• Aspergillales — An order of ascomycete fungi (Aspergillales or Eurotiales) that groups species of saprophytic or parasitic microscopic molds, characterized by branched filaments and asexual reproduction through conidia arranged in radial heads; they hold colossal economic and medical importance, including genera from which antibiotics are extracted or which produce dangerous mycotoxins.