Fig. 5 in A phylogenetic survey of the ascomycete genus Arthrorhaphis (Arthrorhaphidaceae, Lecanoromycetes) including new species in Arthrorhaphis citrinella sensu lato

Fig. 5. Ascospore types distinguished in lichenised Arthrorhaphis (schematic redrawing based on illustrations in Obermayer, 1994, 1995; compare the cited literature for further details). A, Citrinella type; B, Alpina type; C, Vacillans type; D, Jungens type. — Ascospores of the citrinella type are arranged parallel, 1-seriate, while those of the alpina, vacillans, and jungens types are stacked in the asci. Ascospores of the variable jungens type are intermediary between the alpina and vacillans types, and either resembling the vacillans type but longer, or similar in size but 4–5(–7)-septate. — Scale: A–D, 10 μm.