SYSTEMATIC STUDIES IN THE SUBORDER AGYRIINEAE (LECANORALES)

抄録

  The circumscription of the Agyriineae and the relationships of the genera and families included in it are evaluated. The anatomy and ontogeny of the genera Agyrium, Amylora, Anzina, Elixia, Lithographa, Miltidea, Orceolina, Placopsis, Placynthiella, Ptychographa, Rimularia, Trapeliopsis, Wadeana and Xylographa are investigated. Four families are accepted in the suborder: Agyriaceae, Anamylopsoraceae, Elixiaceae, and Schaereriaceae. The Rimulariaceae, Saccomorphaceae, and Trapeliaceae are included in the Agyriaceae. The Miltideaceae and the genus Wadeana, formerly included in the Agyriineae, are excluded from the suborder, and placed in the suborder Acarosporineae of the Lecanorales or incertae sedis, respectively. The systematic position of the Agyriineae is discussed and its position in the Lecanorales questioned. The new family Elixiaceae Lumbsch and the new genus Elixia Lumbsch are described. The genus Hafellnera is placed into synonymy with Schaereria. The new combinations Elixia flexella (Ach.) Lumbsch and Schaereria parasemella (Nyl.) Lumbsch are proposed.