• Species: Hypocenomyce friesii (Ach.) P. James & Gotth. Schneid.
• Remark: see: Xylopsora friesii
• Fungus type: lichenized
• Treatment in Estonia: synonym
• Friesi soomussamblik

• Species: Hypocenomyce praestabilis (Nyl.) Timdal
• Remark: see: Pycnora praestabilis
• Fungus type: lichenized
• Treatment in Estonia: synonym

• Species: Hypocenomyce scalaris (Ach.) M. Choisy
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• trepp-soomussamblik

• Species: Hypocenomyce sorophora (Vain.) P. James & Poelt
• Remark: see: Pycnora sorophora
• Fungus type: lichenized
• Treatment in Estonia: synonym
• tera-soomussamblik

• Species: Hypogymnia farinacea Zopf
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• jahu-hallsamblik

• Species: Hypogymnia physodes (L.) Nyl.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• harilik hallsamblik

• Species: Hypogymnia tubulosa (Schaer.) Hav.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• toru-hallsamblik

• Species: Hypogymnia vittata (Ach.) Parrique
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• ääris-hallsamblik

• Species: Icmadophila ericetorum (L.) Zahlbr.
• Remark:
• Fungus type: lichenized
• Treatment in Estonia: certain
• harilik rabasamblik

• Species: Illosporiopsis christiansenii (B.L. Brady & D. Hawksw.) D. Hawksw.
• Remark: earlier under Hobsonia christiansenii B.L. Brady & D. Hawksw.
• Fungus type: lichenicolous
• Treatment in Estonia: certain

• Species:
• Remark:
• Fungus type:
• Treatment in Estonia: