Seven species of Cliostomum Fr. recorded from Australia are treated. These include the widespread C. griffithii (Sm.) Coppins, the austral C. praepallidum (Müll. Arg.) Kantvilas & Fryday and the Tasmanian endemic C. vezdae Kantvilas, a reinstated name previously subsumed under C. flavidulum Hafellner & Kalb. Three species are described as new: C. latisporum Kantvilas, a corticolous species containing atranorin and gangaleoidin from coastal Tasmania and New South Wales, characterized by pale pink, soon immarginate apothecia, 0.3–0.9 mm wide, non-capitate, unpigmented paraphyses, and relatively wide, 1(–3)-septate ascospores, 9–15 × 4–6 μm; C. litorale Kantvilas, a saxicolous species containing atranorin and confluentic acid, recorded only from Tasmania, with relatively large, usually pale pinkish apothecia, 0.6–1.5 mm wide, non-capitate paraphyses, and 1(–2)-septate ascospores, 9–13 × 4−6 μm; and C. saxatile Kantvilas, a saxicolous species containing atranorin and lecanoric acid, also known only from Tasmania, with dark brown to black apothecia, 0.3–0.5 mm wide, pigmented with Laurocerasi-brown, capitate paraphyses, and 1-septate ascospores, 7–14 × 3–5 μm. The widespread, coastal Australasian species Tylothallia verrucosa (Müll. Arg.) Kantvilas is transferred to Cliostomum, with the additional synonym Catillaria brisbanensis Räsänen. Megalaria variegata (Müll. Arg.) D. J. Galloway, based on a New Zealand type, is a further synonym of Cliostomum griffithii. All species are illustrated and described on the basis of Australian and Tasmanian specimens.

七种Cliostomum Fr. 处理来自澳大利亚的记录。其中包括广泛分布的C. griffithii (Sm.) Coppins、南方的C. praepallidum (Müll. Arg.) Kantvilas & Fryday 和塔斯马尼亚特有的C. vezdae Kantvilas，后者是之前归入C. flavidulum Hafellner & Kalb 的恢复名称。三个新物种被描述为：C. latisporum Kantvilas，一种来自塔斯马尼亚沿海和新南威尔士州的含有 atranorin 和 gangaleoidin 的皮质物种，其特征是淡粉色、不久无边缘的子囊、0.3-0.9 毫米宽、非头状、无色素的副骺端，以及相对较宽，1(–3)-有隔膜的子囊孢子，9–15 × 4–6 μm；C. litorale Kantvilas，一种含有阿曲诺林和汇合酸的石室菌属物种，仅记录于塔斯马尼亚，具有相对较大、通常淡粉色的子壳，0.6-1.5 毫米宽，非头状副体，以及 1(-2)-隔膜子囊孢子，9 –13 × 4−6 μm；C. saxatile Kantvilas，一种含有 atranorin 和 lecanoric 酸的伞生物种，也仅产自塔斯马尼亚，具有深棕色至黑色子囊壳，0.3-0.5 毫米宽，涂有 Laurocerasi 棕色、头状副骨和 1 个隔膜子囊孢子，7 –14 × 3–5 微米。分布广泛的澳大利亚沿海物种Tylothallia verrucosa (Müll. Arg.) Kantvilas 被转移到Cliostomum中，并附加了同义词Catillaria brisbanensis Räsänen。Megalaria variegata (Müll. Arg.) DJ Galloway 基于新西兰类型，是Cliostomum griffithii的另一个异名。所有物种均根据澳大利亚和塔斯马尼亚标本进行说明和描述。