Cladosporium chlorocephalum (= C. paeoniae) is a common, widespread leaf-spotting hyphomycete of peony (Paeonia spp.), characterised by having dimorphic conidiophores. During the season, one stage of this fungus causes distinct, necrotic leaf-blotch symptoms on living leaves of Paeonia spp. In late autumn, winter or after overwintering, a second morphologically distinct conidiophore type occurs on dead, blackish, rotting stems. Conspecificity of the two morphs, previously proposed on the basis of observations in culture, was supported by DNA sequence data from the ITS and LSU gene regions, using cultures obtained from leaf-blotch symptoms on living leaves, as well as from dead stems of Paeonia spp. Sequence data were identical, indicating a single species with two morphs. On account of its distinct conidiogenous loci and conidial hila, as well as its sequence-based phylogenetic position separate from the Davidiella/Cladosporium clade, the peony fungus has to be excluded from Cladosporium s. str., but still belongs to the Davidiellaceae (Capnodiales). The leaf-blotching (cladosporioid) morph of this fungus morphologically resembles species of Fusicladium, but differs in having dimorphic fruiting, and is phylogenetically distant from the Venturiaceae. The macronematous (periconioid) morph resembles Metulocladosporiella (Chaetothyriales), but lacks rhizoid conidiophore hyphae, and has 0-5-septate conidia. Hence, C. chlorocephalum is assigned to the new genus Dichocladosporium.

中文翻译：

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芍药属枝孢菌叶斑病和茎腐病。由 Dichocladosporium chlorocephalum 基因引起。十一月

Cladosporium chlorocephalum (= C.paeoniae) 是牡丹 (Paeonia spp.) 的一种常见的、广泛分布的带叶丝菌，其特征是具有二形分生孢子梗。在这个季节，这种真菌的一个阶段会在芍药属的活叶上引起明显的坏死叶斑症状。在深秋、冬季或越冬后，第二个形态不同的分生孢子梗出现在枯死、发黑、腐烂的茎上。先前根据培养观察提出的两种形态的同种性得到来自 ITS 和 LSU 基因区域的 DNA 序列数据的支持，使用从活叶上的叶斑症状以及芍药枯茎获得的培养物属 序列数据相同，表明具有两个变体的单一物种。由于其独特的分生孢子位点和分生孢子门，以及其基于序列的系统发育位置与 Davidiella/Cladosporium 进化枝分开，牡丹真菌必须从 Cladosporium s 中排除。str.，但仍属于 Davidiellaceae (Capnodiales)。这种真菌的叶斑病 (cladosporioid) 形态在形态上类似于 Fusicladium 的物种，但不同之处在于具有双态结果，并且在系统发育上与文氏菌科相距甚远。大线虫（periconioid）形态类似于 Metulocladosporiella (Chaetothyriales)，但缺少根状分生孢子梗菌丝，并且具有 0-5 隔分生孢子。因此，C. chlorocephalum 被归入新的 Dichocladosporium 属。这种真菌的叶斑病 (cladosporioid) 形态在形态上类似于 Fusicladium 的物种，但不同之处在于具有双态结果，并且在系统发育上与文氏菌科相距甚远。大线虫（periconioid）形态类似于 Metulocladosporiella (Chaetothyriales)，但缺少根状分生孢子梗菌丝，并且具有 0-5 隔分生孢子。因此，C. chlorocephalum 被归入新的 Dichocladosporium 属。这种真菌的叶斑病 (cladosporioid) 形态在形态上类似于 Fusicladium 的物种，但不同之处在于具有双态结果，并且在系统发育上与文氏菌科相距甚远。大线虫（periconioid）形态类似于 Metulocladosporiella (Chaetothyriales)，但缺少根状分生孢子梗菌丝，并且具有 0-5 隔分生孢子。因此，C. chlorocephalum 被归入新的 Dichocladosporium 属。