A partial rbcL sequence from the type material of Spongites discoideus from southern Argentina showed that it was distinct from rbcL sequences of South African specimens to which that name had been applied based on morpho‐anatomy. A partial rbcL sequence from an original syntype specimen, herein designated the lectotype, of Lithophyllum marlothii, type locality Camps Bay, Western Cape Province, South Africa, was identical to rbcL sequences of South African field‐collected specimens assigned to S. discoideus. Based on phylogenetic analyses of rbcL and/or psbA sequences, both of these species belong in Pneophyllum and are transferred there as P. discoideum comb. nov. and P. marlothii comb. nov. The two species exhibit a distinct type of development where thick, secondary, monomerous disks are produced from thin, primary, dimerous crusts. Whether this type of development represents an example of convergent evolution or is characteristic of a clade of species within Pneophyllum remains to be resolved.

中文翻译：

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类型材料的DNA测序揭示了金缕梅梳。十一月 来自南非和P. discoideum梳。十一月 （Chamberlainoideae，Corallinales，Rhodophyta）来自阿根廷。

的部分RBC离型材料L序列Spongites discoideus从阿根廷南部表明，它不同于RBC南非的L个序列标本，该名称已应用于基于形态解剖它。的部分RBC从原始共型标本1序列，本文指定选型，的Lithophyllum marlothii，类型局部性坎普斯湾，西开普省，南非，是相同的RBC分配给南非现场采集的试样的L个序列S. discoideus。基于rbc L和/或psb的系统发育分析这两个物种的一个序列都属于叶脉菌，并以迪斯科假单胞菌梳子的形式转移到那里。十一月 和P. marlothii梳子。十一月 这两个物种表现出不同的发育类型，其中厚的，次生的，单体的圆盘由稀薄的，初生的，二重结壳产生。这种类型的发展是否代表趋同进化的一个例子或是叶脉内物种进化枝的特征尚待解决。