ABSTRACT

To document sequestrate fungal diversity in American tropical regions, we performed a series of field surveys in southeastern Mexico and discovered two new species in the phalloid genus Restingomyces (Trappeaceae, Phallales). Here, we describe them based on morphological and phylogenetic analyses of mitochondrial adenosine triphosphatase (ATPase) subunit 6 and nuc 28S rDNA. Restingomyces guzmanianus is characterized by the brownish peridium, yellowish brown gleba, and ellipsoid basidiospores, whereas R. yaaxtax is characterized by the white peridium, pale green gleba, and small ellipsoid basidiospores. Both species occur in medium-statured tropical dry forest. The original diagnosis of the genus Restingomyces is emended to include these novel species. Illustrations are provided.

摘要

为了记录美洲热带地区隔离的真菌多样性，我们在墨西哥东南部进行了一系列实地调查，发现了两个新物种，属于雷丁菌属（Trappeaceae，Phallales）。在这里，我们根据线粒体腺苷三磷酸酶 (ATPase) 亚基 6 和 nuc 28S rDNA 的形态学和系统发育分析来描述它们。Restingomyces guzmanianus的特征是带褐色的孢子、黄褐色的 gleba 和椭圆形担孢子，而R. yaaxtax的特征是白色的孢子、淡绿色的 gleba 和小的椭圆形担孢子。这两个物种都出现在中等规模的热带干燥森林中。Restingomyces属的原始诊断被修正为包括这些新物种。提供插图。