Wrigley de Basanta D, Lado C, Estrada-Torres A
Real Jardín Botánico, CSIC, Plaza de Murillo 2, 28014 Madrid, Spain.
Mycologia. 2008 Nov-Dec;100(6):921-9. doi: 10.3852/07-168.
A new species of myxomycete, Didymium umbilicatum, isolated from the bark of Agavaceae, is described from arid zones of Mexico. This species was obtained from moist chamber cultures of Yucca spp. bark, collected in four different years from two states (Puebla and Querétaro) in central Mexico and found in the field from Hidalgo, Oaxaca and Puebla on the dead remains of Agave sp. The new species has small, flat, white sporocarps or short plasmodiocarps, 0.2-1.3 mm diam, and 0.15-0.4 mm tall. They are sessile on a reduced base or have a short, calcareous pale stalk and warted spores, warts fused in an irregular subreticulum by SEM. It is the sixth species of Didymium recently described from arid areas. The stability of the taxonomic characters of the species was confirmed by spore-to-spore culture on agar. Life cycle events are described from germination to sporulation. The morphology of the myxomycete specimens was examined with scanning electron microscopy and light microscopy, and micrographs of relevant details are included.
从墨西哥干旱地区龙舌兰科植物树皮中分离出一种新的黏菌——脐形双皮菌，并对其进行了描述。该物种是从丝兰属植物树皮的湿室培养物中获得的，这些树皮于四个不同年份在墨西哥中部的两个州（普埃布拉州和克雷塔罗州）采集，并且在野外从伊达尔戈州、瓦哈卡州和普埃布拉州的龙舌兰属植物的死亡残骸上发现。该新物种具有小的、扁平的、白色的子实体或短的原质果，直径0.2 - 1.3毫米，高0.15 - 0.4毫米。它们在缩小的基部上无柄，或有短的、钙质浅色柄以及具疣的孢子，通过扫描电子显微镜观察，疣融合成不规则的近网状。它是最近从干旱地区描述的第六种双皮菌。通过在琼脂上进行孢子对孢子培养，证实了该物种分类特征的稳定性。描述了从萌发到产孢的生命周期事件。用扫描电子显微镜和光学显微镜检查了黏菌标本的形态，并包含了相关细节的显微照片。
