Sclerotium rolfsii var. delphinii was isolated from the bases of discolored petioles on wilted, yellow leaves of Pulmonaria longifolia (cultivar unknown), an herbaceous perennial growing in a landscape planting in Ames, IA. White mycelia and brick red, 2- to 3-mm-diameter sclerotia were found on
Apothecia of Lobaria oregana and L. pulmonaria emerge in late spring and discharge ascospores throughout the year. Most populations have a few fertile thalli, although the proportion of fertile thalli usually is less than 25 percent. Ascospores fail to germinate in water or on water agar but do
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