Synonyms: Blastotrichium puccinioides, Hypolyssus ochraceus, Hypomyces terrestris, Sphaeria citrina, Sphaeria ochracea, Verticillium agaricinum.
Hypomyces ochraceus is a parasitic ascomycete fungus that infects and forms bright orange to yellowish-orange perithecia on various species of bolete mushrooms, particularly those in the genus Boletus. In East and Central Texas, it has been found growing on hosts such as Boletus rubroflavus and Boletus subvelutipes, typically in wooded areas with rich soil and abundant tree cover, during the summer and fall months.
White mold Cladobotryum verticillatum on milkcap (Lactarius) mushrooms (anamorph form of Hypomyces ochraceus, or Hypomyces armeniacus) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, November 27, 2019
Lone Star Hiking Trail, Shepherd, TX 77371, USA
White mold Cladobotryum verticillatum on caps of Lactarius mushrooms (anamorph form of Hypomyces ochraceus, or Hypomyces armeniacus) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, November 27, 2019Lone Star Hiking Trail, Shepherd, TX 77371, USA
Gills of a milkcap (Lactarius) mushroom with white mold Cladobotryum verticillatum (anamorph form of Hypomyces ochraceus, or Hypomyces armeniacus) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, November 27, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Cap of a milkcap (Lactarius) mushroom with white mold Cladobotryum verticillatum (anamorph form of Hypomyces ochraceus, or Hypomyces armeniacus) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, November 27, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Milkcap (Lactarius) mushroom with mold Cladobotryum verticillatum (anamorph form of Hypomyces ochraceus, or Hypomyces armeniacus) on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, December 7, 2019Lone Star Hiking Trail, Cleveland, TX 77328, USA
Underside of milkcap (Lactarius) mushroom with mold Cladobotryum verticillatum (anamorph form of Hypomyces ochraceus, or Hypomyces armeniacus) on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, December 7, 2019Lone Star Hiking Trail, Cleveland, TX 77328, USA
Dissected milkcap (Lactarius) mushroom with mold Cladobotryum verticillatum (anamorph form of Hypomyces ochraceus, or Hypomyces armeniacus) on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, December 7, 2019Lone Star Hiking Trail, Cleveland, TX 77328, USA
Mild milkcap (beech milk cap) mushrooms Lactarius subdulcis (Lactarius oculatus) with fungus Hypomyces ochraceus on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 23, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Mild milkcap (beech milk cap) mushrooms Lactarius subdulcis (Lactarius oculatus) with mold like fungus Hypomyces ochraceus on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 23, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USAObservations of the fungus Hypomyces ochraceus in East and Central Texas revealed its presence on milkcap (Lactarius) mushrooms. The anamorph form of Hypomyces ochraceus, Cladobotryum verticillatum, was found as a white mold on the caps and gills of Lactarius mushrooms in Big Creek Scenic Area of Sam Houston National Forest in November 2019. Similar observations were made on Winters Bayou Trail in December 2019. In May 2020, Hypomyces ochraceus was observed on mild milkcap (beech milk cap) mushrooms Lactarius subdulcis on Caney Creek Trail in Sam Houston National Forest. The fungus was seen as a mold-like growth on the mushrooms, with some observations showing it covering the entire cap or underside of the mushroom. These findings suggest that Hypomyces ochraceus is present in various locations throughout East and Central Texas.
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