Synonyms: Crocisporium rubellum, Crocysporium rubellum, Oidium monosporium, Oidium rubellum, Ovularia canaegricola, Ovularia monosporia, Ovularia obliqua, Ovularia obovata, Ovularia rubella, Ramularia monosporia, Ramularia obovata.
Common names: Ramularia leaf spot, Red Dock Spot.
Extract from Wikipedia article: Ramularia rubella is a plant pathogen in Ascomycota that infects Rumex species. Infection produces reddish spots on leaves. The red color is caused by the production of rubellin, a photodynamic anthraquinone-derived phytotoxin. R. rubella was originally described from Rumex aquaticus in Germany; it has a wide geographic range on Rumex species. It is being investigated as a biological control agent of Rumex obtusifolius.
Ramularia leaf spot fungus (Ramularia rubella) on curly dock (Rumex crispus) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
23668 FM 1155, Washington, TX 77880, USA
Close-up of Ramularia leaf spot fungus (Ramularia rubella) on curly dock (Rumex crispus) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 202123668 FM 1155, Washington, TX 77880, USA
Leaves of curly dock (Rumex crispus) with reddish purple blotches caused by fungus Ramularia rubella in Bee Creek Park. College Station, Texas, February 24, 20231899, Anderson Street, College Station, Brazos County, Texas, 77840, United States
Close-up of a leaf of curly dock (Rumex crispus) with reddish purple blotches caused by fungus Ramularia rubella in Bee Creek Park. College Station, Texas, February 24, 20231899, Anderson Street, College Station, Brazos County, Texas, 77840, United States
Underside of a leaf of curly dock (Rumex crispus) with reddish purple blotches caused by fungus Ramularia rubella in Bee Creek Park. College Station, Texas, February 24, 20231899, Anderson Street, College Station, Brazos County, Texas, 77840, United States
Read leaf of curly dock (Rumex crispus) with fungus Ramularia rubella under a microscope in KOH, collected in Bee Creek Park. College Station, Texas, February 24, 2023
Read leaf of curly dock (Rumex crispus) with fungus Ramularia rubella under a microscope (in Melzer, low magnification), collected in Bee Creek Park. College Station, Texas, February 24, 2023
Read leaf of curly dock (Rumex crispus) with fungus Ramularia rubella under a microscope (in Melzer), collected in Bee Creek Park. College Station, Texas, February 24, 2023
Some round structure on a leaf of curly dock (Rumex crispus) with fungus Ramularia rubella under a microscope (in Melzer), collected in Bee Creek Park. College Station, Texas, February 24, 2023
Leaf of curly dock (Rumex crispus) with fungus Ramularia rubella under a microscope (in KOH), collected in Bee Creek Park. College Station, Texas, February 24, 2023Mushroom Observer and Facebook for learning names of local mushrooms.
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