Nostoc commune

Nostoc commune: From "The Blob" to Crusty Black Stuff

Recent heavy rainfall across Ohio has been very beneficial to the cyanobacterium, Nostoc commune (NC). Of course, that's not the name that most Ohioans will use to refer to this ancient organism. E-mails and phone calls to horticulture professionals may describe it as rubbery yellowish-green or bluish-black growth rising from the soil; some may just describe it as "the blob."
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Joe Boggs