black stem

noun

, Plant Pathology.

1. a disease of plants, characterized by blackened stems and defoliation, caused by any of several fungi, as Ascochyta imperfecta or Mycosphaerella lethalis.

Example Sentences

The researchers collected fungus from black stem borers in an Ohio woodland.

From Science Magazine

What's more, the researchers found that ethanol promotes the growth of symbiotic fungi preferred by several other types of ambrosia beetles, suggesting the phenomenon is not unique to the black stem borer, Biedermann says.

From National Geographic

Next, the scientists raised black stem borers in the lab, exposing them to a tube full of sawdust.

From National Geographic

The 58-second color footage from “Operation Hardtack-1 — Nutmeg 51538” in 1958, in the Marshall Islands and other Pacific Ocean sites, is particularly breathtaking as it begins with a flash that fills the screen, then to the expanding mushroom cloud and the appearance of the black stem.

From Seattle Times

Most of the time they pass through, teetering on a steep hillside where they spend the morning hunched over to find the fungus’s crooked black stem poking through the dirt.

From New York Times