black stem

noun

, Plant Pathology.

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

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Ben could make out the black stem line of a jutting flintlock.

A large tree fern, growing from ten to forty feet high, with a slender black stem, and dark green fronds silvery underneath.

I noticed two varieties of the maiden-hair, its slender black stem making the most exquisite tracery among the vivid greens.

A strong, black stem with bright green leaves is apt to look crude and hard.

This is due to the coal-black stem, which gives to a palm tree shorn of its head the look of a tumble-down smoke-grimed chimney.

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