Knotgrasses

Part of speech: noun

Definitions

1. Grass plants that exhibit a characteristic growth form, often found in wet and disturbed areas
2. Plants featuring dense clumps of slender stems that can grow in waterlogged soils
3. Species known for their unique knot-like appearances and adaptability to various habitats

Etymology: Knotgrass is a plant name, and the plural "knotgrasses" simply counts more than one kind of it. The name is a plain compound of "knot" and "grass," and it describes the plant's growth habit: its stems are jointed and knobbly at the nodes, and the plant spreads low across the ground in tangled mats. Its name in English thus refers to how the plant looks and grows rather than to any folk story or borrowed term. The "knot" half of the compound points to those swollen joints along the stems, which the word has long been used to describe in other plants too. Combined with "grass," the name tells a reader at once that this is a low, creeping, many-jointed grass-like plant.