- Field sorrel, Red sorrel, Red-top sorrel, Cow sorrel, Mountain sorrel, Horse sorrel, Sour-grass, Sour-weed, Red-weed, Indian cane
- Acetosella acetosella, A. tenuifolia, A. vulgaris, Rumex angiocarpus, R. tenuifolius
- An herbaceous perennial, 6-12 inches tall.
- linear or lanceolate upper leaves
- lower leaves arrow shaped
- lobes at base with possible teeth
- simple or branched
- silvery sheaths
- Small flowers with six sepal-like petals growing on erect panicled racemes. The outer sepals are green, the inner three sepals are larger and colored.
- triangular achene
- reddish brown
- flower parts sometimes remain attached
- spreads vegetatively by creeping rhizomes
- seeds are dispersed by wind and insects
Key ID Features:
- light green halberd-shaped leaves
- red tiny flowers
- Garden sorrel (Rumex acetosa) closely resembles Sheep sorrel but is a larger plant.
- Grows in sour soils
- On Nantucket, this species is found in natural areas, where it frequently grows in dense, circular populations that have been expanding over time. In June this plant gives the moors their red color.
Growth Form: Herb
Origin: Europe, Russia, Middle East, North Africa
Level of Invasiveness for Nantucket: Likely Invasive
Level of Invasiveness for Massachusetts: Not evaluated
Massachusetts Cultivation Restrictions: no