Sheep Sorrel (Rumex acetosella) photo = Sorrel,Sheep_MAC_©DaveSpier_D029587iN_5D
Field, or Sheep, Sorrel (Rumex acetosella) is an edible alien. Appearance matches Newcomb's description: reddish-green flowers on branching racemes; leaves arrow-shaped with flaring lobes. Photo ref. = Sorrel,Field(Sheep)_ANP_©DaveSpier_D081105iN -- during the spring Allegany Nature Pilgrimage, Camp Allegany, Allegany State Park, NY
O'Neill Ranch Master Plan Draft Environmental Impact Report, February 1995
Growing in dune sands. Considered an invasive plant, it is difficult to eradicate.
Growing on shore of bog with Cakile edentula (American searocket), Lupinus littoralis (seashore lupine), and Holcus lanatus (common velvet grass). Flowers are orangish red and numerous along the stalk with 3 sepals and 3 petals. It's leaves are arrow shaped.
Rumex acetosella is a species of sorrel, bearing the common names sheep's sorrel, red sorrel, sour weed, and field sorrel. The plant and its subspecies are common perennial weeds. It has green arrowhead-shaped leaves and red-tinted deeply ridged stems, and it sprouts from an aggressive and spreading rhizome. The flowers emerge from a tall, upright stem. Female flowers are maroon in color.