Leaf type: Oval, diamond-shaped (rhombic), rounded
Leaf margin: Smooth
Phyllotaxis: Whorled (basal leaves), opposite or fused (bracts)
Colour: Green
Life cycle: Annual, wintergreen in some regions
Leaf (upper side)
Growth habit & biology
Claytonia perfoliata can grow up to 30 centimeters tall when in bloom. The growing season of this annual plant in Central Europe lasts from November to April. In its natural range in North America and Central America, the seeds can germinate in autumn or spring.
The first basal leaves are still ovate, while those that appear later may be triangular or rhombic. The racemose inflorescence sits on two bracts that are fused together or arranged opposite each other.
Young leaves can be eaten raw or blanched, but contain oxalic acid.
Distribution & habitates
The original distribution area is in western North America and Central America. In Europe and other regions (including Cuba), the species grows as a neophyte (source).
Claytonia perfoliata colonizes partially sunny to semi-shaded locations and can be found on roadsides, in front of houses, in fields, weed patches, and ditches. Locations with evenly moist soil are ideal.
Botany
Claytonia perfoliata is commonly known as miner’s lettuce oder winter purslane and belongs to the Montiaceae family. It is not related to common purslane.
In some European regions, this plant is known as Cuban spinach due to its supposed arrival in Europe via Cuba (source).
