Earth Loosestrife (Lysimachia terrestris)

Earth Loosestrife (Lysimachia terrestris)

Earth Loosestrife (Lysimachia terrestris); also called Swamp-candles, Yellow Loosestrife, Swamp Loosestrife, Swamp Yellow Loosestrife, Lake Loosestrife and Bulbil Loosestrife; is an erect, perennial, forb/herb in the Primrose family (Primulaceae) and Primulales order. The order and family names are from the Latin for "primrose." The genus name is likely from the Greek for" release from strife (lysis mache)." The species name is from the Latin for "on land." In spite of the species name, this plant is found in bogs, shores and in shallow water. The plant shown in the photographs on this page was in very shallow water at the edge of the island in French Hill Pond. This plant can grow to a height up to three feet (90 centimeters).

The flower has five, yellow, sharp-pointed petals up to ½ inch (1.27 centimeters) wide and five stamen. The base of each petal is marked with  rust-colored dots that collectively form a ring around the stamen. The flowers are arranged in a terminal spike (raceme) up to a foot (30 centimeters) long. this plant blooms from June to August.

Earth Loosestrife (Lysimachia terrestris) Detail

The leaves are lanceolate, opposite, with sharp points at both ends and up to four inches (10 centimeters) long. The leaves may be dotted.

The fruit is a small, red bulbil, that is, a bulb that forms in the axis of the leaves after flowering that will fall off the plant and take root in the soil..

The root system is a rhizome.


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