''Lysimachia terrestris'' (swamp candles, lake loosestrife or earth loosestrife) is a

plant Plants are the eukaryotes that form the Kingdom (biology), kingdom Plantae; they are predominantly Photosynthesis, photosynthetic. This means that they obtain their energy from sunlight, using chloroplasts derived from endosymbiosis with c ...

in the family

Primulaceae The Primulaceae ( ), commonly known as the primrose family (but not related to the Onagraceae, evening primrose family), are a family (biology), family of Herbaceous plant, herbaceous and woody flowering plants including some favourite garden pla ...

Description

''Lysimachia terrestris'' is a

herbaceous plant Herbaceous plants are vascular plants that have no persistent woody stems above ground. This broad category of plants includes many perennials, and nearly all annuals and biennials. Definitions of "herb" and "herbaceous" The fourth edition o ...

with opposite, simple

leaves A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, ...

, and erect stems. The flowers are produced in a

raceme A raceme () or racemoid is an unbranched, indeterminate growth, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are ...

, long, at the top of the plant. The flowers are star-shaped with five yellow petals, and appear in mid-summer. Each petal has two red dots at its base forming a circle of ten red dots in the center of the flower. Late in the summer, reddish bulblets form in the leaf axils. They resemble caterpillars and may be mistaken for fruit.

Ecology and distribution

''Lysimachia terrestris'' grows in swamps and at the edges of ponds and lakes in the Eastern United States and in Eastern Canada. It is also found in the U.S. states of Oregon, Washington, and Idaho, and in British Columbia. It is listed as endangered in Tennessee and Kentucky. A major pest is '' Monostegia abdominalis'', a

sawfly Sawflies are wasp-like insects that are in the suborder Symphyta within the order Hymenoptera, alongside ants, bees, and wasps. The common name comes from the saw-like appearance of the ovipositor, which the females use to cut into the plant ...

whose

larva A larva (; : larvae ) is a distinct juvenile form many animals undergo before metamorphosis into their next life stage. Animals with indirect development such as insects, some arachnids, amphibians, or cnidarians typically have a larval phase ...

e can completely skeletonize the leaves.

References

External links

*
Lady Bird Johnson Wildflower Center−NPIN: ''Lysimachia terrestris''
* * * terrestris Flora of Eastern Canada Flora of the Eastern United States Flora of the Northwestern United States Flora of British Columbia Flora of the Great Lakes region (North America) Plants described in 1753 Taxa named by Carl Linnaeus Flora without expected TNC conservation status {{Primulaceae-stub