''Lysimachia'' × ''producta'' is a

hybrid Hybrid may refer to: Science * Hybrid (biology), an offspring resulting from cross-breeding ** Hybrid grape, grape varieties produced by cross-breeding two ''Vitis'' species ** Hybridity, the property of a hybrid plant which is a union of two dif ...

of flowering plants in the primrose family Primulaceae. It is native to eastern

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

, from Quebec south to North Carolina, as far west as Wisconsin. The hybrid

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

''producta'' means "stretched out, extended", a reference to the shape of its inflorescence. Indeed, the hybrid is sometimes referred to as the elongated loosestrife.

Description

''Lysimachia'' × ''producta'' has erect stems long. The

leaves A leaf (plural, : leaves) is any of the principal appendages of a vascular plant plant stem, stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", wh ...

are whorled or opposite, each long and wide, with smooth surfaces. The inflorescence is a (sometimes leafy) terminal

raceme A raceme ( or ) or racemoid is an unbranched, 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 produced as the s ...

, long. The

pedicels In botany, a pedicel is a stem that attaches a single flower to the inflorescence. Such inflorescences are described as ''pedicellate''. Description Pedicel refers to a structure connecting a single flower to its inflorescence. In the absenc ...

are long. The flowers are

5-merous Merosity (from the greek "méros," which means "having parts") refers to the number of component parts in a distinct whorl of a plant structure. The term is most commonly used in the context of a flower where it refers to the number of sepals in a w ...

with yellow

petal Petals are modified Leaf, leaves that surround the reproductive parts of flowers. They are often advertising coloration, brightly colored or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''c ...

s, streaked with reddish or reddish-black markings. The filaments are shorter than the petals. The parents of ''Lysimachia'' × ''producta'' are '' L. quadrifolia'' and '' L. terrestris''. The flowers of the hybrid and its parents are very similar but overall ''L.'' × ''producta'' more closely resembles ''L. terrestris'' since both have terminal racemes. The two may be distinguished by the length of the raceme, the length of the pedicels, and whorled (as opposed to opposite) leaves.

References

External links

* producta Plants described in 1899 Taxa named by Asa Gray Taxa named by Merritt Lyndon Fernald Plant nothospecies {{Primulaceae-stub