''Lathyrus pratensis'' or meadow vetchling,
yellow pea, meadow pea and meadow pea-vine, is a perennial
legume that grows to 1.2 m in height.
The hermaphrodite
flower
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechani ...
s are
pollinated
Pollination is the transfer of pollen from an anther of a plant to the stigma of a plant, later enabling fertilisation and the production of seeds, most often by an animal or by wind. Pollinating agents can be animals such as insects, birds, a ...
by
bees. As a
perennial
A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wid ...
, this plant reproduces itself over many years, spreading out from the point it was introduced, especially in damp grassy areas. This plant has been propagated in the past as animal fodder.
''Lathyrus pratensis'' is also a host plant for ovipositioning of the wood white butterfly (''
Leptidea sinapis
''Leptidea sinapis,'' or the wood white butterfly of the family Pieridae, is a small white butterfly that is mainly found in England, Ireland, and Northern Europe. The butterfly has white wings with grey or yellow markings near the center or tip ...
'').
Description
Meadow vetchling is a perennial plant with a limp, unwinged stem that grows to and is erect and hairy. The leaves are alternate with short stalks and large
stipule
In botany, a stipule is an outgrowth typically borne on both sides (sometimes on just one side) of the base of a leafstalk (the petiole). Stipules are considered part of the anatomy of the leaf of a typical flowering plant, although in many speci ...
s. The leaf blades are pinnate with a single pair of broad lanceolate leaflets with blunt tips, entire margins and a terminal unbranched tendril. The
inflorescence
An inflorescence is a group or cluster of flowers arranged on a Plant stem, stem that is composed of a main branch or a complicated arrangement of branches. Morphology (biology), Morphologically, it is the modified part of the shoot of sperma ...
has a long stem and a cluster of five to twelve yellow flowers, each long. These have five sepals and five petals and are irregular. The uppermost petal is known as the "standard", the lateral two as the "wings" and the lowest two are joined to form the "keel". There are ten stamens and a single carpel. The fruit is a long black pod. This plant flowers from June to August.
Distribution and habitat
Meadow vetchling is native to Europe and Asia, but has been introduced to other parts of the world.
In the United States, this plant is found primarily in the northwestern states of Oregon and Alaska. Its typical habitat is rough grassy places, broad-leaved woodland, forest margins, hedgerows and banks where it uses its tendrils to clamber over other vegetation.
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References
External links
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Plants For A Future: ''Lathyrus pratensis''
{{Taxonbar, from=Q161639
pratensis
Flora of Europe
Flora of Serbia
Plants described in 1753
Taxa named by Carl Linnaeus