''Potamogeton nodosus'' is a species of
aquatic plant
Aquatic plants, also referred to as hydrophytes, are vascular plants and Non-vascular plant, non-vascular plants that have adapted to live in aquatic ecosystem, aquatic environments (marine ecosystem, saltwater or freshwater ecosystem, freshwater ...
known by the common names longleaf pondweed and Loddon pondweed.
It is native to Eurasia and the Americas, where it is widespread and can be found in water bodies such as ponds, lakes, ditches, and streams. This is a perennial herb producing a thin, branching stem easily exceeding a meter in maximum length. The submerged leaves are linear to widely lance-shaped and up to in length and width, respectively, while the floating leaves achieve shorter maximum lengths and are ovate or elliptic.
Both floating leaves and submerged leaves are borne on long
petioles, a distinguishing characteristic. The
inflorescence
In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the arrangement of flowers on a mai ...
is a spike of many small flowers arising from the water on a
peduncle.
References
External links
Jepson Manual TreatmentFlora of North AmericaPhoto gallery
nodosus
Flora of Northern America
Flora of Southern America
Flora of Europe
Flora of temperate Asia
Flora of tropical Asia
Plants described in 1816
Freshwater plants
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