''Stuckenia vaginata'' (

syn. The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently. * In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linna ...

''Potamogeton vaginatus''), commonly called sheathed pondweed, big sheathed pondweed or large-sheathed pondweed is a water plant species that grows in fresh and brackish water in Europe, Northern Asia (excluding China) and North America. Sheathed pondweed is rare, but is not in the 2012

IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol ...

. ''Stuckenia vaginata'' is a fully submerged

aquatic plant Aquatic plants are plants that have adapted to living in aquatic environments ( saltwater or freshwater). They are also referred to as hydrophytes or macrophytes to distinguish them from algae and other microphytes. A macrophyte is a plant that ...

and does not have any floating or emerged leaves. The flowers are wind

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, ...

and the seeds float.

Tuber Tubers are a type of enlarged structure used as storage organs for nutrients in some plants. They are used for the plant's perennation (survival of the winter or dry months), to provide energy and nutrients for regrowth during the next growin ...

s that are rich in starch are formed on the rhizomes.

Reproduction Reproduction (or procreation or breeding) is the biological process by which new individual organisms – " offspring" – are produced from their "parent" or parents. Reproduction is a fundamental feature of all known life; each individual o ...

can either be

vegetative Vegetative describes vegetation. Vegetative may also refer to: *Vegetative reproduction Vegetative reproduction (also known as vegetative propagation, vegetative multiplication or cloning) is any form of asexual reproduction occurring in ...

with tubers and plant fragments or sexual with seeds.

Description

Image:Stuckenia vaginata.jpg The main difference between ''Stuckenia'' and ''Potamogeton'' is that the

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 ...

joins the leaf base; when it is pulled the sheath and stipule comes away, similar to a grass sheath and

ligule A ligule (from "strap", variant of ''lingula'', from ''lingua'' "tongue") is a thin outgrowth at the junction of leaf and leafstalk of many Poaceae, grasses (Poaceae) and Cyperaceae, sedges. A ligule is also a strap-shaped extension of the corolla ...

. ''Stuckenia vaginata'' is 1–4 metres long and has longer

sheaths than e.g. '' Stuckenia pecinata'' and '' Stuckenia filiformis''. Similar to them, it has long narrow linear leaves.

References

External links

Global Biodiversity Information Facility entryEOL entryWildflower entryWisconsin DNR entry
Potamogetonaceae Flora of Asia Flora of North America Flora of Europe Aquatic plants {{monocot-stub