PlantaeDB Logo
Login Sign-up

Genus Stuckenia in Family Potamogetonaceae

In botanical taxonomy, a genus (plural genera) is a rank used to group closely related species within a family. In the hierarchy, genus sits below family and above species.

Genera are defined by shared morphological, anatomical, and genetic characteristics (for example, features of flowers, fruits, seeds, or leaves) that indicate a close evolutionary relationship among the species they contain.

Each genus can include one or more species. Examples include Rosa (roses) and Solanum (nightshades, including tomato and eggplant).

Do you wish to read more about plant taxonomy? Click here!

Genus Description

Suggest a correction!

Stuckenia Börner is a genus of submerged aquatic plants placed in the family Potamogetonaceae (APG IV, 2016). Approximately eight species are currently recognized worldwide (POWO, 2024). The genus occurs across temperate to sub‑arctic regions of the Northern Hemisphere, inhabiting freshwater lakes, ponds, and slow‑moving rivers. The type species, Stuckenia pectinata (L.) Börner, is a widely distributed Eurasian and North American pondweed.

Morphologically, Stuckenia are rhizomatous, herbaceous perennials with long, linear or narrowly lanceolate leaves that are often folded along the midrib and bear a sheathing stipule forming an ocrea; the foliage is glabrous and covered by a waxy cuticle. Inflorescences are reduced spikes or solitary flower clusters bearing small, apetalous, unisexual, greenish flowers; the perianth is reduced to a scale. The superior ovary is unilocular, containing a single ovule, and the fruit is a thin‑walled utricle or achene, typically bearing a persistent beak. Seeds lack endosperm and possess a small embryo.

Species richness is highest in boreal and sub‑arctic zones of North America and Eurasia; several taxa, such as Stuckenia alaskana, are regional endemics. Plants occupy shallow, nutrient‑rich waters from lowland to alpine elevations, preferring slightly acidic to neutral pH, and are often found at lake margins or in slow‑flowing streams.

Stuckenia is wind‑ and water‑pollinated (hydrophilous), with pollen released into the water column and captured by the receptive stigma. Fruits disperse by water currents and can remain viable for months. Cytological surveys consistently report a base chromosome number of x = 13 across the family, including Stuckenia (Kaplan, 1999).

Taxonomically, Stuckenia was resurrected from Potamogeton subgenus Coleogeton and is supported as an independent lineage within Potamogetonaceae by recent molecular phylogenies (Les et al., 2010). Some authors continue to treat Stuckenia within Potamogeton (Haynes & Willis, 2009), highlighting ongoing taxonomic debate. Infrageneric classification remains unresolved; no widely accepted subgeneric sections have been formally defined.

Human relevance is modest: Stuckenia species are occasionally used in ornamental pond plantings for their delicate foliage, but they are not cultivated commercially. Some members, especially Stuckenia pectinata, are considered weedy in managed water bodies, though they seldom become invasive.

Threats include habitat loss from eutrophication, water‑level fluctuations, and climate change, particularly for alpine populations. Continued taxonomic clarity, ecological monitoring, and life‑history research are essential to inform conservation strategies for this aquatic lineage.

Pick a Species to see its components: