- Scientific name: Orontium aquaticum (L.)
- Species of Greatest Conservation Need (MA State Wildlife Action Plan)
- Endangered (MA Endangered Species Act)
Description
Photo Credit: Destynnie K. Berard
Photo Credit: Destynnie K. Berard
Golden club (Orontium aquaticum) is a perennial, emergent aquatic herb in the Arum (Araceae) family with long yellow-tipped and white-stemmed flowering spikes (spadices) that rise above the water surface by 152 mm (6 inches) or more. Its total height depends on the health of the individual and habitat conditions, growing anywhere from 0.3-0.9 meters (1-3 feet) from soil emergence to the tip. When injured, it produces a milky-white, opaque sap. Golden club’s whorled leaves are glabrous, elliptic (wide and tapering), and oblong, measuring 60-450 mm (2.3-17.7 inches) in length. When submerged in water, the hydrophobic leaves float; however, they are erect when the plant is exposed.
The club-shaped spadix is held erect by an elongate white scape. Bright yellow, minute flowers cover the entire spadix in a hexagonal pattern with partially embedded ovaries. The flowers are without bracts, bulblets, or spurs. Golden club has a bisexual flowering pattern, with lower female flowers having 6 scale-like sepals and the upper male flowers with 4, and as many stamens.
The inflorescence is noted to have a nearly indistinguishable sheath around the spadix that withers early in the year, immediately prior to flowering. This sheath was originally called a spathe and may be referred to as such in earlier literature; however, it has since been determined a misidentification (Ray 1988) and that the plant either does not have a spathe at all, or it has an extremely vestigial presence, unlike most members of the Arum family.
To secure itself in the soil, golden club’s roots are thick and rhizomatous (spreading) and will contract to pull the base of the plant further into the soil, protecting it from erosion and freezing. The plant itself forms basal clusters without axillary (additional) bulblets.
The fruits are a blue-green inflated berry suitable for floatation called a utricle. Without spots or stripes, the berries measure 10-20 mm (0.4-0.9 inches) and contain only one seed-bearing chamber (locule).
Life cycle and behavior
Golden club grows vegetatively above ground in mid-Spring with recognizable vegetation forming early to mid-April in Massachusetts. It begins flowering in early May, with plants in full sun flowering before those in partial shade. As flower anthesis (opening) is completed, the scape turns from its typical showy white into green. The scape then grows downward into the water, so fruits mature below the waterline before abscising (shedding) and dispersing. Fruiting begins in mid-June and may continue with ripening and dispersal until the end of August.
After the ripe fruits abscise, the scape and spadix both disintegrate. The buoyant nature of the berries comes from air-filled spaces in the pericarp and can persist floating on the surface of the water for at least a month. If the berry is damaged and the pericarp removed, the berries sink immediately (Klotz, 1992).
Little is known about the pollinators of golden club; however, researchers have noted that previous research done broadly on the Arum family suggests that the starchless quality of golden club’s pollen may be associated with pollination by bees and flies, and the large grain size of the pollen (64µm) may be associated with pollination by bees and beetles (Klotz, 1992).
Population status
Golden club is listed under the Massachusetts Endangered Species Act as Endangered. All listed species are protected from killing, collecting, possessing, or sale and from activities that would destroy habitat and thus directly, or indirectly, cause mortality and disrupt critical behaviors. There are currently 8 occurrences in the state verified since 2000, found in Barnstable, Hampden, and Berkshire counties.
Photo Credit: Grace Glynn
Note the different stages of fruit development along the spadix.
Distribution and abundance
In North America, golden club is found along the Atlantic and Gulf coastal plains, extending from Massachusetts and New York, south to Florida and the eastern portion of Texas. It does not extend west of the Appalachian Mountains.
Most southern states either do not rank golden club or rank it as Secure or Apparently Secure. It is listed as Imperiled in Kentucky and New York, Vulnerable in West Virginia and Connecticut. Due to the fact that it is at its northernmost extent in New England, it is considered Critically Imperiled in Rhode Island and Massachusetts.
Distribution in Massachusetts. 1999-2024. Based on records in the Natural Heritage Database.
Habitat
In Massachusetts, golden club is a wetland obligate that occurs exclusively in shallow waters and along the shores and margins of water bodies such as bogs, marshes, swamps, lakes, streambanks, and kettlehole ponds. It has also been noted to occur along fresh intertidal shorelines. It prefers full-sun open canopy and rich silty, muddy, or peaty substrates in herbaceous or forested wetlands.
As an emergent pondshore species, golden club can tolerate a lack of water as long as the substrate remains saturated. Occurrences with other native plants vary greatly based on the habitat, with ponds often including white water lily (Nymphaea odorata), yellow pond-lily (Nuphar variegata), water-shield (Brasenia schreberi), pondweed (Potamogeton spp.), and bladderwort (Utricularia spp.).
Healthy habitats are vital for supporting native wildlife and plants. Explore habitats and learn about conservation and restoration in Massachusetts.
Photo Credit: J. Garrett
Threats
Primary threats to golden club include changes to hydrology, herbivory by geese and deer, and shading out by overgrown overstory.
Hydrological events significantly alter the plants’ habitat. Most concerning is the raising or lowering of pond levels, diversion of water, development of wetland habitat, and eutrophication (nutrient enrichment) via road and agricultural run-off. Eutrophication negatively impacts golden club by increasing algal growth and encouraging the accumulation of organic matter in substrates, thereby raising the pH levels to an intolerable acidity. Lowering of hydrological levels has been observed to prevent flower development and therefore prevent successful seed dispersal, whereas raising hydrological levels may prevent seedling establishment.
Browsing by geese is observed as a threat most often, however, deer are also a threat to individuals along the extreme edges.
Out-shading by overstory plants is a threat to the vigor of populations, which can create a significant risk to plants already subject to other threats.
Habitat loss is another threat to golden club, as the development of wetland areas for boat launches, wharfs, and boardwalks can significantly impact populations.
Additionally, damage or uprooting of clumps during recreational activities such as kayaking and trampling may present an additional threat to specific populations.
Conservation
Survey and monitoring
Golden club is easily recognizable when flowering and fruiting, with only one plant species that is superficially similar in its appearance. Pickerelweed (Pontederia cordata) grows in similar habitat with large, long-stalked leaves, though it can be differentiated by the heart shape of its leaves and violet-blue flowers. In Massachusetts, it has been observed that pickerelweed is absent from ponds where golden club occurs and vice versa.
The best time to survey for golden club is during late May, when the flowers are most likely to be in bloom. The plant can also be identified vegetatively, with recognizable vegetation present from April to the beginning of October.
It should be noted that populations with low vigor may not produce flowering stems. Golden club forms dense, interconnected colonies and should be surveyed as clumps for larger populations. In extremely small populations where only a couple of clumps are present, ramets can also be counted.
Management
Canadian geese have been observed as a significant browsing threat to golden clubs, especially those that have only a few clumps in a population. Management of waterfowl should be performed in habitats where golden club occurs to prevent herbivory. Likewise, deer management may benefit plants on water edges and in areas that frequently dry out, providing deer better access to populations.
Because its bright yellow spadix and broad leaves are favored by many, golden club is available commercially through several catalogues and often cultivated as an aquatic garden plant. In regions where the plant is endemic, it is recommended to determine whether the plant is native or cultivated. In cultivated populations, it is important to keep the records of cultivation accurate, particularly in identification apps, to prevent misrepresentation of the number of native populations in a region.
Climate change may affect golden club populations with changes in the flood regime, subsequently altering hydrological trends, though more information is needed to assess how golden club responds to changes in habitat to accurately forecast the risk this poses to specific populations.
In populations that co-occur with tall, shrubby plants, selective cutting and removal of taller shrubbery can facilitate greater numbers of golden club, increasing both growing space and available sunlight.
All active management of rare plant populations (including invasive species removal) is subject to review under the Massachusetts Endangered Species Act and should be planned in close consultation with the Massachusetts Natural Heritage & Endangered Species Program.
Research needs
While changes in hydrology are a significant threat to golden club, little is known about how hydrological trends affect the plant. More research is needed to determine how long plants remain viable, particularly for assessing management needs in times of extended climate change-related drought and flooding.
Further research is needed to determine specific or generalist pollinators of golden club. Little is known beyond initial research for the Araceae family, suggesting that the starchless, large-grained pollen found on golden clubs make it a candidate for pollination by flies, beetles, and bees.
References
Crow, Garrett E., et al. Aquatic and Wetland Plants of Northeastern North America. Univ. of Wisconsin Press, 2000. Aquatic and Wetland Plants of Northeastern North America: A Revised and Enlarged Edition of Norman C. Fassett’s A Manual of Aquatic Plants / Garrett E. Crow and C. Barre Hellquist, Vol. 2.
GBIF.org User. “Occurrence Download, Orontium Aquaticum.” The Global Biodiversity Information Facility, 2026. DOI.org (Datacite), https://doi.org/10.15468/DL.JTD5SF. Text/tab-separated-values,application/zip.
Golden Club (Orontium Aquaticum). iNaturalist, https://www.inaturalist.org/taxa/51138-Orontium-aquaticum. Accessed 25 Mar. 2026.
Gray, Asa, and Merritt Lyndon Fernald, editors. Gray’s Manual of Botany: A Handbook of the Flowering Plants and Ferns of the Central and Northeastern United States and Adjacent Canada. 8. (centennial) ed., Corrected printing, Van Nostrand, 1970.
Klotz, Larry. On the Biology of Orontium Aquaticum L. (Araceae). Aroideana, 1992.
Magee, Dennis W., and Harry E. Ahles. Flora of the Northeast: A Manual of the Vascular Flora of New England and Adjacent New York. 2nd ed, University of Massachusetts Press, 2007.
NatureServe Explorer 2.0: Orontium Aquaticum, Goldenclub. https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.154604/Orontium_aquaticum. Accessed 25 Mar. 2026.
NORM Phenology Information. Native Plant Trust, 2014.
Orontium Aquaticum (Golden-Club): Go Botany. https://gobotany.nativeplanttrust.org/species/orontium/aquaticum/. Accessed 25 Mar. 2026.
POWO (2026). "Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:87585-1
Ray, Thomas S. “Survey of shoot organization in the Araceae.” American Journal of Botany, vol. 75, no. 1, Jan. 1988, pp. 56–84. DOI.org (Crossref), https://doi.org/10.1002/j.1537-2197.1988.tb12161.x.
Staudinger, M.D., A.V. Karmalkar, K. Terwilliger, K. Burgio, A. Lubeck, H. Higgins, T. Rice, T.L. Morelli, A. D'Amato. 2024. A regional synthesis of climate data to inform the 2025 State Wildlife Action Plans in the Northeast U.S. DOI Northeast Climate Adaptation Science Center Cooperator Report. 406 p. https://doi.org/10.21429/t352-9q86
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| Date published: | May 9, 2025 |
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| Last updated: | May 12, 2026 |