The open plant encyclopedia
Snap a photo or search by any name to see how to care for it, where it comes from, whether it's safe, and a 3D model you can turn.
The plants people record most in your country, and ones that grow there wild.
Filter by what you want to do, shape, origin, country, care and safety.
Micranthemum micranthemoides
Also called Pearl weed, Nuttall's Micranthemum, Pearlweed
Nuttall's mudflower (Micranthemum micranthemoides) is a small, creeping aquatic annual that was native to tidal mudflats and river estuaries from Virginia to New York, and is now considered extinct; it was last recorded in 1941. Plants sold as this name in the aquarium trade are usually Micranthemum glomeratum instead.
Micranthemum micranthemoides (syn. Hemianthus micranthemoides), commonly known as Nuttall's mudflower is an extinct species of subaquatic Micranthemum that previously inhabited wet areas from Virginia to New York. In the aquascaping trade, Micranthemum glomeratum is commonly misidentified as this plant.
Micranthemum micranthemoides previously occurred in the Mid-Atlantic region of the United States. It grew in wet areas from Virginia to New York. Before its extinction, it was a rare occurrence in tidal mudflats and in the intertidal zone of river estuaries. It is said to have been highly specialized to these habitats. Micranthemum micranthemoides grew in sandy and gravelly substrates. It was last seen on 13 September 1941 by Fernald & Long. It was found growing in the intertidal portions of the Delaware, Pocomoke, Wicomico, Potomac, Anacostia, Chickahominy, and Hudson rivers. It is restricted to freshwater estuarine shores due indicating an intolerance to salinity.
Text excerpted from the Wikipedia article Micranthemum micranthemoides by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.
The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
