Nuphar microphylla
Small yellow pond lily
Image of Nuphar microphylla

Photo by Helen Kuhn 

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Key Characteristics

Perennial aquatic of softwater lakes and marshes in the Upper Peninsula; leaves floating, ovate, small (8-10 cm long), venation pinnate; flowers green to yellow.

Status and Rank

  • State Status: E
  • State Rank: S1S2
  • Global Rank: G5T4T5


County NameNumber of OccurrencesYear Last Observed
Distribution map for Nuphar microphylla

Updated 5/15/2018. Information is summarized from MNFI's database of rare species and community occurrences. Data may not reflect true distribution since much of the state has not been thoroughly surveyed.


Small yellow pond-lily is found in soft water lakes in Upper Michigan.

Natural Community Types


For each species, lists of natural communities were derived from review of the nearly 6,500 element occurrences in the MNFI database, in addition to herbarium label data for some taxa. In most cases, at least one specimen record exists for each listed natural community. For certain taxa, especially poorly collected or extirpated species of prairie and savanna habitats, natural community lists were derived from inferences from collection sites and habitat preferences in immediately adjacent states (particularly Indiana and Illinois). Natural communities are not listed for those species documented only from altered or ruderal habitats in Michigan, especially for taxa that occur in a variety of habitats outside of the state.

Natural communities are not listed in order of frequency of occurrence, but are rather derived from the full set of natural communities, organized by Ecological Group. In many cases, the general habitat descriptions should provide greater clarity and direction to the surveyor. In future versions of the Rare Species Explorer, we hope to incorporate natural community fidelity ranks for each taxon.

Associated Plants

Stiff water crowfoot, pondweed, duckweed, common spatterdock, spiked water-milfoil, water-marigold, chara (green alga), and water-starwort.


This species requires protection and maintenance of lake hydrology. It is likely susceptible to pollution and other threats that modify and degrade water quality.

General Survey Guidelines

Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgment of the investigator.

Survey Methods

Page Citation

Michigan Natural Features Inventory. 2007. Rare Species Explorer (Web Application). Available online at [Accessed Jul 20, 2018]


Survey References

Technical References

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