Calamagrostis stricta ssp. stricta
Narrow-leaved reedgrass
Image of Calamagrostis stricta ssp. stricta

Photo by Ryan P. O'Connor 

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Key Characteristics

Tall perennial grass (up to 100 cm) of wet meadows and fens; leaves narrow, involute, smooth; upper ligules very short (less than 3 mm long); inflorescence tightly contracted.

Status and Rank

  • State Status: T
  • State Rank: S1
  • Global Rank: G5T5


County NameNumber of OccurrencesYear Last Observed
St. Joseph11986
Distribution map for Calamagrostis stricta ssp. stricta

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.


Northern Michigan collections have come from the rocky shoreline of Lake Superior (on conglomerate bedrock). In southern Michigan it is known from streams and marshes, prairie fens, and a stream mudflat.

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

Few collection data; on a stream mudflat with hairgrass (Deschampsia cespitosa) and bladderwort; also along a stream bordered by willow, poison sumac, and tamarack.


The status of this species is poorly known in Michigan, and detailed inventory is necessary. Currently, the primary management need is the conservation of wetlands supporting this species.

General Survey Guidelines

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

Survey Methods

Page Citation

Michigan Natural Features Inventory. 2007. Rare Species Explorer (Web Application). Available online at [Accessed Aug 18, 2018]


Survey References

Technical References

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