Calamagrostis canadensis
species of plant
Calamagrostis canadensis is a species of grass, having three or more varieties, in the family Poaceae. It is known variously by the common names of bluejoint, bluejoint reedgrass, marsh reedgrass, Canadian reedgrass, meadow pinegrass, Canada bluejoint and marsh pinegrass.
Varieties
Calamagrostis canadensis takes the form of at least three varieties, including the type. The U.S. Forest Service names others.
The type variety (and autonym), is C. c. var. canadensis. This is the name for C. canadensis after varieties of it were named and is used only to differentiate it from the other, newer varieties. The common name is bluejoint
C. c. var.
Begin with the source’s own compact description: “Calamagrostis canadensis” is species of plant. The dossier treats that line as a proposition to test through Calamagrostis, canadensis and species, not as a finished interpretation.
Why this record matters
The phrase “species of plant” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Dec 25, 2025. The linked authority identifier is Q5018360. The Library of Congress control number is sh2009008854. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank.
Scientific names, classifications and consensus can change while older terminology persists in catalogues and historical literature. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
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This entry incorporates text from “Calamagrostis canadensis” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.