Flora of the Canadian Arctic Archipelago

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S.G. Aiken, M.J. Dallwitz, L.L. Consaul, C.L. McJannet, R.L. Boles, G.W. Argus, J.M. Gillett, P.J. Scott, R. Elven, M.C. LeBlanc, L.J. Gillespie, A.K. Brysting, H. Solstad, and J.G. Harris

Calamagrostis chordorrhiza A.E. Porsild

Poaceae, Grass family.

Published in Sargentia 4: 9. 1943.

Vegetative morphology. Plants herbs. Leaves marcescent. Petioles absent. Sheaths present; sheath collars present. Ligules present. Leaves grass-like. Blades straight, linear. Blade margins flat, blades not lobed. Hydathodes absent.

Reproductive morphology. Flowering stems with leaves. Two glumes present. Flowers bilaterally symmetrical (zygomorphic). Stamens 3. Styles 2. Placentation basal. Ovules per ovary 1. Fruit a caryopsis.

General notes. A record from the Arctic Archipelago in Porsild (1964) suggests that this taxon was collected at Mould Bay, Prince Patrick Island. A possible voucher for this record is at DAO and was annotated as C. stricta by C.W. Greene in 1980. A specimen collected by S.D. MacDonald, 5, 22 July 1952, was initially identified as C. chordorrhiza by A.E. Porsild and annotated by him as C. holmii Lange in 1973. In May, 2005, this specimens was examined by Elven in Oslo and annotated as C. neglecta.

The type specimen of C. chordorrhiza, collected from the Mackenzie River Delta, 68°40'N, hill back of Reindeer Station, was examined by C.W. Greene, College of Atlantic, Maine, in 1987 and annotated as C. stricta (Timm) Koeler approaching subsp. inexpansa (Gray) C.W. Greene. The specimen from Mould Bay is at an earlier stage of flowering with pre-anthesis anthers.


This publication is available on the internet (posted May 2011) and on CD-ROM (published in 2007). These versions are identical in content, except that the errata page for CD-ROM is accessible on the main index page of the web version.

Recommended citation for the web-based version of this publication: Aiken, S.G., Dallwitz, M.J., Consaul, L.L., McJannet, C.L., Boles, R.L., Argus, G.W., Gillett, J.M., Scott, P.J., Elven, R., LeBlanc, M.C., Gillespie, L.J., Brysting, A.K., Solstad, H., and Harris, J.G. 2007. Flora of the Canadian Arctic Archipelago: Descriptions, Illustrations, Identification, and Information Retrieval. NRC Research Press, National Research Council of Canada, Ottawa. http://nature.ca/aaflora/data, accessed on DATE.

Recommended citation for the CD-ROM version of this publication: Aiken, S.G., Dallwitz, M.J., Consaul, L.L., McJannet, C.L., Boles, R.L., Argus, G.W., Gillett, J.M., Scott, P.J., Elven, R., LeBlanc, M.C., Gillespie, L.J., Brysting, A.K., Solstad, H., and Harris, J.G. 2007. Flora of the Canadian Arctic Archipelago: Descriptions, Illustrations, Identification, and Information Retrieval. [CD-ROM] NRC Research Press, National Research Council of Canada, Ottawa.

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