Calamagrostis

Belongs within: Pooideae.

Calamagrostis is a genus of grasses found in cool temperate regions, bearing spikelets containing single florets with a hairy callus (Hickman 1993).

Characters (Hickman 1993): Perennial, generally from rhizomes. Stems 1–15 dm, generally not branched, more or less smooth; nodes generally 2–4. Leaves generally basal and cauline; sheath smooth or scabrous; ligule membranous; blade flat to inrolled. Inflorescence panicle-like, open to dense; branches more or less drooping to appressed; spikelets ascending to appressed. Spikelet with glumes subequal, generally lanceolate, acute to acuminate, lower generally one-veined, upper three-veined; floret 1, breaking above glumes; axis prolonged beyond floret, hairy; callus hairy; lemma shorter than glumes, awned from below middle to near base, tip generally four-toothed, veins 3–5, awn straight to twisted, bent; palea more or less equal to lemma, thin.

<==Calamagrostis
    |--C. billaridieriA27
    |--C. bolanderiH93
    |--C. breweriH93
    |--C. canadensis [incl. C. lactea]H93
    |--C. effusaR96
    |--C. epigeiosV72
    |--C. erythrostachya (Desv.) Hackel in Stuckert 1906 [=Deyeuxia erythrostachya]S06
    |--C. foliosaH93
    |--C. hieronymi Hackel 1902S06
    |--C. koelerioides [incl. C. densa]H93
    |--C. lacustrisV72
    |--C. mcvaughei Sohns 1957S57
    |--C. montevidensisS06
    |    |--C. m. var. montevidensisS06
    |    `--C. m. var. subcontractaS06
    |--C. nardifolia (Gris.) Hackel in Stuckert 1906 [=Agrostis nardifolia]S06
    |--C. nutkaensisH93
    |--C. ophiditisH93
    |--C. pickeringiiV72
    |--C. pseudophragmitesO88
    |--C. purpurascensH93
    |--C. rectaR96
    |--C. roseaS06
    |    |  i. s.: C. r. f. arista-altius-inserta Hackel in Stuckert 1906S06
    |    |         C. r. f. spiculis-pallidis Hackel in Stuckert 1906S06
    |    |--C. r. var. roseaS06
    |    `--C. r. var. viridula Hackel in Stuckert 1906S06
    |--C. rubescensH93
    |--C. setifoliaA27
    |--C. spicigeraS06
    |--C. spruceanaS06
    |--C. stricta [incl. C. neglecta]V72
    |    |  i. s.: C. ‘inexpansa’ var. breviorV72
    |    |--C. s. ssp. strictaH93
    |    `--C. s. ssp. inexpansa [incl. C. crassiglumis]H93
    |--C. tolucensisS57
    `--C. valida Sohns 1957S57

*Type species of generic name indicated

References

[A27] Andersen, J. C. 1927. Popular names of New Zealand plants. Part 2. Transactions and Proceedings of the New Zealand Institute 57: 905–977.

[H93] Hickman, J. C. (ed.) 1993. The Jepson Manual: Higher Plants of California. University of California Press: Berkeley (California).

[O88] Ohba, H. 1988. The alpine flora of the Nepal Himalayas: an introductory note. In: Ohba, H., & S. B. Malla (eds) The Himalayan Plants vol. 1. The University Museum, University of Tokyo, Bulletin 31: 19–46.

[R96] Righi, G. 1996. Colombian earthworms. Studies on Tropical Andean Ecosystems 4: 485–607.

[S57] Sohns, E. R. 1957. New grasses from Mexico. Journal of the Washington Academy of Sciences 46 (12): 376–388.

[S06] Stuckert, T. 1906. Segunda contribución al conocimiento de las gramináceas Argentinas. Anales del Museo Nacional de Buenos Aires, serie 3, 6: 409–555.

[V72] Voss, E. G. 1972. Michigan Flora. Part I. Gymnosperms and Monocots. Cranbrook Institute of Science and University of Michigan Herbarium.