MANUAL OF THE GRASSES OF THE UNITED STATES 819 



(16) Calamagrostis canadensis (Michx.) Beauv., Ess. Agrost. 15, 152, 157. 1812. 



Based on Arundo canadensis Michx. 



Arundo canadensis Michx., Fl. Bor. Amer. 1: 73. 1803. Canada, Michaux. 

 Arundo agrostoides Pursh, Fl. Amer. Sept. 1: 86. 1814. New Jersey and 



Pennsylvania. 

 Calamagrostis mexicana Nutt., Gen. PI. 1: 46. 1818. North America. 



"Agrostis mexicana? Persoon, Arundo agrostoides Pursh" are cited. Agros- 



tis mexicana L., in Persoon's work is Muhlenbergia mexicana, but Nuttall's 



description agrees with Pursh's. 

 Calamagrostis agrostoides Pursh; Spreng., Syst. Veg. 1: 252. 1825. Presumably 



based on Arundo agrostoides Pursh. 

 Cinna purshii Kunth, Rev. Gram. 1: 67. 1829. Based on Arundo agrostoides 



Pursh. 

 Arundo fissa Willd.; Steud., Nom. Bot. ed. 2. 1: 144. 1840, as synonym of 



Calamagrostis michauxii Trin. 

 Calamagrostis michauxii Trin.; Steud., Nom. Bot. ed. 2. 1: 250. 1840. 



Based on Arundo canadensis Michx. 



Deyeuxia canadensis Munro; Hook, f., Linn. Soc. Trans. 23: 345. 1861. Pre- 

 sumably based on Arundo canadensis Michx., indirect citations given. See 



also, Vasey, Grasses U.S. 28. 1883; Agr. Grasses U.S. 69. pi. 59. 1884; 



Cassidy, Colo. Agr. Expt. Sta. Bull. 12: 48, with plate. 1890. 

 Calamagrostis oregonensis BuckL, Acad. Nat. Sci. Phila. Proc. 1862: 92. 1863. 



Columbia River, Nuttall. 

 Calamagrostis columbiensis Nutt.; A. Gray, Acad. Nat. Sci. Phila. Proc. 1862: 



334. 1863. Name only [Columbia River, Nuttall]. 

 Calamagrostis canadensis var. robusta Vasey, in Wheeler, Rept. U.S. Survey 100th 



Merid. 6: 285. 1878. Twin Lakes, Colo., Expl. 100th Merid. [Wolf] 1093. 

 Calamagrostis pallida Vasey and Scribn.; Vasey, Contrib. U.S. Natl. Herb. 3: 



79. 1892. Not C. pallida C. Muell., 1861. Washington, Suksdorf in 1883. 

 Calamagrostis blanda Beal, Grasses N.Amer. 2: 349. 1896. Based on C. pallida 



Vasey and Scribn. 

 Calamagrostis canadensis acuminata Vasey; Shear and Rydb., U.S.Dept.Agr., 



Div. Agrost. Bull. 5: 26. 1897. Georgetown, Colo., Shear 615 [type]; 



Montana, Idaho. 

 Calamagrostis canadensis campestris Kearney, U.S.Dept.Agr., Div. Agrost. Bull. 



11: 31. 1898. Louis Plain, Assiniboia, Macoun 56. 

 Calamagrostis alaskana Kearney, U.S.Dept.Agr., Div. Agrost. Bull. 11: 32. 



1898. Yukon River, Alaska, Funston 157. 



Calamagrostis atropurpurea Nas^ Bull. N.Y. Bot. Gard. 2: 153. 1901. Daw- 

 son, Yukon Territory, R. S. Williams in 1899. 

 Calamagrostis anomala Suksdorf, Allg. Bot. Ztschr. 12: 43. 1906. Mount 



Paddo [Adams], Wash., Suksdorf 2824. 

 Calamagrostis langsdorfi var. acuminata Litw., Trav. Mus. Bot. Acad. Sci. 



Petrograd 18: 52. 1920. Based on C. canadensis var. acuminata Vasey. 

 Calamagrostis canadensis var. pallida Stebbins, Rhodora 32: 45. 1930. Based 



on C. pallida Vasey and Scribn. 

 Calamagrostis scribneri var. imberbis Stebbins, Rhodora 32: 46. 1930. Based 



on C. anomala Suksdorf "not Steud., in Lechl., Berb. Am. Aust. 56. (1857)," 



a name only. 

 CALAMAGROSTIS CANADENSIS var. MACOUNIANA Stebbins, Rhodora 32: 41. 1930. 



Based on Deyeuxia macouniana Vasey. 

 Deyeuxia macouniana Vasey, Bot. Gaz. 10: 297. 1885. Northwest Territory, 



Macoun. 

 Calamagrostis macouniana Vasey, Contrib. U.S. Natl. Herb. 3: 81. 1892. 



Based on Deyeuxia macouniana Vasey. 

 CALAMAGROSTIS CANADENSIS var. SCABRA (Presl) Hitchc., Amer. Jour. Bot. 21: 



135. 1934. Based on C. scabra Presl. 

 Calamagrostis scabra Presl, Rel. Haenk. 1: 234. 1830. Nootka Sound, 



Vancouver Island, Haenke. 



Deyeuxia preslii Kunth, Rev. Gram. 1: Sup. XX. 1830. Based on Calama- 

 grostis scabra Presl. 



This variety has been referred to Calamagrostis langsdorfi (Link) Trin. by 

 many American authors. A fragment of the type of Arundo langsdorfi Link, sent 

 by Dr. Pilger from the Berlin Herbarium, shows that it is not an American spe- 

 cies. The rachilla is very minute or wanting, the spikelets are smaller than in C. 

 scabra, the glumes are thinner, showing the nerves distinctly, and the blades are 



