MANUAL OF THE GRASSES OF THE UNITED STATES 839 



Distichlis spicata var. laxa Vasey; Beal, Grasses N.Amer. 2: 519. 1896. 



Lake Park, Utah, Tracy in 1887. 

 (4) Distichlis texana (Vasey) Scribn., U.S.Dept.Agr., Div. Agrost. Circ. 16: 2. 



1899. Based on Poa texana Vasey. 

 Poa texana Vasey, Contrib. U.S. Natl. Herb. 1: 60. 1890. Region of Rio 



Grande, Tex., Nealley. 

 Sieglingia wrightii Vasey, Contrib. U.S. Natl. Herb. 1: 269. 1893. Valley 



of the Limpio, Tex., Wright 2038. 



(133) ECHINOCHLOA Beauv. 20 



(1) Echinochloa colonum (L.) Link, Hort. Berol. 2: 209. 1833. Based on 

 Panicum colonum L. 



Panicum colonum L., Syst. Nat. ed. 10. 2: 870. 1759. Jamaica, Browne. 

 Miliumco lonum Moench, Meth. PL 202. 1794. Based on Panicum colonum L. 

 Oplismenus colonum H.B.K., Nov. Gen. and Sp. 1: 108. 1815. Based on 



Panicum colonum L. 

 Panicum zonale Guss., Fl. Sic. Prodr. 1: 62. 1827. Sicily. 

 Oplismenus repens Presl, Rel. Haenk. 1: 321. 1830. Mexico, Haenke. 

 Oplismenus colonum var. zonalis Schrad. Linnaea 12: 429. 1838. Based on 



Panicum zonale Guss. 

 Panicum incertum Bosc; Steud., Nom. Bot. ed. 2. 2: 258. 1841. Name 



only. Carolina. 

 Echinochloa zonalis Pari., Fl. Panorm. 1: 119. 1845. Based on Panicum 



zonale Guss. 

 Panicum prorepens Steud., Syn. PL Glum. 1: 46. 1854. Based on Oplismenus 



repens Presl. 

 Oplismenus crusgalli var. colonum Coss. and Dur., Expl. Sci. Alger. 2: 28. 1854. 



Based on Panicum colonum L. 

 Panicum crusgalli var. colonum Coss.; Richt., PL Eur. 1: 26. 1890. Based on 



P. colonum L. 

 Panicum colonum var. zonale L. H. Dewey, Contrib. U.S. Natl. Herb. 2: 502. 



1894. Based on P. zonale Guss. 

 Echinochloa colonum var. zonalis Woot. and Standi., N.Mex. Coll. Agr. Bull. 81: 



45. 1912. Based on Panicum zonale Guss. 

 Echinochloa crusgalli subsp. colonum Honda, Bot. Mag. Tokyo 37: 122. 1923. 



Based on Panicum colonum L. 

 Panicum crusgalli subsp. colonum Makino and Nemoto, Fl. Jap. 1470. 1925. 



Based on P. colonum L. 



(2) Echinochloa crusgalli (L.) Beauv., Ess. Agrost. 53, 161. 1812. Based on 

 Panicum crusgalli L. 



Panicum crusgalli L., Sp. PL 56. 1753. Europe; Virginia. 



Milium crusgalli Moench, Meth. PL 202. 1794. Based on Panicum crusgalli L. 



Panicum grossum Salisb., Prod. Stirp. 18. 1796. Based on P. crusgalli L. 



Panicum muricatum Michx., Fl. Bor. Amer. 1: 47. 1803. Not P. muricatum 

 Retz., 1786. Canada, Lake Champlain [type] and Lake Ontario, Michaux. 



IPanicum echinatum WilkL, Enum. PL 1032. 1809. "America meridionali. " 

 Wiegand 21 takes up this name for Echinochloa crus-pavonis. The specimen 

 in the Willdenow Herbarium named P. echinatum (Magdalena, Colombia, 

 Humboldt) is Pseudechinolaena polystachya (H.B.K.) Stapf. The brief 

 description does not apply to the specimen so named nor to E. crus-pavonis. 

 Willdenow differentiates the species from P. crusgalli (with "glumis aristatis 

 hispidis") by "glumis aristatus muricato-echinatus", whereas in E. crus-pa- 

 vonis the glumes are less strongly hispid than in E. crsugalli. 



Setaria muricata Beauv., Ess. Agrost. 51, 170, 178. 1812. Based on Panicum 

 muricatum Michx. 



? Echinochloa echinata Beauv., Ess. Agrost. 53, 161, 169. 1812. Based on 

 Panicum echinatum Willd. 



Panicum crusgalli var. aristatum Pursh, Fl. Amer. Sept. 66. 1814. North 

 America. 



Panicum pungens Poir., in Lam., Encycl. Sup. 4: 273. 1816. Based on P. 

 muricatum Michx. 



Pennisetum crusgalli Bailing., Enum. Stirp. Transsilv. 3: 277. 1816. Based 

 on Panicum crusgalli L. 



Echinochloa crusgalli var. aristata S. F. Gray, Nat. Arr. Brit. PL 2: 158. 1S21. 

 Great Britain. 



*° For discussion of types see Hitchc., Contrib. U.S. Natl. Herb. 22: I38r-153. 1920. 

 2i Rhodora 23: 60. 1921. 



