MANUAL OF THE GRASSES OF THE UNITED STATES 



885 



on Pleuraphis mutica Buckl. 

 Pleuraphis mutica Buckl., Acad. Nat. 

 Sci. Phila. Proc. 1862: 95. 1862. 

 Northern Texas [Wright 760-2108]. 



(5) Hilaria rigida (Thurb.) Benth. ex 

 Scribn., Torrey Bot. Club Bui. 9: 

 86. 1882. Based on Pleuraphis rigida 

 Thurb. 



Pleuraphis rigida Thurb. in S. Wats., Bot. 

 Calif. 2: 293. 1880. California, Fort 

 Mojave and Providence Mountains, 

 Cooper [2230, the type]; Fort Yuma, 

 Thomas; Colorado Desert, Schott. 

 (2) Hilaria swalleni Cory, Wrightia 1: 215. 

 1948. Musquiz Canyon, Texas, July 28, 

 1938. Sperry T778, type. 



(64) HOLCUS L. 



(1) Holcus lanatus L., Sp. PI. 1048. 1753. 

 Europe. 



Aira holcus-lanata Vill., Hist. PI. Dauph. 



2 : 87. 1787. Based on Holcus lanatus L. 

 Avena pallida Salisb., Prodr. Stirp. 24. 



1796. Not A. pallida Thunb., 1794. 



Based on Holcus lanatus L. 

 Avena lanata Koel., Descr. Gram. 300. 



1802. Based on Holcus lanatus L. 



Same published by Cav., Descr. PL 308. 



1802. 

 Ginannia pubescens Bubani, Fl. Pyr. 4: 



321. 1901. Based on Holcus lanatus L. 

 Notholcus lanatus Nash ex Hitchc, in 



Jepson, Fl. Calif. 1 : 126. 1912. Based 



on Holcus lanatus L. 

 Nothoholcus lanatus Nash in Britt. and 



Brown, Illustr. Fl. ed. 2. 1: 214. 1913. 



Based on Holcus lanatus L. 

 Ginannia lanata Hubb., Rhodora 18: 234. 



1916. Based on Holcus lanatus L. 



(2) Holcus mollis L. Syst., Nat. ed. 10. 2: 



1305. 1759. Europe. 

 Aira mollis Schreb., Spic. Fl. Lips. 51. 



1771. Based on Holcus mollis L. 

 Aira holcus-mollis Vill., Hist. PI. Dauph. 



2: 88. 1787. Based on Holcus mollis L. 

 A vena sylvatica Salisb., Prodr. Stirp. 24. 



1796. Based on Holcus mollis L. 

 Avena mollis Koel., Descr. Gram. 300. 



1802. Not A. mollis Salisb., 1796. 



Based on Holcus mollis L. 

 Ginannia mollis Bubani, Fl. Pyr. 4: 321. 



1901. Based on Holcus mollis L. 

 Notholcus mollis Hitchc, Amer. Jour. Bot. 



2: 304. 1915. Based on Holcus mollis L. 



(49) HORDEUM L. 



(6) Hordeum arizonicum Covas, Madrono 



10: 16. 1949. Fort Lowell, Arizona, 

 J. /. Thornber 536. Referred to H. 

 adscendens H. B. K. in Manual ed. 1. 



(3) Hordeum brachyantherum Nevski, Acta 



Inst. Bot. Acad. Sci. U. R. S. S. I. 2: 

 61. 1936. Based on H. boreale Scribn. 

 and Smith. Not H. boreale Gandog., 

 1881. 

 Hordeum boreale Scribn. and Smith, U. S. 



Dept. Agr., Div. Agrost. Bui. 4: 24. 

 1897. Aleutian Islands [type, Atka 

 Island, Turner 1193] and Alaska to 

 California. 

 Hordeum nodosum var. boreale Hitchc, 

 Amer. Jour. Bot. 21: 134. 1934. Based 

 on H. boreale Scribn. and Smith. 

 This is the species to which the name 

 H. nodosum L. has generally been mis- 

 applied in this country. 

 (4) Hordeum californicum Covas and Steb- 

 bins, Madrono 10: 5. 1949. Hastings 

 Reservation, Jamesburg, Monterey 

 County, Calif. Stebbins 3944. 



(7) Hordeum depressum (Scribn. and 

 Smith) Rydb., Torrey Bot. Club Bui. 

 36: 539. 1909. Based on H. nodosum 

 var. depressum Scribn. and Smith. 



Hordeum nodosum var. depressum Scribn. 

 and Smith, U. S. Dept. Agr., Div. 

 Agrost. Bui. 4: 24. 1897. Type, Lexing- 

 ton, Oreg.. Leiberg 39. 



Hordeum distichon L., Sp. PI. 85. 1753. 

 Cultivated. 



Hordeum hexastichon L., Sp. PI. 85. 

 1753. Cultivated. 



(8) Hordeum hystrix Roth, Cat. Bot. 1: 

 23. 1797. Spain. 



Hordeum gussonianum Pari., Fl. Palerm. 



1 : 246. 1845. Italy. 

 Hordeum maritimum var. gussonianum 



Richt., PI. Eur. 1: 131. 1890. Based on 



H. gussonianum Pari. 

 Hordeum marinum var. gussonianum 



Thell., Vierteljahrs. Nat. Ges. Zurich 



52: 441. 1908. Based on H. gussoni- 

 anum Pari. 

 (2) Hordeum jubatumL.,Sp. PI. 85. 1753. 



Canada, Kabn. 

 ICritesion geniculatum Raf., Jour. Phys. 



Chym. 89: 103. 1819. Illinois. 

 ? Elymus jubatus Link, Hort. Berol. 1: 19. 



1827. Garden specimen, Hordeum ju- 



batum L., doubtfully cited as synonym. 

 Critesion jubatum Nevski in Komorov, Fl. 



U. R. S. S. 2: 721. 1934. Based on 



Hordeum jubatum L. 

 Hordeum jubatum var. caespitosum 



(Scribn.) Hitchc, Biol. Soc Wash. 



Proc. 41: 160. 1928. Based on H. 



caespitosum Scribn. (Published as H. 



jubatum caespitosum.) 

 Hordeum caespitosum Scribn., Davenport 



Acad. Sci. Proc. 7: 245. 1899. Edge- 



mont, S. Dak., Pammel 143; Geranium 



Park, Wyo., Pammel 157 type. 



(9) Hordeum leporimim Link, Linnaea 9: 



133. 1835. Greece. 



Hordeum murinum var. leporinum Arc- 

 ang. Comp. Fl. Ital. 805. 1882. Based 

 on H. leporinum Link. This and H. 

 stebbinsii have been referred to Hor- 

 deum murinum L. by American authors. 

 Hordeum marinum Huds., Fl. Angl. ed. 2. 

 57. 1778. England. 



Hordeum maritimum With., Bot. Arr. 

 Veg. Brit. ed. 2. 1: 127. 1787. Based 



