MANUAL OF THE GRASSES OF THE UNITED STATES 937 



Poa nervosa var. tracyi Beal, Grasses N.Amer. 2: 538. 1896. Based on P. 



tracyi Vasey. 

 (22) Poa trivialis L., Sp. PI. 67. 1753. Europe. 



Poa stolonifera Hall.; Muhl., Descr. Gram. 139. 1817. Pennsylvania. 



Poa trivialis var. filiculmis Scribn.; Beal, Grasses N.Amer. 2: 532. 1896. Van- 



couver Island, Macoun 282. 

 Poa callida Rydb., Bull. Torrey Bot. Club 36: 533. 1909. Helena, Mont., 



Rydberg 2145. 

 (51) Poa unilateral Scribn.; Vasey, U.S.Dept.Agr., Div. Bot. Bull. 13 2 : pi. 85. 



1893. San Francisco, Calif., [Jones 15 in 1882]. 

 Atropis unilateralis Beal, Grasses N.Amer. 2: 581. 1896. Based on Poa uni- 



lateralis Scribn. 

 Poa pachypholis Piper, Biol. Soc. Wash. Proc. 18: 146. 1905. Ilwaco, Wash., 



Piper [4900]. 

 (53) Poa vaseyochloa Scribn., U.S.Dept.Agr., Div. Agrost. Circ. 9: 1. 1899. 



Based on P. pulchella Vasey. 

 Poa pulchella Vasey, Bot. Gaz. 7: 32. 1882. Not P. pulchella Salisb., 1796. 



Columbia River [mountains, Klickitat County, Wash.], Suksdorf [in 1881]. 

 Atropis pulchella Beal, Grasses N.Amer. 2: 574. 1896. Based on Poa pulchella 



Vasey. 

 Poa gracillima var. vaseyochloa Jones, Contrib. West. Bot. 14: 14. 1912. Based 



on P. vaseyochloa Scribn. 

 (31) Poa wolfii Scribn., Bull. Torrey Bot. Club. 21: 228. 1894. [Canton], 111., 



Wolf [in 1882]. 

 Poa alsodes var. wolfii Vasey; Scribn., Bull. Torrey Bot. Club 21: 228. 1894, as 



synonym of P. wolfii Scribn. 



(70) POLYPOGON Desf. 



(4) Polypogon australis Brongn., in Duperrey, Bot. Voy. Coquille 2 2 : 21. 1830. 



Concepci6n, Chile. 

 Polypogon crinitus Trin., Gram. Unifl. 171. 1824. Not P. crinitus Nutt., 1818. 



Chile, Chamisso. 

 Polypogon interruptus var. crinitus Hack.; Stuck., An. Mus. Nac. Buenos 



Aires 13: 473. 1906. Based on P. crinitus Trin. 

 (3) Polypogon lutosus (Poir.) Hitchc., U.S.Dept.Agr., Bull. 772: 138. 1920. 



Based on Agrostis lutosa Poir. 

 Agrostis littoralis With., Bot. Arr. Veg. Brit. ed. 3. 2: 129. pi. 23. 1796. Not A. 



littoralis Lam., 1791. England. 

 Polypogon littoralis J. E. Smith, Comp. Fl. Brit. 13. 1800. Based on Agrostis 



littoralis With. 

 Agrostis lutosa Poir., in Lam., Encycl. Sup. 1: 249. 1810. Based on A. 



littoralis With. 

 Vilfa lutosa Beauv., Ess. Agrost. 16, 148, 181. 1812. Based on Agrostis lutosa 



Poir. 

 Polypogon interruptus H.B.K., Nov. Gen. and Sp. 1: 134. pi. 44. 1815. Vene- 



zuela, Humboldt and Bonpland. 

 Alopecurus interruptus Poir., in Lam., Encycl. Sup. 5: 495. 1817. Based on 



Polypogon interruptus H.B.K. 



Polypogon lutosus was thought by Duval-Jouve to be a hybrid between P. 



spelien 

 (2) Polypogon maritimus Willd., Gesell. Naturf. Freund. Berlin (n.s.) 3: 443. 



monspeliensis and Agrostis alba (Bull. Soc. Bot. France 2: 288. 1875). 



1801. France. 

 Alopecurus maritimus Poir., in Lam., Encycl. 8: 779. 1808. Based on Poly- 



pogon maritimus Willd. 

 Polypogon monspeliensis var. maritimus Coss. and Dur., Expl. Sci. Alger. 2: 70. 



1867. Based on P. maritimus Willd. 

 (1) Polypogon monspeliensis (L.) Desf. Fl. Atlant. 1: 67. 1798. Based on 



Alopecurus monspeliensis L. 



Alopecurus monspeliensis L., Sp. PI. 61. 1753. Europe. 

 Phleum crinitum Schreb., Beschr. Gras. 1: 151. 1769. Based on Alopecurus 



monspeliensis L. 

 Alopecurus aristulatus var. monspeliensis Huds., Fl. Angl. 28. 1778. Based on 



A. monspeliensis L. 

 Agrostis alopecuroides Lam., Tabl. Encycl. 1: 160. 1791. Based on Alopecurus 



monspeliensis L. 

 Phleum monspeliense Koel., Descr. Gram, 57. 1802. Based ou 



monspeliensis L. 



