836 MISC. PUBLICATION 200, U. S. DEFT. OF AGRICULTURE 



Axonopus digitatus Beauv., Ess. Agrost. 12, 154. 1812. Based on Milium 



digitatum Swartz. 



Digitaria setigera Roth; Roem. and Schult., Syst. Veg. 2: 474. 1817. Asia. 

 Panicum horizontals G. Meyer, Prim. Fl. Esseq. 54. 1818. Based on Digitaria 



horizontalis Willd. 



Digitaria jamaicensis Spreng., Syst. Veg. 1: 272. 1825. Jamaica. 

 Digitaria setosa Desv.; Hamilt., Prodr. PI. Ind. Occ. 6. 1825. West Indies. 

 Paspalum digitatum Kunth, ReV. Gram. 1: 24. 1829. Based on Milium 



digitatum Swartz. 



Panicum hamiltonii Kunth, Re"v. Gram. 1: Sup. IX. 1830. Based on Digita- 

 ria setosa Desv. 

 Syntherisma setosa Nash, Bull. Torrey Bot. Club 25: 300. 1898. Based on 



Digitaria setosa Desv. 

 Panicum sanguinale var. digitatum Hack.; Urban, Symb. Antill. 4: 86. 1903. 



Based on Milium digitatum Swartz. 

 Panicum sanguinale subsp. horizontale Hack., Ergeb. Bot. Exped. Akad. Wiss. 



Siidbras. 8. 1906; Denkschr. Akad. Wiss. Math. Naturw. (Wien) 79: 69. 



1908. Based on Digitaria horizontalis Willd. 

 Syntherisma digitata Hitchc., Contrib. U.S. Natl. Herb. 12: 142. 1908. Based 



on Milium digitatum Swartz. 

 Digitaria digitata Urban, Symb. Antill. 8: 24: 1920. Not D. digitata Buse, 



1854. Based on Milium digitatum Swartz. 



(3) Digitaria ischaemum (Schreb.) Muhl., Descr. Gram. 131. 1817. Pre- 

 sumably based on Panicum ischaemum Schreb. 

 Panicum ischaemum Schreb.; Schweigger, Spec. Fl. Erland. 16. 1804. 



Germany. 



Digitaria humifusa Pers., Syn. PL 1: 85. 1805. France. 

 Syntherisma glabr urn SchTad., Fl. Germ. 1: 163. pi. 3. f . 6. 1806. Germany. 

 Panicum glabrum Gaudin, Agrost. Helv. 1: 22. 1811. Not P. glabrum L., 



1762. Based on Syntherisma glabrum Schrad. (In Index Kewensis "Ell." 



is erroneously given as author of P. glabrum.') 

 Digitaria glabra Beauv., Ess. Agrost. 51. 1812. Presumably based on 



Syntherisma glabrum Schrad. 

 Paspalum humifusum Poir., Encycl. Sup. 4: 316. 1816. Based on Digitaria 



humifusa Pers. 

 Panicum humifusum Kunth, Re"v. Gram. 1: 33. 1829. Based on Digitaria 



humifusa Pers. 

 Panicum phaeocarpum var. drummondianum Nees, Fl. Afr. Austr. 22. 1841. 



St. Louis, Mo., Drummond. 

 Paspalum glabrum Wood, Amer. Bot. and Flor. pt. 2: 390. 1871. Not P. 



glabrum Poir., 1804. "(Gaud.)", given in parentheses by Wood, doubtless 



refers to Panicum glabrum Gaudin. 

 Paspalum glabrum Cassidy, Colo. Agr. Expt. Sta. Bull. 12: 91. 1890. Not 



P. glabrum Poir., 1804. Colorado. 

 Syntherisma humifusum Rydb., Mem. N.Y. Bot. Gard. 1: 469. 1900. 



Based on Digitaria humifusa Pers. 

 Syntherisma ischaemum Nash., N.Amer. Fl. 17: 151. 1912. Based on 



Panicum ischaemum Schreb. 



The name Panicum lineare L. (Syntherisma lineare Nash) has been used for 

 Digitaria is chaemum but the description does not apply (e.g. "calycis squama 

 exterior brevior, patens, rachi adhaerens"). It is probably Cynodon dactylon. 

 DIGITARIA ISCHAEMUM var. MISSISSIPPIENSIS (Gattinger) Fernald, Rhodora 22: 



103. 1920. Based on Panicum glabrum var. mississippiense Gattinger. 

 Panicum glabrum var. mississippiense Gattinger, Tenn. Fl. 95. 1887, name 



orly, Nashville. Scribn., Tenn. Agr. Expt. Sta. Bull. 7: 39. 1894. Knox- 



ville, Tenn. 

 Panicum lineare var. mississippiense Gattinger; Beal, Grasses N.Amer. 2: 111. 



1896. Presumably based on P. glabrum var. mississippiense Gattinger. 

 Syntherisma linearis mississippiensis Nash, Bull. Torrey Bot. Club. 25: 300. 



1898. Based on Panicum glabrum var. mississippiense Gattinger. 

 (10) Digitaria panicea (Swartz) Urban, Symb. Antill. 8: 23. 1920. Based on 



Milium paniceum Swartz. 



Milium paniceum Swartz, Prodr. Veg. Ind. Occ. 24. 1788. Jamaica, Swartz. 

 Agrostis jamaicensis Poir., in Lam., Encycl. Sup. 1: 258. 1810. Jamaica. 

 Axonopus paniceus Beauv., Ess. Agrost. 12, 154. 1812. Based on Milium 



paniceum Swartz. 

 Syntherisma paniceum Nash, N.Amer., Fl. 17: 152. 1912. Based on Milium 



paniceum Swartz. 

 Digitaria dolicophylla Henr., Blumea 1: 94. 1934. Florida, A. A. Eaton 459. 



