MANUAL OF THE GRASSES OF THE UNITED STATES 835 



Aira holciformis Steud., Syn. PL Glurn. 1: 221. 1854. Based on Deschampsia 

 holciformis Presl. 

 Desmazeria sicula (Jacq.) Dum., Coram. Bot. 27. 1822. Based on Cynosurus 

 siculus Jacq. The generic name spelled Demazeria; later (Obs. Gram. Belg. 

 46. 1823) changed to Desmazeria by Dumortier. 

 Cynosurus siculus Jacq., Obs. Bot. 2: 22. pi. 43. 1767. Europe. 



(15) DIARRHENA Beauv. 19 



(I) Diarrhena americana Beauv., Ess. Agrost. 142. pi. 25. f. 2. 1812. Based 

 on Festuca diandra Michx. 



Festuca diandra Michx., Fl. Bor. Amer. 1: 67. 1803. Not F. diandra Moench., 



1794. "Kentucky, Tennessee, etc." Michaux. 

 Diarina festucoides Raf., Med. Repos. N.Y. 5: 352. 1808. Not Diarrhena 



festucoides Raspail, 1825. Based on Festuca diandra Michx. 

 Festuca americana Michx.; Beauv., Ess. Agrost. 162. 1812. Name only. 

 Korycarpus arundinaceus Zea; Lag., Gen. and Sp. Nov. 4. 1816. America. 

 Roemeria zeae Roem. and Schult., Syst. Veg. 1: 61, 287. 1817. Source 



unknown. 

 Diarina sylvatica Raf., Jour. Phys. Chym. 89: 104. 1819. Based on Festuca 



diandra Michx. 

 Diarrhena diandra Wood Class-book ed. 2: 612. 1847. Based on Festuca 



diandra Michx. 

 Corycarpus diandrus Kuntze, Rev. Gen. PI. 2: 772. 1891. Based on festuca 



diandra Michx. 

 Diarrhena festucoides Fernald, Rhodora 34: 204. 1932. Not D. festucoides 



Raspail, 1825. Based on Diarina festucoides Raf. 



(121) DIGITARIA Heist. 



(8) Digitaria filiformis (L.) Koel., Descr. Gram. 26. 1S02. Based on Panicum 



filiforme L. 

 Panicum filiforme L., Sp. PI. 57. 1753. North America, Kalm. 

 Paspalum fdiforme Flugge, Monogr. Pasp. 139. 1810. Not P. filiforme Swartz, 



1788. Based on Panicum filiforme L. 

 Paspalum furcatum. var. filiforme Doell, in Mart., Fl. Bras. 2 2 : 104. 1877. 



Based on Digitaria filiformis Muhl. (the same as Flugge) but misapplied to 



a species of Axonopus. 

 Syntherisma filiformis Nash, Bull. Torrey Club 22: 420. 1895. Based on 



Panicum filiforme L. 

 Digitaria laeviglumis Fernald, Rhodora 22: 102. 1920. Manchester, N.H., 



Batchelder. 

 (4) Digitaria floridanaHitchc, Biol. Soc. Wash. Proc. 41: 163. 1928. Hernando 



Countv, Fla., Hitchcock Fla. PL 2517. 



(II) Digitaria gracillima (Scribn.) Fernald, Rhodora 22: 101. 1920. Based on 

 Panicum gracillimum Scribn. 



Panicum gracillimum Scribn., Bull. Torrey Bot. Club 23: 146. 1896. Eustis, 



Fla., Nash 1192. 

 Syntherisma gracillima Nash, Bull. Torrey Bot. Club 25: 295. 1898. Based 



on Panicum gracillimum Scribn. 

 Syntherisma bakeri Nash, Bull. Torrey Bot. Club 25: 296. 1898. Grasmere, 



Fla., C. H. Baker 47. 

 Digitaria bakeri Fernald, Rhodora 22: 102. 1920. Based on Syntherisma 



bakeri Nash. 

 (2) Digitaria horizontal Willd., Enum. PL 92. 1809. Dominican Republic. 

 Phalaris velutina Forsk., Fl. Aegypt. Arab. 17. 1775. No exact locality given. 



Not Digitaria velutina Hitchc, 1927. [D. velutina Beauv., 1812 is name 



only.] 

 Milium digitatum Swartz, Prodr. Veg. Ind. Occ. 24. 1788. Not Digitaria 



digit ata Buse, 1854. Jamaica. 



i» Diarina Raf., Med. Repos. N.Y. 5: 352. 1808, proposed in a review of Michaux's Flora, with a single 

 species, D. festucoides Raf., based on Festuca diandra Michx., not F. diandra Moench., 1794. Since there is 

 no description, the genus is not validly published. Diarrhena Beauv. (Ess. Agrost. 142, 160. pi. 25. f. 1. 

 1812) is described, with a single species, D. americana Beauv., based on Festuca diandra Michx. The 

 generic name is credited (p. 160) to Schmal. [Rafinesque-Schmalz], by typographical error given as " Smart " 

 on page 142. The changed spelling is accepted with Beauvois as author. Furthermore, Diarrhena is a 

 conserved name. 



