MANUAL OF THE GRASSES OF THE UNITED STATES 981 



Paneion buckleyanum var. mains Lunell, Amer. Midi. Nat. 4: 222. 1915. 

 Change of name for " Poa tenuifolia var. maior (Vasey)", but that name was 

 never published, and no specimen so named by Vasey can be found. 



Panicum americanum L., Sp. PL 56. 1753. America. This name and 

 Pennisetum americanum Schum., based on it, have been used for P. glaucum (L.) 

 R. Br. The original description is unidentifiable, probably based on a con- 

 fusion of two or more species. (See Chase, Contrib. U.S. Natl Herb 22- 218 

 1921; Amer. Jour. Bot. 8: 43. 1921.) 



Panicum anomalum Walt., Fl. Carol. 72. 1788. South Carolina. A species 

 of Setaria. (See Hitchcock, Mo. Bot. Gard. Kept. 16: 35. 1905.) 



Panicum barbatum LeConte; Torr., in Eaton, Man. Bot. ed. 2. 342. 1818. 

 Not P. barbatum Lam., 1791. New York. The description rather suggests 

 P. barbulatum Michx. 



Panicum cartilagineum Muhl., Deser. Gram. 128. 1817. Georgia. (See Hitch- 

 cock, Bartonia 14: 41. 1932.) 



Panicum debile Torr.; Steud., Nona. Bot. ed. 2. 255. 1841. Not P. debile 

 Desf., 1798, As synonym of P. pubescens. 



Panicum densum Muhl., Descr. Gram. 122. 1817. No locality given. The 

 description suggests one of the Lanuginosa group. 



Panicum dichotomum var. curvatum Torr., Fl. North, and Mid. U.S. 145. 1824. 

 No locality given. 



Panicum dichotomum var. gracile Torr., Fl. North, and Mid. U.S. 145. 1824. 

 "Common in swamps, New York." 



Panicum dichotomum var. pubescens Munro, in Benth., PL Hartw. 341. 1857. 

 Sacramento, Calif., Hartweg. Name only. 



Panicum dichotomum var. spathaceum Wood, Bot. and Flor pt. 2: 393, 1870, 

 No locality mentioned. 



Panicum discolor Spreng., Mant. Fl. Hal. 31. 1807. Pennsylvania, A 

 species of the subgenus Dichanthelium. 



Panicum elliottii Spreng.; Steud., Norn. Bot. ed. 2. 2: 256. 1841. Not P. 

 elliottii Trin., 1829. As synonym of P. pubescens. 



Panicum fimbriatum Willd.; Spreng., Syst. Veg. 1: 316. 1825, as synonym of 

 P. viscidum Ell. [P. scoparium Lam.] South Carolina. A specimen in the 

 Willdenow Herbarium so named is P. albomaculatum Scribn., from Mexico, col- 

 lected by Humboldt. 



Panicum flexuosum Raf., Jour. Bot. Desv. 4: 273. 1814. Not P. flexuosum 

 Retz., 1791. New Jersey. P. rafinesquianum Schult., Mant. 2: 257. 1824, is 

 based on this. 



Panicum gracilescens Desv.; Poir., in Lam., Encycl. Sup. 4: 279. 1816. Caro- 

 lina. Desvaux gives a later description (Opusc. 95. 1831), which disagrees in 

 some respects with that of Poiret. 



Panicum iowense Ashe, N.C. Agr. Expt. Sta. Bull. 175: 115. 1900. Iowa to 

 Kansas. The description suggests P. huachucae or P. praecocius. (See Contrib. 

 U.S. Natl. Herb. 15: 330. 1910.) 



Panicum muhlenbergianum Schult., Mant. 2: 230. 1824. Based on Panicum 

 no. 27 of Muhlenberg's Descriptio Graminum, the description of which is copied. 

 Muhlenberg gives ''Habitat in Georgia." 



Panicum nitidum var. glabrum Torr., Fl. North, and Mid. U.S. 146. 1824. 

 No locality cited. The description suggests P. commutatum Schult. 



Panicum nitidum var. gracile Torr., Fl. North, and Mid. U.S. 146. 1824. 

 Near New York. The description applies fairly well to the vernal phase of P. 

 dichotomum L. 



Panicum nitidum var. majus Vasey, Contrib. U.S. Natl. Herb. 3: 30. 1892. 

 No locality cited. Vasey says, "Here could be placed several variable forms." 



Panicum pensylvanicum Spreng., Nachtr. Bot. Gart. Halle 30. 1801. Penn- 

 sylvania. 



Panicum pumilum Raf., Med. Repos. N.Y. 5: 353. 1808. Name only. 



Panicum speciosum Walt., FL Carol. 73. 1788. South Carolina. The 

 description faintly suggests Sporobolus gracilis (Trin.) Merr. 



Panicum uniflorum Raf., Amer. Monthly Mag. 2: 120. 1817. Flatbush, N.Y. 

 Some species of subgenus Dichanthelium. 



Panicum vilfiforme Wood, Class-book ed. 3. 785. 1861. East Tennessee. 

 Appears to be a species of the group Agrostoidia. 



Paspalum compressum Raf., FL Ludov. 15. 1817. Louisiana prairies, Robin. 



Paspalum dasyphyllum var. floridanum Wood, Amer. Bot. and Flor. pt. 2: 390. 

 1870. [Florida.] 



Paspalum geniculatum Raf., Fl. Ludov, 15. 1817. Louisiana, Robin. 



