MANUAL OF THE GRASSES OF THE UNITED STATES 899 



Urachne racemosa Trin., Gram. Unifl. 174. 1824. Based on Milium race- 



mosum J. E. Smith. 

 Urachne melanosperma Link, Hort. Berol. 1: 94. 1827. Based on Oryzopsis 



melanocarpa Muhl. 

 (11) Oryzopsis webberi (Thurb.) Benth.; Vasey, Grasses U.S. 23. 1883. Based 



on Eriocoma webberi Thurb. 

 Eriocoma webberi Thurb., in S. Wats., Bot. Calif. 2: 283. 1880. Sierra 



Valley, Calif., Bolander. 



(129) PANICUM L.25 



(14) Panicum aciculare Desv.; Poir., in Lam., Encycl. Sup. 4: 274. 1816. 



"Indes orientales", erroneous; probably from southeastern United States. 

 Panicum setaceum Muhl., Descr. Gram. 99. 1817. Georgia. 

 Panicum subuniflorum Bosc; Spreng., Syst. Veg. 1: 312. 1825. Carolina, 



Bosc. 

 Panicum arenicola Ashe, Jour. Elisha Mitchell Sci. Soc. 15: 56. 1898. Chapel 



Hill, N.C., Ashe. 



Panicum pungens Muhl.; Scribn. and Merr., U.S.Dept.Agr., Div. Agrost. Bull. 

 27: 2. 1900. Not P. pungens Poir., 1816. As synonym of P. setaceum 

 Muhl. 

 Panicum filirameum Ashe, Jour. Elisha Mitchell Sci. Soc. 16: 88. 1900. New 



Hanover County, N.C., Ashe. 



This is the species described in Britton's Manual and in Small's Flora (ed. 1) 

 under the name Panicum neuranthum Griseb. 

 (100) Panicum aculeatum Hitchc. and Chase, Rhodora 8: 209. 1906. District 



of Columbia, Chase 2520. 

 (65) Panicum addisonii Nash, Bull. Torrey Bot. Club 25: 83. 1898. Wildwood, 



N.J., Bicknell in 1897. 

 Panicum owenae Bicknell, Bull. Torrey Bot. Club 35: 185. 1908. Nan tucket, 



Mass., Bicknell in 1907. 

 Panicum commonsianum addisonii Stone, N.J. State Mus. Ann. Rept. 1910: 



205. 1911. Based on P. addisonii Nash. 



(116) Panicum adspersum Trin., Gram. Pan. 146. 1826. Dominican Republic. 

 Panicum thomasianum Steud.; Doell, in Mart., Fl. Bras. 2 2 : 188. 1877, as 



synonym of P. adspersum. St. Thomas, Duchaissing. 

 Panicum keyense Mez, Notizbl. Bot. Gart. Berlin 7: 61. 1917. Sand Key, 



Fla., Curtiss 3606**, 5431, 6705. 



This is the species described as Panicum striatum Lam. by Chapman (Fl. 

 South. U.S. ed. 2. 666. 1883). 

 (147) Panicum agrostoides Spreng., PI. Pugill. 2: 4. 1815. Pennsylvania, 



Muhlenberg. 

 Panicum rigidulum Bosc; Spreng., Syst. Veg. 1: 320. 1825; Nees, Agrost. 



Bras. 163. 1829. [South Carolina? Bosc.] 

 Agrostis polystachya Bosc; Steud., Nom. Bot. ed. 2. 1: 40. 1840, erroneously 



cited as synonym of A. composita Poir. [Carolina, Bosc.] 

 Panicum elongatum var. ramosior Mohr, Contrib. U.S. Natl. Herb. 6: 357. 



1901. Near Mobile, Ala., [Mohr]. 

 (44) Panicum albemarlense Ashe, Jour. Elisha Mitchell Sci. Soc. 16: 84. 1900. 



Scranton, Hyde County, N.C., Ashe in 1899. 

 Panicum velutinum Bosc; Spreng., Syst.. Veg. 1: 315. 1825. Not P. velu- 



tinum Meyer, 1818. Name only. [Bosc.] 

 Panicum meridionale var. albemarlense Fernald, Rhodora 36: 76. 1934. 



Based on P. albemarlense Ashe. 

 (74) Panicum albomarginatum Nash, Bull. Torrey Bot. Club 24: 40. 1897. 



Eustis, Fla., Nash 925. 

 (145) Panicum amarulum Hitchc. and Chase, Contrib. U.S. Natl. Herb. 15: 



96. f. 87. 1910. Virginia Beach, Va., Williams 3090. 

 (144) Panicum amarum Ell., Bot. S.C. and Ga. 1: 121. 1816. Presumably 



South Carolina. 

 Panicum amarum var. minus Vasey and Scribn., U.S.Dept.Agr., Div. Bot. 



Bull. 8: 38. 1889. Fortress Monroe, Va., Vasey. 



Panicum amaroides Scribn. and Merr., U.S.Dept.Agr., Div. Agrost. Circ. 29: 

 5. f. 1. 1901. Based on P. amarum var. minus Vasey and Scribn. 



25 For discussion of types see Hitchc. and Chase, Contrib. U.S. Natl. Herb. 15: 25-327. 1910; 17: 465-522 

 1915. 



