Urochloa maxima

Family:POACEAE
Species:Urochloa maxima (Jacq.)R.D.Webster
Common Name:GUINEAGRASS
Plant Notes:Based on morphology this species was moved to Urochloa by Webster (1987) which was later corroborated by DNA studies (Salariato et al. 2010). Webster (1987: 242) wrote "The compound branching pattern of the primary branches is the only basis for placing this species in Panicum. It has numerous spikelet, vegetative and anatomical characteristics in common with other species of Urochloa (as defined here) and its transfer is taxonomically essential." Previously it had been placed in the distantly related genus Panicum s.s. or the small genus Megathyrsus which included one other species (Simon & Jacobs 2003).
Status:Not Native, EPPC(II), FAC (NWPL)
Specimen: View details of USF Herbarium specimens

** Not applicable or data not available.

Classification

Division
Class
Sub Class
Order POALES
FamilyPOACEAE
Genus Urochloa
Species Urochloa maxima (Jacq.)R.D.Webster - GUINEAGRASS

Citation

Citation UROCHLOA MAXIMA (Jacquin) R.D. Webster, Austral. Paniceae 241. 1987.
Basionym: Panicum maximum Jacquin 1781.
Type: GUADELOUPE: Without data (lectotype: W). Lectotypified by Hitchcock & Chase, Contr. U.S. Natl. Herb. 15: 78. 1910.

** Not applicable or data not available.

Source

CountyHerbariaLiterature Citation (If Applicable)
Alachua USF  
Brevard USF  
Broward USF  
Charlotte USF  
Collier USF  
Columbia FLAS  
DeSoto USF  
Dixie USF  
Escambia USF  
Gadsden FSU  
Glades USF  
Hardee USF  
Hendry FLAS  
Hernando USF  
Highlands USF  
Hillsborough USF  
Indian River USF  
Jefferson FLAS  
Lake USF  
Lee USF  
Leon FLAS  
Manatee USF  
Marion USF  
Martin USF  
Miami-Dade USF  
Monroe Keys USF  
Monroe Mainland FTG  
Orange USF  
Osceola USF  
Palm Beach USF  
Pasco USF  
Pinellas USF  
Polk USF  
Putnam USF  
Santa Rosa FSU  
Sarasota USF  
Seminole USF  
St. Lucie USF  
Sumter USF  
Volusia USF  

Synonyms

– Denotes synonyms that are applicable to the state. Show these synonyms only

SynonymFull CitationBasionymType
Megathyrsus maximus Megathyrsus maximus (Jacquin) B. K. Simon & S. W. L. Jacobs, Austrobaileya 6: 572. 2003.BASIONYM: Panicum maximum Jacquin 1781. 
Panicum maximum Panicum maximum Jacquin, Icon. Pl. Rar. 1: 2, t. 13. 1781 TYPE: GUADELOUPE: Without data (lectotype: W). Lectotypified by Hitchcock & Chase, Contr. U.S. Natl. Herb. 15: 78. 1910.
Panicum giganteum Panicum giganteum Mez, Bot. Jahrb. Syst. 34: 143. 1904.  
Panicum gongylodes Panicum gongylodes Jacquin f., Ecl. Gram. Rar. 30, t. 21. 1814-1821.  
Panicum heynei Panicum heynei Roth, Nov. Pl. Sp. 49. 1821.  
Panicum hirsutissimum Panicum hirsutissimum Steudel, Syn. Pl. Glumac. 1: 72. 1853. TYPE: SOUTH AFRICA:
Panicum jumentorum Panicum jumentorum Persoon, Syn. Pl. 1: 83. 1805.BASIONYM: Panicum polygamum Swartz 1788, non Forsskål 1775. 
Panicum laeve Panicum laeve Lamarck, Tabl. Encycl. 1: 172. 1791. TYPE: "Ste. Dominique", without data (holotype: P).
Panicum maximum subsp. commune Panicum maximum Jacquin, subsp. commune (Nees von Esenbeck) Peter, Repert. Spec. Nov. Regni Veg. Beih. 40(1): 184, 194. 1929.BASIONYM: Panicum maximum Jacquin, var. commune Nees von Esenbeck 1841. 
Panicum maximum var. altissimum Panicum maximum Jacquin, var. altissimum Kuntze, Revis. Gen. Pl. 3(2): 362. 1898. TYPE: MOZAMBIQUE:
Panicum maximum var. commune Panicum maximum Jacquin, var. commune Nees von Esenbeck, Fl. Afr. Austral. Ill. 36. 1841. TYPE: SOUTH AFRICA:
Panicum maximum var. glaucum Panicum maximum Jacquin, var. glaucum Nees von Esenbeck, Fl. Afr. Austral. Ill. 36. 1841. TYPE: SOUTH AFRICA: Durban, s.d., Drege s.n. (holotype: ?).
Panicum maximum var. gongylodes Panicum maximum Jacquin, var. gongylodes (Jacquin) Döll, in Martius, Fl. Bras. 2(2): 203. 1877.BASIONYM: Panicum gongylodes Jacquin 1814-1821. 
Panicum maximum var. heterotrichum Panicum maximum Jacquin, var. heterotrichum Peter, Repert. Spec. Nov. Regni Veg. Beih. 40(1, Anh.): 42. 1930. TYPE: TANZANIA: Arusha Distr.: Meru, s.d., Peter 42552 (holotype: B(destroyed)).
Panicum maximum var. hirsutissimum Panicum maximum Jacquin, var. hirsutissimum (Steudel) Oliver, Trans. Linn. Soc. London 29: 171. 1875.BASIONYM: Panicum hirsutissimum Steudel 1854. 
Panicum maximum var. hirsutum Panicum maximum Jacquin, var. hirsutum Peter, Repert. Spec. Nov. Regni Veg. Beih. 40(1): 195; 40(Anh.): 42. 1929. TYPE: TANZANIA: Tabora Distr.: Nagulu, s.d., Peter 34714 (holotype: B(destroyed)).
Panicum maximum var. laeve Panicum maximum Jacquin, var. laeve Nees von Esenbeck, Fl. Afr. Austral. Ill. 36. 1841. TYPE: SOUTH AFRICA: George Distr., s.d., Mund s.n. (holotype: B).
Panicum maximum var. pubiglume Panicum maximum Jacquin, var. pubiglume K. Schumann, in Engler, Pflanzenw. Ost.-Afrikas B: 85. 1895. TYPE: TANZANIA: Without data, Holst 8716 (lectotype: B; isolectotype: K). Lectotypified by Veldkamp, Blumea 41: 197. 1996.
Panicum maximum var. trichoglume Panicum maximum Jacquin, var. trichoglume Robyns, Mém. Inst. Roy. Colon. Belge, Sect. Sci. Nat. (8) 1(6): 31. 1932. TYPE: ZAIRE: Without data, Vanderyst 27725 (holotype: BR).
Panicum pamplemoussense Panicum pamplemoussense Steudel., Syn. Pl. Glumac. 1: 71. 1853.  
Panicum polygamum Panicum polygamum Swartz, Prodr. 24. 1788, non Forsskål 1775. TYPE: JAMAICA: Without data, Swartz s.n. (lectotype: S). Lectotypified by Hitchcock & Chase, Contr. U.S. Natl. Herb. 15: 78. 1910.
Panicum polygamum var. gongylodes Panicum polygamum Swartz, var. gongylodes (Jacquin) E. Fournier, Mexic. Pl. 2: 28. 1886.BASIONYM: Panicum gongylodes Jacquin 1814-1821. 
Panicum praelongum Panicum praelongum Steudel, Syn. Pl. Glumac. 1: 73. 1853. TYPE: SENEGAL: Without data, Herb. Lenormand s.n. (holotype: P).
Panicum scaberrimum Panicum scaberrimum Lagasca y Segura, Gen. Sp. Pl. 2. 1816. TYPE: "Habitat in Nova Hispania. Introd. ann. 1804 ex seminibus per D. Sesse missis", (holotype: MA).
Panicum sparsum Panicum sparsum Schumacher, Beskr. Guin. Pl. 64. 1827. TYPE: GHANA: Without data, Thonning s.n. (holotype: C; isotype: S).
Panicum teff Panicum teff Desvaux, Opusc. Sci. Phys. Nat. 97. 1831. TYPE: ETHIOPIA: Without data (holotype: P).
Panicum tephrosanthum Panicum tephrosanthum Hackel, in Schinz, Bull. Herb. Boissier, ser. 2. 1: 766. 1901. TYPE: MOZAMBIQUE: Boruma, s.d., Menyharth 898 (holotype: Z).
Panicum trichocondylum Panicum trichocondylum Steudel, Syn. Pl. Glumac. 2: 74. 1853. TYPE: GUADELOUPE: Without data, Duchassaing de Fontbressin s.n. (holotype: P?).
Urochloa maxima var. trichoglumis Urochloa maxima (Jacquin) R. D. Webster, var. trichoglumis (Robyns) R. D. Webster, Austral. Paniceae 242. 1987.BASIONYM: Panicum maximum Jacquin, var. trichoglume Robyns 1932. 

Specimens

Country State County Date Specimen Notes Image
USA Florida Pinellas Co. 29 Apr 1983 G. Fleming 3551
USA Florida Pinellas Co. 31 Aug 1976 P. Genelle 2289
USA Florida Miami-Dade Co. 11 Aug 1963 O. K. Lakela 26156
USA Florida Miami-Dade Co. 01 Sep 1994 S. L. Orzell 23105
USA Florida Brevard Co. 01 Oct 2002 T. MacClendon 99
USA Florida Escambia Co. 26 Jul 1998 J. R. Burkhalter 15974
USA Florida Brevard Co. 13 Oct 1973 R. W. Long 4003
USA Florida Monroe Co. 28 Nov 1969 R. W. Long 2992
USA Florida Broward Co. 08 Jun 2001 P. L. Howell 424
USA Florida Miami-Dade Co. 27-28 Oct 1969 O. K. Lakela 31949
USA Florida Monroe Co. 09 Jul 1966 R. W. Long 1995
USA Florida Monroe Co. 27 Aug 1968 O. K. Lakela 31598
USA Florida Brevard Co. 04 May 1973 A.G. Shuey s.n.
USA Florida Lake Co. 02 Sep 2000 M. T. Strong 2593
USA Florida Hernando Co. 19 Nov 1993 C. vanHoek 388
USA Florida Polk Co. 13 Sep 1977 T. F. Rochow s.n.
USA Florida Marion Co. 24 Jul 1985 B. F. Hansen 10389
USA Florida Indian River Co. 17 Aug 2002 S. Myers 461
USA Florida Escambia Co. 24 Sep 1995 J. R. Burkhalter 14779
USA Florida Pinellas Co. 12 May 1983 G. Fleming 3566
USA Florida Osceola Co. 14 Aug 1981 B. F. Hansen 8465
USA Florida Putnam Co. 04 Nov 2001 S. Myers 339
USA Florida Martin Co. 26 Aug 1998 K. A. Bradley 1231
USA Florida Sarasota Co. 13 Oct 2004 A. Bishop OS0391
USA Florida Martin Co. 01 Jun 2007 R. H. Roberts s.n. Sheet 1 of 2.
USA Florida Martin Co. 01 Jun 2007 R. H. Roberts s.n. Sheet 2 of 2.
USA Florida Brevard Co. 07 Nov 2005 P. A. Schmalzer 05-105
USA Florida Sumter Co. 09 Nov 2005 B. F. Hansen 13105
USA Florida Brevard Co. 07 Jul 2006 P. A. Schmalzer 06-76
USA Florida Brevard Co. 11 Oct 1973 A.G. Shuey M0334
USA Florida Glades Co. 13 Apr 2003 W. K. Taylor s.n.
USA Florida Brevard Co. 11 Oct 1973 A.G. Shuey M0335
USA Florida Charlotte Co. 24 Nov 1977 A. Fulton 124
USA Florida Collier Co. 15 Aug 1967 O. K. Lakela 30970
USA Florida Miami-Dade Co. 10 Nov 1961 F. C. Craighead s.n.
USA Florida Miami-Dade Co. 23 Oct 1958 W. G. Atwater GS-112
USA Florida Miami-Dade Co. 15 Apr 1959 F. C. Craighead s.n.
USA Florida Lake Co. 17 Oct 1990 R. F. Daubenmire s.n.
USA Florida Pasco Co. 14 Jun 1981 R. P. Sauleda 5473
USA Florida Orange Co. 25 Aug 1981 B. F. Hansen 8689
USA Florida Volusia Co. 03 Nov 2004 P. D. Sorensen 04-11b
USA Florida Pinellas Co. 03 Aug 1993 B. F. Hansen 12339
USA Florida Palm Beach Co. 31 Aug 1967 P. M. Cassen 203
USA Florida Manatee Co. 06 Jun 1984 G. Robinson 619
USA Florida DeSoto Co. 13 Apr 1987 D. W. Hall 1705
USA Florida Sarasota Co. 11 Nov 1984 G. Compton 393
USA Florida Broward Co. 15 Nov 1999 P. L. Howell 118
USA Florida Pinellas Co. 05 Dec 1987 G. Fleming 3911
USA Florida Lake Co. 03 Aug 1985 R. F. Daubenmire s.n.
USA Florida St. Lucie Co. 26 Sep 1985 R. P. Wunderlin 10132
USA Florida Collier Co. 20 Aug 1965 O. K. Lakela 29103
USA Florida Miami-Dade Co. 18 Feb 1965 R. Metzger 53
USA Florida Hillsborough Co. 06 Oct 1977 R. Rose 120
USA Florida Monroe Co. 25 Jun 1966 R. W. Long 1828
USA Florida Manatee Co. 29 Mar 1992 D. Willis MB0019
USA Florida Hardee Co. 15 Jul 1993 S. Cole PC0002
USA Florida Lake Co. 22 Nov 1991 R. F. Daubenmire s.n.
USA Florida Highlands Co. 03 Apr 1998 C. vanHoek s.n.
USA Florida Palm Beach Co. 23 Jun 1967 P. M. Cassen 84
USA Florida Polk Co. 13 Apr 1987 D. W. Hall 1704
USA Florida Lee Co. 20 Apr 1964 O. K. Lakela 26991
USA Florida Brevard Co. 22 Sep 2008 P. A. Schmalzer 08-59
USA Florida Manatee Co. 30 Sep 1999 B. K. Holst 7236
USA Florida DeSoto Co. 15 Sep 2008 A. R. Franck 940
USA Florida Manatee Co. 10 Dec 2002 B. K. Holst 8053
USA Florida Glades Co. 09 Dec 2009 A. R. Franck 1682
USA Florida Lee Co. 09 May 2005 A. Bishop LK0047
USA Florida Volusia Co. 21 Nov 2008 J. M. Kunzer 2672
USA Florida Pinellas Co. 03 Oct 1976 P. Genelle 2492 Sheet 2 of 3.
USA Florida Pinellas Co. 03 Oct 1976 P. Genelle 2492 Sheet 1 of 3.
USA Florida Pinellas Co. 03 Oct 1976 P. Genelle 2492 Sheet 3 of 3.
USA Florida Pinellas Co. 25 Sep 1976 P. Genelle 2363
USA Florida Pinellas Co. 25 Sep 1976 P. Genelle 2352 Sheet 2 of 2.
USA Florida Pinellas Co. 25 Sep 1976 P. Genelle 2352
USA Florida Hillsborough Co. 01 Sep 1978 D. W. Crewz 1461
USA Florida Hillsborough Co. 01 Sep 1978 D. W. Crewz 1461
USA Florida Dixie Co. 18 Sep 2008 B. F. Hansen 13381
USA Florida Martin Co. Nov 1989 R. O. Woodbury s.n.
USA Florida Hardee Co. 29 Jun 2004 A. Bishop PC0065
USA Florida Brevard Co. 13 Jan 2007 P. A. Schmalzer s.n.
USA Florida Seminole Co. 17 Oct 2011 D. H. Williams 2648
USA Florida Brevard Co. 05 Oct 2011 P. A. Schmalzer 11-129
USA Florida Seminole Co. 27 Nov 2011 D. H. Williams 2774
USA Florida Hillsborough Co. 27 Sep 2011 W. D. Longbottom 16253
USA Florida Pasco Co. 27 Sep 2011 W. D. Longbottom 1295
USA Florida Seminole Co. 28 Sep 2012 D. H. Williams 3365
USA Florida Pinellas Co. 23 Jul 2012 D. Hilbert 112
USA Florida St. Lucie Co. 04 Jul 2013 D. H. Williams 3689
USA Florida St. Lucie Co. 05 Jul 2013 D. H. Williams 3731
USA Florida Alachua Co. 09 Aug 2013 D. H. Williams 3811
USA Florida Miami-Dade Co. 06 Apr 2002 K. A. Bradley 2336
USA Florida Hillsborough Co. 22 Aug 2005 C. vanHoek HR0362
USA Florida Hillsborough Co. 12 Nov 2014 A. R. Franck 3672
USA Florida Orange Co. 27 Oct 2014 D. H. Williams 3992
USA Florida Putnam Co. 18 Mar 2015 W. D. Longbottom 22189
USA Florida Hillsborough Co. 13 Sep 2014 C. vanHoek LR1199
USA Florida Indian River Co. 19 Sep 2014 S. Myers 1424
USA Florida Nassau Co. 15 May 2016 W. D. Longbottom 24759
USA Florida Miami-Dade Co. 13 Apr 1970 M. McMahon 47
USA South Carolina Jasper Co. 14 Oct 2015 K. A. Bradley 3695
Bahamas Eleuthera Island 12 Jul 1981 R. P. Sauleda 5768
Dominica St. Paul Par. 28 Jul 1992 S. R. Hill 23961
Puerto Rico Ponce Municip. 02 Aug 2016 B. H. Lenz s.n.
Jamaica Surrey Co. St. Andrew Par. 27 Jun 1963 M. R. Crosby 349
U.S. Virgin Islands St. Croix Island 18 Nov 1981 A. N. Arcuri 1057
Puerto Rico San Juan Municip. 16 Nov 1981 B. F. Hansen 9003
U.S. Virgin Islands St. Croix Island 22 Jul 1983 D. W. Hall 1274 CULTIVATED.
Bahamas Eleuthera Island 27 Dec 1969 W. H. Lewis 7461
USA Florida Highlands Co. 09 Oct 1988 A. Herndon 2259
USA Florida Polk Co. 11 Apr 2016 J. R. Campbell 184
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