212 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



"Finales, Daganiguas, Almicigos, Sept." Panicum sderochloa Trin.a (Mesose- 

 tum sderochloa (Trin.)) of Brazil, the type of which is in the Trinius Herba- 

 rium, differs in having glabrous blades, spikelets 5 mm. long, somewhat scabrous 

 but not hispid, and glumes and lemmas all notched near the apex, hence some- 

 what 3-lobed. In Sauvalle's Flora Cubana Wright 3859 is doubtfully referred to 

 Panicum sderochloa Trin. 



28. BRACHIARIA Griseb. in Ledeb. Fl. Ross. 4: 469. 1853. 



1. Brachiaria plantaginea (Link). 



Panicum plantagineum Link, Hort. Berol. 1: 206. 1827. 



Panicum leandri Trin. Icon. 335. 1836. 



Paspalum platyphyllum Griseb. Cat. PL Cub. 230. 1866. 



Panicum platyphyllum Munro; Vasey, U. S. Dept. Agr. Div. Bot. Bull. 8: 25. 

 1889. 



Brachiaria platyphylla Nash in Small, Fl. Southeast. U. S. 81. 1903. 



Wright 3853, 3441; in dense patches in pasture, Sabinilla, June, Wright 3867. 



The type of Link's species is in the Berlin Herbarium. Wright's. 3853 intheSauvalle 

 Herbarium bears the secondary number 174. In the Grisebach Herbarium are two 

 specimens, the type of Paspalum platyphyllum from western Cuba, 1863, numbered 

 "892=3441" and no. 174 labeled, "Damp places in roads and elsewhere, Zarabanda, 

 May 4." This species is placed in the genus Brachiaria because the spikelets are 

 placed with the first glume toward the rachis. 



29.. HYMEN ACHNE Beauv. Agrost. 4S. pi. 10. f. 8. 1812. 



Inflorescence spike-like; spikelets 4 mm. long 1. H. amplexicaulis. 



Inflorescence of numerous spikes, 1 to 3 cm. long; spikelets 2 to 

 3 mm. long 2. H. auriculata. 



1, Hymenachne amplexicaulis (Rudge) Nees, Agrost. Bras. 276. 1829. 

 Panicum amplexicaule Rudge, PL Guian. 1: 21. 1805. 



Panicum hymenachne Desv. Opusc. 82. 1831. 



Panicum myuros of authors, not Lam.& 



Wright 3469; Santiago de las Vegas, Hitchcock in 1906; Habana, Leon 559; Guines, 

 Leon 577. 



The specimen in the Grisebach Herbarium is from eastern Cuba, 1860, and is num- 

 bered " 108=3469 . ' ' No. 3469 in the Gray Herbarium is from ' ' Margin of Rio Bayamo, 

 Oct. 14." 



2. Hymenachne auriculata (Willd.) Chase, Proc. Biol. Soc. Wash. 21: 5. 1908. 



Panicum auriculatumWilld. ; Spreng. Syst. 1: 322. 1825. 



Wright 3863 in part. 



Theiw are three labels with this specimen in the Sauvalle Herbarium, "In ponds, 

 Daganiguas, 'Sept.," "Wet margin of lagunas, Sta. Cruz de los Pinos, Nov. 10," "Low 

 marshy lands, Guanimar, Nov." On the same sheet is a specimen of Panicum con- 

 densum Nash, and one of P. laxum Sw. 



The specimen of Hymenachne is fragmentary, but appears to belong to this species. 

 Wright's 3863 in the National Herbarium is mixed with Panicum laxum Sw. Wright's 

 3863 in the Gray Herbarium is mixed with P. condensum. 



30. SACCIOLEPIS Nash in Britton, Man. 89. 1901. 



Spikelets 4 mm. long, on slender pedicels 2. ^S. striata. 



Spikelets 2 to 3 mm. long, subsessile. 



a Icon. 283. 1836. &See Proc. Biol. Soc. Wash. 21: 1. 1908, 



