Not a consensus, or at least not for all Brachiaria species.  Some of the Brachiarias are, in fact Urochloa.  Others, apparently, are not.  Please consult with Drs. Cacilda do Valle ([email protected]) and/or José Valls ([email protected]) for two authoritative opinions.

OK, I met Jan Frits Veldkamp recently who swore that they were all Urochloa and the Catalogue of New World Grasses (Soreng et al.) and the new phylogenetic classification (http://onlinelibrary.wiley.com/doi/10.1111/jse.12150/abstract;jsessionid=D034317149092F2DB1D120B25390374D.f02t01) also agree with this.

I think you are right. Have a look at this link.

http://www.theplantlist.org/tpl1.1/record/kew-399726

Some species of Urochloa and Brachiaria have been transferred to other new genera...see Diego Salariato publications on Rupichloa

Rupichloa, a new genus segregated from Urochloa (Poaceae) based on morphological and molecular data

Diego L. Salariato · Liliana M. Giussani · Osvaldo Morrone · Fernando O. Zuloaga

[Hide abstract]

ABSTRACT: Rupichloa, a new genus of Paniceae restricted to Bahia and Minas Gerais, Brazil, and including two species, R. acuminata and R. decidua, is here described on the basis of morphological and molecular characters. Analyses of DNA sequence data from plastid rpl16 and ndhF indicate that the two included species do not belong to Urochloa, in which they were previously placed. The affinities of the new genus with other genera of Paniceae are discussed.

Full-text available · Article · May 2009 · Taxon

Yeah, that article gives a good overview in the intro...Veldkamp transferred the final 3 species left in Brachiaria to Moorochloa (a bit tongue in cheek if you look at the etymology of the name) with everything else being lumped into Urochloa which now has Rupichloa segregated from it.

The molecular data seem to support this but it still seems very contentious.

OK!! so, no more Brachiaria?!!

As far as I understand, nobody's specifically focused on this using molecular data and with a wide sampling of taxa. PlantList and Kew Checklist still treat Brachiaria as a legitimate name. Could be another potential project if anyone's bored!