Myrcia urbaniana (Burret) Flickinger

Santos, Matheus F., Amorim, Bruno S., Burton, George P., Faria, Jair E. Q., Fernandes, Thiago, Flickinger, Jonathan A., Gaem, Paulo Henrique, Landrum, Leslie R., Lima, Duane F., Proença, Carolyn E. B., Rosa, Priscila O., Lima-Dos-Santos, Leidiana, Setubal, Robberson B., Stadnik, Aline M. S., Staggemeier, Vanessa G., Vasconcelos, Thais N. C. & Lucas, Eve J., 2024, A taxonomic account of Myrciinae (Myrteae, Myrtaceae): generic and sectional placement of forgotten species and a list of all accepted species, Phytotaxa 674 (2), pp. 129-170 : 137

3.27. Myrcia urbaniana (Burret) Flickinger (in Flickinger et al. 2020: 471). Mitranthes urbaniana Burret (1941: 537) . Type:— JAMAICA. Near Troy, unknown date, Perkins 977 (herbarium not cited [not found]).

The sixteen species listed above were described in Calyptranthes (except M. urbaniana ), many of them from the Caribbean region. The genus circumscription is nearly coincident with Myrcia sect. Calyptranthes , which is the most recognisable section of Myrcia . The taxon has a sympodial branching that allows the identification even in sterile specimens. Only its sister group, Myrcia sect. Sympodiomyrcia , consistently displays this feature, but the calyx lobes are free in this section (vs. fused in M. sect. Calyptranthes ) and the distribution is restricted to South America. Most of the protologues of these species describe sympodial branching and/or winged twig, and/or calyptrate flowers, which could allow their placement in Myrcia sect. Calyptranthes . However, their types were not found, making it impossible to be sure about the validity of the names (Burton et al. in prep.). As a result, all the sixteen species listed above are regarded as incompletely known taxa.