Myrcia obtusata (O.Berg) M.F.Santos, 2024

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 : 141

5.2.8. Myrcia obtusata (O.Berg) M.F.Santos , comb. nov. Aulomyrcia obtusata O. Berg (1855 –1856: 39). Type:— GUYANA. Roraima ( Brazil?), 1843, Robert H. Schomburgk 704 (lectotype W [image!], designated here; isolectotypes B [destroyed], K [image!]). Remaining syntypes:— GUYANA. Roraima ( Brazil?), 1843, Robert H. Schomburgk 1085 (B [destroyed], MEL [image!], K [image!]).

Myrcia obtusata is a poorly known species, occurring in Guyana and/or the Roraima state of Brazil (according to the type label). Features such as the inflorescence with subopposite branching and persistent bracts, the hypanthium prolonged above the top of the ovary, the glabrous receptacle and bilocular ovary suggest affinity with Myrcia sect. Aulomyrcia . The species resembles Myrcia inaequiloba ( De Candolle 1828: 282) Lemée (1954: 150) .

We choose the specimen collected by Robert H. Schomburgk as lectotype, as it bears the handwriting of Otto Berg who originally described the species.