Myrcia mutabilis

Santos, Matheus F., Sano, Paulo T. & Lucas, Eve, 2016, Lectotypifications of some Nineteenth Century names and other nomenclatural updates in Myrcia s. l. (Myrtaceae), Phytotaxa 257 (1), pp. 448-450 : 448-450

6. Myrcia mutabilis (O. Berg 1857 –1859: 70) N. Silveira (1985b: 88)

≡ Aulomyrcia mutabilis O.Berg. Type:— BRAZIL (“Brasilia” on label). No date (fl.), Sellow s.n. (lectotype LE [LE 00007103]! designated here). Figure 7 .

= Aulomyrcia calyptranthoides O. Berg (1857 –1859: 67). Myrcia calyptranthoides (O.Berg) Mattos (1966: 60) , syn. nov. Type:— BRAZIL. Bahia: Jacobina (“Jacobina” on label), 1841 (fl.), Blanchet 3393 (lectotype W [0032593]! designated here, isolectotypes BM!, BR!, C!, F!, G!, K!, LE!, MG!, MICH!, NY!, P!, SP!). Figure 8 .

= Myrcia pilodes Kiaerskou (1893: 67) . Marlierea pilodes (Kiaersk.) Kawasaki (1989: 126) . Type:— BRAZIL. Minas Gerais: Serra do Lenheiro (“Brésil (Minas) Serra do Lenheiro” on label), 22 October 1887 (fl.), Glaziou 16976 (lectotype C [C10021651]! designated here, isolectotypes BR!, C [C10021652]!, K!, P!, R!). Figure 9 .

Aulomyrcia mutabilis :—The material housed at the LE herbarium ( Figure 7 ) is the only Sellow collection of Aulomyrcia mutabilis found. This material matches the protologue and bears Berg’s handwriting (“ Aulomyrcia mutabilis Bg ”); it is appropriate as the lectotype. The locality on the label is vague (“Brasilia”), but the protologue ( Berg 1857 –1859) cites “Habitat in montibus Serra do Lenheiro prov. Minas Geraes”. This locality is both congruent with the species distribution and Sellow’s route ( Urban 1906, Herter & Rambo 1953); it is here considered the type locality.

Aulomyrcia calyptranthoides :—Specimens of Myrcia mutabilis from Bahia state in Brazil are less pilose and have slender structures (particularly the inflorescence) relative to the majority of other material of the species. These characteristics are present in the type of Aulomyrcia calyptranthoides but do not warrant recognition of it as a distinct species. These features are variable while the diagnostic features of M. mutabilis are present in the type of A. calyptranthoides : sympodial branching, cylindrical twigs that are not keeled, leaves with inconspicuous venation on the adaxial surface and turbinate floral buds. For these reasons synonymization of A. calyptranthoides in M. mutabilis is proposed.

Berg (1857 –1859) cites the collection Blanchet 3393 housed at the B and W herbaria in the protologue of A. calyptranthoides (“v. in hb. Berol. et Vindob.”). The material at B was destroyed and thus the material at W ( Figure 8 ) is chosen as the lectotype; its label bears Berg’s handwriting (“ Aulomyrcia calyptranthoides Bg ”). The labels in the BR, LE and P herbaria also have Berg’s annotation. The sheet of the isolectotype at K is mixed with a sterile specimen (possibly a Sapotaceae ); this may have been a mistake during mounting as it was not seen in the other herbaria.

The locality indicated in some labels and in the protologue (“Jacobina”, i.e., municipality of Jacobina, Bahia state) is both part of the species distribution and part of the route of Blanchet or his collaborators ( Urban 1906). So, as in the case of Aulomyrcia supraaxillaris, Jacobina is here taken to be the type locality of A. calyptranthoides .

Myrcia pilodes :—There are two sheets of Myrcia pilodes in the C herbarium, both with Kiaerskou’s handwriting (“ Myrcia (Aulomyrcia) pilodes ”). The duplicate chosen as the lectotype ( Figure 9 ) is the one illustrated in the protologue. One leaf and a branching diagram are illustrated (Tab. VIII, d and Tab. XII, d, respectively; Kiaerskou 1893); drafts are attached to the sheet. The locality cited on the labels of the type collections at the P and Museu Nacional (R) herbaria (“Serra do Lenheiro”, in Minas Gerais state) agree with the species distribution and this is here considered the type locality.

Figures

FIGURE 7. Lectotype of Aulomyrcia mutabilis O. Berg (Sellow s.n., LE [LE 00007103]). Image used with permission and provided by the V. L. Komarov Botanical Institute.

FIGURE 8. Lectotype of Aulomyrcia calyptranthoides O. Berg (Blanchet 3393, W [accession number 0032593]). Image used with permission and provided by the Naturhistorisches Museum Wien.

FIGURE 9. Lectotype of Myrcia pilodes Kiaerskou (Glaziou 16976, C [C10021651]). Reproduced with permission of the Natural History Museum of Denmark.