Myrcia nitida Cambessèdes (1832

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

7. Myrcia nitida Cambessèdes (1832 –1833: 309)

Type:— BRAZIL (“Brasilia” on label). No date (fl.), Saint-Hilaire 33a (lectotype MPU [ MPU 010949] [image!] designated here). Figure 10 .

= Eugenia paniculata Cambessèdes (1832 –1833: 338) nom. illeg. Eugeniopsis paniculata O. Berg (1855 –1856: 82). Marlierea paniculata (O.Berg) D. Legrand (1962: 31) , syn. nov. Type:— BRAZIL. Minas Gerais (“Brasilia, In collibus prope Tapanhuacanga” on label), no date (fl.), Saint-Hilaire B1-903 (lectotype MPU [MPU011103] [image!] designated here, isolectotypes F [image!], P!). Figure 11 .

= Eugenia rubiginosa Cambessèdes (1832 –1833: 338). Eugeniopsis rubiginosa (Cambess.) O. Berg (1855 –1856: 82). Myrciaria? rubiginosa (Cambess.) O. Berg (1857 –1859: 359). Marlierea rubiginosa (Cambess.) D. Legrand (1962: 32) , syn. nov. Type:— BRAZIL. Minas Gerais (“Brasilia, In collibus prope Cachoeira” on label), no date (fl.), Saint-Hilaire B1-1101 (lectotype MPU [MPU011092] [image!] designated here, isolectotypes F [image!], P!). Figure 12 .

Myrcia nitida :—Analysis of the type and other collections show that Myrcia nitida , Eugenia paniculata and Eugenia rubiginosa are synonyms. The three species share a set of distinctive characteristics within clade 7: a mainly monopodial branching pattern, cataphylls presents only at the basal internode and obscure leaf venation (particularly on the adaxial surface). Moreover, morphological variation is low and here not considered sufficient to recognize different species.

Only the specimen housed in the MPU Herbaria bears the author’s handwriting identifying the species in the label ( Figure 10 ). For this reason, the material at MPU is here selected as the lectotype. The sheet at P has a different number attached to the type specimen (130) and probably represents another gathering; we consider it and the material at F as syntypes and not as isolectotypes. Neither number (33a and 130) corresponds to any annotation in Saint-Hilaire’s field books ( Pignal et al. 2013). The protologue ( Cambessèdes 1832 –1833) cites the locality as “In montibus prope vicum Itabira in provincia Minas Geraes” (i.e., near to the municipality of Itabira– Minas Gerais state, Brazil). This locality agrees with the species distribution and with Saint-Hilaire’s route ( Urban 1906); it is here considered to be the type locality.

Eugenia paniculata :— Eugenia paniculata was previously considered a synonym of Marlierea eugenioides ( Cambessèdes 1832 –1833: 302) D. Legrand (1958: 256) ( Govaerts et al. 2015, Sobral et al. 2015). However, M. eugenioides has morphological characteristics associated with clade 2 of Lucas et al. (2011) and examination of the type material showed Eugenia paniculata to be part of clade 7.

Again, only the specimen housed in the MPU Herbaria bears the author’s handwriting and, for this reason, is selected as the lectotype ( Figure 11 ). The protologue of Eugenia paniculata ( Cambessèdes 1832 –1833) cites the locality as “In collibus prope vicum Tapanhuacanga in provincia Minas Geraes” (i.e., the region of the municipality of Sabará, Minas Gerais state, Brazil). This locality matches the species distribution and Saint-Hilaire’s route ( Urban 1906); it is here considered to be the type locality.

Eugenia rubiginosa :—As in the two previous cases, the specimen at MPU is selected as the lectotype because it bears the author’s handwriting ( Figure 12 ). The protologue of Eugenia rubiginosa ( Cambessèdes 1832 –1833) cites the locality as “In collibus prope praedium Cachoeira in parte orientali provinciae Minas Geraes”. It was not possible to locate this place within Minas Gerais so the precise type locality remains unclear.

Figures

FIGURE 10. Lectotype of Myrcia nitida Cambessèdes (Saint-Hilaire 33a, MPU [MPU010949]). Image used with permission and provided by the Université Montpellier 2.

FIGURE 11. Lectotype of Eugenia paniculata Cambessèdes (Saint-Hilaire B1-903, MPU [MPU011103]). Image used with permission and provided by the Université Montpellier 2.

FIGURE 12. Lectotype of Eugenia rubiginosa Cambessèdes (Saint-Hilaire B1-1101, MPU [MPU011092]). Image used with permission and provided by the Université Montpellier 2.