Myrcia tenuifolia

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

12. Myrcia tenuifolia (O. Berg 1857 –1859: 67) Sobral (2006: 136)

≡ Aulomyrcia tenuifolia O.Berg. Type:— BRAZIL. Bahia (“ Bahia. Ilheos” on label), 1835 (fl.), Blanchet 2321 (holotype HAL [89806] [image!], isotypes BM!, F!, G!, K!, LE!, MICH!, NY!, P!, W!). Figure 22 .

The protologue of Aulomyrcia tenuifolia ( Berg 1857 –1859) cites Blanchet 2321 in the herbarium of Schlechtendal (“v. in hb. Schlechtend.”). Currently, the Schlechtendal herbarium is housed at the HAL herbarium ( Stafleu & Cowan 1985) where this collection bears Berg’s annotation (“ Aulomyrcia tenuifolia Bg ”), as does the duplicate at LE. However, Berg only visited the LE herbarium while preparing the supplement to Flora Brasiliensis (published in 1859), well after description of A. tenuifolia in volume 14 of Flora Brasiliensis (published in 1857). The duplicate at HAL ( Figure 22 ) therefore is the only one to have been seen by Berg for the description of A. tenuifolia . It is therefore considered the holotype as proposed by Sobral (2006).

The type locality (“Ilheos”, i.e., the municipality of Ilhéus, Bahia state) is indicated on some specimen labels (G and K herbaria). This region is part of the species distribution and also corresponds to the areas visited by Blanchet or his collaborators ( Urban 1906); the vicinity of Ilhéus is here considered the type locality of the species. Berg (1857 –1859) cites in the protologue “Habitat in prov. Bahiensis” and “Pl. Hamadryas” (i.e., Hamadryades sensu Martius 1824 ). Hamadryades is equivalent to the Caatinga domain, where the species does not occur; the term Dryades ( Martius 1840) is the equivalent to the Atlantic Forest, where the species occurs. Again, it is believed that this discrepancy regarding the type locality is the author’s error, as in the cases of Aulomyrcia subavenia and Calyptranthes cordata .

Figures

FIGURE 22. Holotype of Aulomyrcia tenuifolia O. Berg (Blanchet 2321, HAL [accession number 89806]). Image used with permission and provided by the Martin-Luther-Universität.