Landrum campomanesia

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Leslie R. Landrum
School of Life Sciences Arizona State University Tempe, Arizona 85287-4501, U.S.A.

Marla Ibrahim U. de Oliveira
Programa de Pós-Graduação em Botânica
Departamento de Ciências Biológicas Universidade Estadual de Feira deSantana Av. Transnordestina, s/n, Novo Horizonte, 44036-900 Feira de Santana, Bahia, BRAZIL

A new species of Campomanesia Ruiz et Pav., collected by Blanchet in Bahia, Brazil, is here recognized. A description, discussion, images of collections and a key comparing Campomanesia blanchetiana Landrum & Ibrahim with two similar species, C. eugenioides (Cambess.) Legrandand C. espiritosantensis Landrum, are provided.

Uma nova espécie de Campomanesia Ruiz et Pav., coletada por Blanchet no estado da Bahia, Nordeste do Brasil, é reconhecida neste trabalho. São apresentadas descrição, discussão, fotografias e uma chave de identificação para comparar Campomanesia blanchetiana Landrum & Ibrahim com duas espécies semelhantes, C. eugenioides (Cambess.)Legrand e C. espiritosantensis Landrum. k ey words: Taxonomy, Moricand, Nazaré das Farinhas, old herbarium specimens

Jacques Samuel Blanchet, Swiss ambassador in Bahia, Brazil, from 1828 to 1856 and an early plant collector in that country (Staflue & Cowan 1976), has provided numerous type specimens, as can be deduced by searching the epithets containing “blanchet” in the International Plant NameIndex ( ipni/ Some genera are named in his honor, for instance Blanchetia DC. (Asteraceae) (Stafleu & Cowan 1976). Most of these taxa were recognized as new in the 19th Century, but some are still being discovered based on Blanchet collections. For example, Landrum and Funch (2008) recently described Psidium bahianum with a Blanchet collection cited as aparatype. The present new species is known to us by only four sheets, one each at F and NY, and two at G, all distributed as Blanchet collections and possibly all originally held at the Moricand Herbarium. This herbarium of ca. 50,000 specimens was amassed in the early 19th century by Moise-Etienne Moricand, a botanical associate of A. P. de Candolle (Stafleu & Cowan 1981). The two G specimens havelabels indicating that they were donated in 1908 by the grandson of Moricand. Specimens of our new species have been filed as Psidium indet. and under “P. aggregatum,” a nomen nudum, and Myrtus blanchetiana O. Berg (=P. salutare var. salutare; Landrum 2003) for perhaps more than 100 years. To even the trained eye, they would appear to be Psidium, but when an ovary was dissected, the 8–10-locularovary, with 7–10 ovules per locule, clearly placed the specimens in Campomanesia (Fig. 2D). Flowering specimens of Psidium and Campomanesia are superficially very similar and many species of Campomanesia were originally described as Psidium. Fruit and seed characters separate the genera as well (Landrum and Sharp 1989), but are not available for this new species. The packet of the NY specimencontains a hand written note in Latin comparing the plant with species of Psidium L. (some of which are now placed in Campomanesia Ruiz et Pav.) and Myrtus L. (one of which is now placed in Calycolpus O. Berg). No species or genera of O. Berg are mentioned, so it is likely that the note was written before the work of Berg on Brazilian Myrtaceae (1855–1859). Apparently Berg never saw any of the sheets,as he doubtless would have described them as new. On one of the sheets from G there is a label (in the same hand writing as the note at NY) identifying the locality of collection as Nazareth [Nazaré] das Farinhas and the collector as “M. Blanchet.” Presumably, the note was not written by Blanchet, but could have been written by Moricand.
J. Bot. Res. Inst. Texas 4(2): 603 – 607. 2010

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