Two new synonyms and a species reinstated in Phoradendron Nuttall (Viscaceae)

Abstract

RESUMO -(Dois novos sinônimos e uma espécie restabelecida em Phoradendron Nuttall (Viscaceae)). Três mudanças taxonômicas são propostas baseadas em coletas intensivas de Viscaceae no Distrito Federal, Brasil. Phoradendron andersonii Rizzini, previamente considerada sinônimo de P. perrottetii (DC.) Eichler é restabelecida baseada na seguinte combinação de caracteres: entrenós jovens compressos com ângulos agudos na porção distal, espigas curtas com até 2,5 cm de comprimento, artículos mistos de flores masculinas e femininas, flores bisseriadas e frutos amarelo-pardacentos. Phoradendron irwinianum Kuijt é sinonimizada sob P. apiciflorum Rizzini, espécie previamente conhecida apenas do tipo do oeste de Minas Gerais. Por fim a localização do material tipo de P. brachyklados Rizzini, incorretamente citado no protólogo, resulta em proposta para que esta espécie seja tratada como um sinônimo de P. hexastichum (DC.) Grisebach. Palavras-chave:Cerrado, Distrito Federal, hemiparasita, taxonomia ABSTRACT -(Two new synonyms and a species reinstated in Phoradendron Nuttall (Viscaceae)). Three taxonomic changes are proposed based on intensive collecting of Viscaceae within the Distrito Federal, Brazil. Phoradendron andersonii Rizzini, previously a synonym of P. perrottetii (DC.) Eichler is reinstated based on the following combination of characters: young internodes compressed with sharp angles at the distal ends, short spikes to 2.5 cm long, articles with intermixed male and female flowers, biseriate flowers, and dirty yellow fruits. Phoradendron irwinianum Kuijt is synonymized under P. apiciflorum Rizzini, previously known only from the type from western Minas Gerais. Finding of the type collection of P. brachyklados Rizzini, incorrectly quoted in the protologue, led to the synonymization proposal of this species under P. hexastichum (DC.) Grisebach.

Synopsis of Dendrophthora and Phoradendron (Santalaceae) in Brazil

“…It is distributed in North America -Mexico, Central America (inclusing Caribbean) and South America -Bolivia, Brazil (AL, BA, CE, ES, MG, PB, PE, PR, RJ, SC, SE, SP), Colombia, Ecuador, Guyana, Peru and Venezuela (Kuijt 2003 Phoradendron andersonii was initially considered a synonym of P. perrottetii (Kuijt 2003), and was latter reestablished as a separate species by Caires & Proença (2007) due to the differences to P. perrottetii, such as the shape of young internodes (compressed in P. andersonii × cylindrical in P. perrottetii), the length of spikes (short, maximum 2.5 cm × long, maximum 7.5 cm) and type of spike (biseriate × triseriate). (See comments under P. bicarinatum).…”

“…The nodes in P. apiciflorum are thickened, similarly to P. coriaceum. We also include P. irwinianum, recognized by Caires & Proença (2007) as synonym of P. apiciflorum, as a new synonym of P. coriaceum. Phoradendron bahiense also has a thickened node and a white-margined cataphyll; and fewer flowers per fertile, pistillate, bract (3(-5)) which are common in P. coriaceum, and therefore we attribute it to variation within the population.…”