A new species of <i>Croton</i> section <i>Cleodora</i> (Euphorbiaceae s.s.) from Minas Gerais, Brazil

Abstract

Croton stellatoferrugineus, a new species from Brazil, is here described and illustrated. This new species is endemic to dry forests at the base of "Pico do Itambé", the highest point of the Espinhaço range, in Minas Gerais State, occurring at 700-900 m elevation. Croton stellatoferrugineus presents morphological features consistent with its inclusion in Croton section Cleodora, due to its shrubby habit, petiolar basilaminar glands, 15 stamens, pistillate flowers with quincuncial aestivation, and multifid styles connate at the base. Resumo Croton stellatoferrugineus, uma nova espécie do Brasil, é aqui descrita e ilustrada. Esta nova espécie é endêmica das florestas secas na base do "Pico do Itambé", o ponto mais alto da cadeia do Espinhaço, no Estado de Minas Gerais, ocorrendo de 700-900 m de altitude. Croton stellatoferrugineus possui características morfológicas que permitem incluílo em Croton seção Cleodora, tais sejam seu habito arbustivo, glândulas do pecíolo basilaminares, 15 estames, flores pistiladas de prefloração quincuncial e estiletes multífidos conados na base.

Molecular phylogenetics and character evolution of the “sacaca” clade: Novel relationships of Croton section Cleodora (Euphorbiaceae)

“…Similarly, another recently described species, C. stellatoferrugineus Caruzo & Cordeiro (Caruzo et al, 2010a), fits the morphological definition of this subsection and therefore is included as well.…”

A revised infrageneric classification and molecular phylogeny of New World Croton (Euphorbiaceae)

“…6H and 7G). The section may be able to be divided into two equally sized groups by distinguishing those whose pistillate flowers have sepals that are mostly free, usually fleshy at the base, and with quincuncial aestivation, from those whose sepals of the pistillate flowers are not fleshy, usually united at least half of their length, and have imbricate aestivation (Caruzo, 2010;Caruzo & al., 2010). Croton cajucara is a widespread species in the Amazon basin that has an extensive history of ethnobotanical uses to treat diarrhea and other ailments (Le Cointe, 1934;…”

“…Samples for which one of the four markers is lacking were included in the combined analysis with the missing sequences coded as missing. The phylogenetic signal within Croton found in other chloroplast markers, such as ndhF, rbcL , matK (Riina, 2006), and trnH-psbA Haber & al., 2010;Caruzo, 2010), has been shown to be highly congruent with that of trnL-F.…”

A new species of dragon’s bloodCroton(Euphorbiaceae) from South America with singular inflorescences

“…Caruzo et al 2008Caruzo et al , 2010Carneiro et al 2011;Secco et al 2012;Berry and Galdames 2013;Silva et al 2014). In this paper we describe the morphology and leaf anatomy of a new arborescent species, Croton amentiformis, occurring in a remote area near the border between Ecuador and Peru.…”