Sistemática e filosofia: filogenia do complexo Ocotea e revisão do grupo Ocotea indecora (Lauraceae)

Abstract

Introdução geral Referências 1. Coerência, correspondência e o renascimento da morfologia na sistemática filogenética 5.8. Lista de espécies

Three new species of Ocotea (Lauraceae) from Brazilian Atlantic forest

“…Ocotea calliscypha is included in the O. indecora group (Rohwer 1986;Assis et al 2005), which has 20 species and is defined by a unique morphological synapomorphy, the rhythmic growth of the branchlets (Assis 2009). Within the group, the new species can be distinguished by the leaves with 10-16 pairs of secondary veins and areoles 0.2-0.5 mm diam., by the cataphylls with pubescent to sericeous abaxial surface, the receptacle pubescent outside and glabrous inside, the apex of the anthers ca.…”

Three new species of Ocotea (Lauraceae) from the campos rupestres of Brazil

“…From Greek, "colopho", which means apex. Ocotea colophanthera is included in the O. indecora group (Rohwer, 1986;Assis et al, 2005), which has 20 species and is defined by the rhythmic growth of the branchlets, the only morphological synapomorphy identified (Assis, 2009). The new species can be distinguished from other species of the group by the densely tomentose branchlets, with rhytidome, secondary veins diverging at 60-75(-90°), the pubescent to tomentose receptacle, the apex of whorl I and II stamens 0.2-0.5 mm long, and cupules with a single margin.…”

“…Mez, which has lanose branchlets, without rhytidome, generally larger leaves, (4-)5.5-16.8(-18) cm long, secondary veins diverging at 25-65°, and both inflorescence and outer side of receptacle densely tomentose. In addition, O. lanata grows on Atlantic coastal rain-and semi-deciduous forests, and occasionally in restingas, in southeastern and south Brazil (Assis, 2009). Two syntypes of O. elegans Mez, SaintHilaire C 1 .74 (P) and Glaziou 12121 (B, C, K, P), do not fit the O. elegans circumscription (L. C. S. Assis & R. Mello-Silva, in prep.).…”

“…By the presence of branchlets with rhythmic growth Ocotea pumila is also a member of O. indecora group (Assis, 2009). The new species can be distinguished from the group by its shrubby habit, sericeous branchlets, wide petioles, coriaceous, generally obovate to narrowly elliptic leaves, with secondary veins diverging at 30-60°, areoles 0.1-0.5 mm diam., and stamen apex 0.1-0.2 mm long.…”

“…The genus is not well defined taxonomically, but the species are characterized by stamens with four pollen sacs arranged in two horizontal pairs, together with additional features, such as flowers that generally lack papillae, have free tepals, and either are unisexual or bisexual (van der Werff, 1991(van der Werff, , 2002Rohwer, 1993). The genus is highly diversified in rain forests from Mesoamerica to southeastern Brazil (e.g., Rohwer, 1986;Vicentini & van der Werff, 2000;van der Werff, 2002;Baitello & Marcovino, 2003;Assis et al, 2005;Quinet, 2005;Assis, 2009), and 15 to 20 species inhabit the campos rupestres of Brazil (Giulietti et al, 1987;van der Werff, 1995;Zappi et al, 2003;Assis et al, 2004; L. C. S. Assis, unpubl. data).…”