Corresponding author: Mariana de Oliveira Bünger (
Academic editor: P. de Lange
A new section of
Bünger MO, Mazine FF, Lucas EJ, Stehmann JR (2016) Circumscription and synopsis of
The genus
Recently, based on a molecular (nuclear and plastid markers) phylogenetic analysis,
After broad sampling of
Bünger et al. (unpubl. res.) also have optimised morphological characters across the molecular tree, presenting useful results with which to distinguish the sections. Results indicated that these characters are uncommon in
To avoid continued recognition of a paraphyletic taxon we herein recognize a new section called
The section name “
Trees or shrubs; hairs simple. Indeterminate inflorescence which produces a floral region that, for instance, produces monads, dyads or triads and vegetative innovative shoots, as an auxotelic inflorescence (Briggs and Johnson 1989); bracteoles linear or narrowly elliptic persistent at anthesis but caducous in mature fruits; flowers showy always 4–merous; sepals showy, free, foliaceous, sepals and petals concealing the apex of the bud; ovary 2–locular; ovules 2–many, placenta axile. Fruit crowned by the calyx lobes. Seeds 1–2; seed coat membranous or cartilaginous; embryo with fused cotyledons.
The protologue and the examinated holotype of
Brazil. São Paulo: Salesópolis, na Estação Biológica de Boracéia, 15 Jan. 1968,
This species has glabrous leaves without cartilaginous margins, dots visible mostly abaxially, leaf apices are acute or obtuse, the hypanthium is velutinous.
The lectotype was chosen for
Brasil, Minas Gerais: Ituiutaba, San Vicente, 12 Sep. 1950,
Brazil.
The lectotypes chosen for
Suriname. Fluv. Coppename inf., Went FAFC 142 (holotype: U! [0005034])
1 | Hypanthium glabrous |
|
– | Hypanthium with trichomes | |
2 | Leaves with caudate apices and black-floccose indument on mature leaves |
|
– | Leaves with acuminate apices, acute, obtuse or rostrate; glabrous or without black-floccose hairs | |
3 | Leaves usually with cartilaginous margins |
|
– | Leaves always without cartilaginous margins | |
4 | Leaves with acuminate or rostrate apices |
|
– | Leaves with acute or obtuse apices | |
5 | Calyx lobes acuminate 50 to 70 mm long. |
|
– | Calyx lobes acute 3.9 to 7 mm long. |
|
We thank all curators of the visited herbaria for allow us to study the specimens and to Coordenacão de Aperfeicoamento de Pessoal de Nível Superior (CAPES) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for the financial support received by the first and the last authors.