Microlicia longirostrata, a new species of Melastomataceae from Goiás in central Brazil

Abstract

Abstract—Microlicia longirostrata (Melastomataceae), a new species from Goiás, is described and illustrated, and a discussion on leaf anatomy is also provided. The new species resembles M. consimilis and M. psammophila, but differs from them in having an indumentum with both short-stalked, spherical, glandular trichomes and long-stalked, glandular emergences, polysporangiate anthers and antesepalous stamens with a very long beak (2‐2.5 mm long), and annular collenchyma on the adaxial region of the midrib.

Leaf ontogenesis of Trembleya phlogiformis DC. (Microlicieae, Melastomataceae): functional aspects and indumentum characterization

“…Regarding the anatomical characterization of trichomes, the presence of uni-or biseriate stalks with variations in their length have been reported in anatomical studies of other representatives of Microlicieae (Mentink and Baas 1992;Reis et al 2005;Cassiano et al 2010;Romero and Castro 2014;Romero et al 2015aRomero et al , 2015bRomero et al , 2017Romero et al , 2019aRomero et al , 2019bRomero et al , 2021Silva et al 2018a;Pacifico et al 2019;Carmo et al 2019Carmo et al , 2020.…”

Microlicia deflexa and M. johnwurdackiana (Melastomataceae), two new species from the Brazilian Cerrado

“… Microlicia deflexa is morphologically similar to M. serpyllifolia D.Don, which occurs in Rio de Janeiro, Minas Gerais, Goiás, Bahia and Distrito Federal ( Silva and Romero 2008 , as M. fulva ; Romero and Woodgyer 2015 ; Romero et al 2020 ) in campo rupestre, campo limpo and cerrado. Both species have long pedicel and sepal, dimorphic stamen with bicolorous and tetrasporangiate anther.…”

“… Microlicia deflexa also bears some resemblance to Microlicia helvola (Spreng.) Triana, which occurs in Goiás, Mato Grosso do Sul, Mato Grosso and Minas Gerais States ( Romero et al 2020 ; Versiane et al 2020 ) in campo limpo, campo sujo and the edges of vereda and swamp areas ( Bacci et al 2016 ; Versiane et al 2016 ) and less frequently in cerrado rupestre ( Machado and Romero 2020 ). Microlicia deflexa and M. helvola are subshrub or shrub with sessile leaf or with a short petiole, acute at the apex, rounded at the base and 3–5-veined.…”

“… Microlicia johnwurdackiana also bears some resemblance to M. fasciculata Martius ex Naudin and M. polystemma Naudin. Microlicia fasciculata occurs in São Paulo, Minas Gerais, Goiás, Bahia and Distrito Federal ( Silva and Romero 2008 ; Romero et al 2020 ) in campo rupestre, cerrado, campo limpo, campo sujo and campo úmido, while M. polystemma occurs in São Paulo, Minas Gerais, Goiás and Distrito Federal ( Silva and Romero 2008 ; Romero and Woodgyer 2015 ; Bacci et al 2016 ; Romero et al 2020 ) in campo rupestre and campo úmido. Both species are similar to M. johnwurdackiana in having setose trichomes and spherical glands covering the branch, leaf, pedicel, hypanthium and sepal.…”

“… Microlicia D.Don is a predominantly Brazilian genus composed of ca. 240 species ( Versiane et al 2021 ), with most species occurring in the campo rupestre from Minas Gerais, Bahia and Goiás States ( Romero 2003a , b ; Romero et al 2020 ) and about 49 species occurring in the cerrado phytophysiognomy. The species are generally characterised by solitary flowers or, in dichasia, reduced to one flower, with five to six occasionally nine petals, a superior or semi-inferior ovary with three to six locules and capsules dehiscing longitudinally from the apex to the base (basipetal) or from the base to the apex (acropetal) (see Versiane et al 2021 ).…”