Epidermal micromorphology and venation patterns of Microlicieae (Melastomataceae) leaves: Looking for new characters for the taxonomy of this neotropical tribe

Systematics of the Trembleya sensu stricto clade of Microlicia (Melastomataceae, Lavoisiereae)

“…It is also not callose-thickened like in most species of the Lavoisiera clade ( Martins and Almeda 2017 ). The leaves always have 1–3 primary basal veins and two or more pairs of secondary basal acrodromous veins (see Carmo et al 2019 ). In most species, the most external pair of acrodromal veins is tenuous and positioned close to the leaf margin.…”

“…Information on leaf anatomy is available for M. altoparaisensis ( Pacifico et al 2019 ), M. calycina ( Pflaum 1897 ), M. chamissoana ( Carmo et al 2019 , 2020 ), M. laniflora ( Pflaum 1897 ; Silva et al 2018 ), M. parviflora ( Pflaum 1897 ; Somavilla and Graciano-Ribeiro 2011 ), M. flaviflora ( Carmo et al 2019 , 2020 ), M. pithyoides ( Pflaum 1897 ), M. rosmarinoides ( Pflaum 1897 ) and M. tridentata ( Pflaum 1897 ). A plate with photos of leaf anatomical characters is presented in Fig.…”

“…In the marginal region, the venation is incomplete in M. flaviflora and arch-shaped in M. chamissoana (fig. 5E in Carmo et al 2019).…”

“…Similar trichomes were commonly referred to as "sessile glands", "sessile glandular trichomes" or "unforrowed sessile glands" (for example, by Wurdack 1986) across the taxonomic literature. As these trichomes are not sessile, they have been treated as typical glandular trichomes in anatomical studies (Reis et al 2005;Cassiano et al 2010;Romero and Castro 2014;Silva et al 2018;Carmo et al 2019Carmo et al , 2020. In a more detailed investigation, Carmo et al (2019) proposed new names for trichomes and epidermal appendages, based on the structure of the stalk, head and cuticle.…”

Two new narrow endemic species of Microlicia (Melastomataceae, Lavoisiereae) from Serra do Porco Gordo, Bahia, Brazil

“…was obtained from Woodgyer and Lughadha (1995), and Almeda and Pacifico (2018), respectively. The term 'glandular-punctate' is here used to describe surfaces with gland-tipped trichomes on peduncles too short to be seen with a 40× magnification stereoscope (Carmo et al 2019). Seed measurements were made with a Mitutoya digimatic caliper.…”