Epidermal micromorphology and venation patterns of Microlicieae (Melastomataceae) leaves: Looking for new characters for the taxonomy of this neotropical tribe
| Autor: | Luiz Antonio de Souza, Patricia Gonçalves Sbais, Amanda Aparecida Oliveira do Carmo, Raísa Gonçales-Silva, Karina Fidanza, Ricardo Pacifico |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Appendage Ecology Phylogenetic tree biology Melastomataceae food and beverages Plant Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Trichome Sclereid Genus Botany Taxonomy (biology) Clade Ecology Evolution Behavior and Systematics 010606 plant biology & botany |
| Zdroj: | Flora. 261:151494 |
| ISSN: | 0367-2530 |
| DOI: | 10.1016/j.flora.2019.151494 |
| Popis: | Species belonging to the family Melastomataceae are typically recognized by their leaves with acrodromous venation exhibiting a wide variety of trichomes and epidermal appendages. The tribe Microlicieae is one of the major clades in this family and its intergeneric delimitation is still imprecise. We analyzed the epidermal micromorphology and venation patterns of 25 Microlicieae species. The type and distribution of epidermal appendages can be useful characteristics for species delimitation in Microlicieae. The acrodromous venation was found to be constant in the tribe and the number of primary veins was correlated with leaf size. The genus Lavoisiera was more constant in having a smooth epidermis, acrodromous venation with one primary vein, and sclereids at the veinlets. The genera Trembleya and Microlicia were highly variable with respect to the epidermis of the leaves. The investigated characteristics can be explored in a phylogenetic context and could be useful for future taxonomic investigations of Microlicieae. |
| Databáze: | OpenAIRE |
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