| Texto completo | |
| Autor(es): |
Firetti-Leggieri, Fabiana
[1, 2]
;
Lohmann, Lucia G.
[1]
;
Semir, Joao
[2]
;
Demarco, Diego
[1]
;
Castro, Marilia M.
[2]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Sao Paulo, Inst Biociencias, Dept Bot, BR-05508090 Sao Paulo - Brazil
[2] Univ Estadual Campinas, Dept Bot, Inst Biol, BR-13083970 Campinas, SP - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | NORDIC JOURNAL OF BOTANY; v. 32, n. 5, p. 620-631, OCT 2014. |
| Citações Web of Science: | 3 |
| Resumo | |
Anemopaegma is a monophyletic lineage included in the tribe Bignonieae. The genus is taxonomically problematic, especially in the Anemopaegma arvense species complex, a group whose taxa have been delimited on the basis of leaf external morphology. Here we study the leaf anatomy of all three species and nine varieties currently included in this species complex (A. acutifolium DC., A. arvense (Vell.) Stellf. ex de Souza and A. glaucum Mart. ex DC.) in search for additional characters that may help circumscribe taxa within this group. For comparison, this study also investigated the leaf anatomy of two species that are morphologically similar to representatives of the species complex but currently placed outside it (A. album Mart. ex DC. and A. scabriusculum Mart. ex DC.). All taxa were analyzed using standard anatomical procedures and light microscopy. In addition, leaves of A. acutifolium and Anemopaegma album were analyzed with scanning electron microscopy (SEM). Overall, stomata position, composition of the vascular system of the petiole, midrib, lateral veins and margin constitution represented the most important anatomical features for the recognition of the species and varieties. The study also demonstrated that A. scabriusculum presents leaf anatomical traits that differ from those encountered in species of the Anemopaegma arvense complex, corroborating earlier anatomical and molecular phylogenetic results and indicating that A. scabriusculum is indeed best placed outside the A. arvense species complex. Leaf anatomical data also support the synonymization of some varieties of A. mirandum with A. arvense, as well as varieties of A. glaucum into this species. (AU) | |
| Processo FAPESP: | 11/50859-2 - Sistemática da tribo Bignonieae (Bignoniaceae) |
| Beneficiário: | Lúcia Garcez Lohmann |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |