Pollen and nutlet micromorphology in Phlomis armeniaca Willd. and P. sieheana Rech.f. (Lamiaceae)
DOI:
https://doi.org/10.3329/bjpt.v32i2.86666Keywords:
Jerusalem sage; Labiatae; Mintfamily; Palynomorphology; Seed.Abstract
Phlomis sieheana and P. armeniaca species are known as two close taxa that are confused with each other when firstly observed in their natural habitats. In the current investigation, the morphological features of Phlomis sieheana and P. armeniaca belonging to the Lamiaceae family have been revised and their anatomical, palynological and micromorphological features have been presented. The pollen grains of the studied species are monad, isopolar, and radially symmetrical. The pollen shape of P. sieheana is subprolate, while P. armeniaca is prolate-spheroidal. Also, exine sculpture was observed as reticulate-perforate in both species. However, the types of pollen aperture of the species are determined differently. P. sieheana has pollen grains with tricolpate apertures, while P. armeniaca has both tricolpate and syncolpate ones. Nutlet micromorphology contains characters that support the differentiation of species. The nutlet coat is rugulate in Phlomis sieheana and reticulate in P. armeniaca. The characteristics of anatomical, palynological and micro morphological in P. sieheana and P. armeniaca are found valuable supporting the separation of these species.
Bangladesh J. Plant Taxon. 32(2): 161-169, 2025 (December)
Downloads
0
0
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2025 Bangladesh Association of Plant Taxonomists
This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright on any research article is transferred in full to Bangladesh Association of Plant Taxonomists upon publication in Bangladesh Journal of Plant Taxonomy. The copyright transfer includes the right to reproduce and distribute the article in any form of reproduction (printing, electronic media or any other form).
Articles in the Bangladesh Journal of Plant Taxonomy are Open Access articles published under the Creative Commons CC BY License Creative Commons Attribution 4.0 International License.
This license permits use, distribution and reproduction in any medium, provided the original work is properly cited. It is author's responsibility to obtain the permission from appropriate authority if figures are reused from a previously published document.
