Structural Anatomy of Papilionaceae (Fabaceae) and Its Importance in Plant Taxonomy: A Review
Keywords:
Papilionaceae, Fabaceae, plant anatomy, leaf structure, stem anatomy, taxonomyAbstract
Papilionaceae (subfamily Papilionoideae) represents the largest and most diverse lineage within the family Fabaceae, comprising numerous economically and ecologically important species. Anatomical investigations of vegetative organs provide valuable diagnostic characters that contribute to plant taxonomy and phylogenetic interpretation. The present review synthesizes published literature on leaf and stem anatomical characteristics of Papilionaceae species with emphasis on their systematic significance. Leaves generally exhibit dorsiventral anatomy characterized by a well-developed palisade layer, loosely arranged spongy mesophyll, and collateral vascular bundles surrounded by bundle sheath cells. Epidermal features such as stomatal type, trichome morphology, and cuticular patterns show considerable interspecific variation. Stem anatomy typically displays a dicotyledonous organization with epidermis, cortex, vascular bundles arranged in a ring, and central pith, with secondary growth observed in woody taxa. Comparative analysis of 40 representative species reveals that anatomical characters such as stomatal type, trichome distribution, vascular bundle arrangement, and crystal deposition serve as reliable taxonomic markers. Integration of anatomical data with molecular phylogenetic studies enhances our understanding of evolutionary relationships within Papilionoideae. The review highlights the continuing importance of classical plant anatomy in systematic botany and emphasizes its complementary role in modern phylogenomic studies.
Downloads
References
1. Ahmed N, et al (2020) Anatomical features of medicinal legumes, Journal of Herbal Science 14: 89–97
2. Ali S, et al (2021) Structural diversity of trichomes in Fabaceae leaves, Plant Biology Reports 15: 121–129
3. Choi IS, Cardoso D, de Queiroz LP, de Lima HC, Lee C, Ruhlman TA, Jansen RK, Wojciechowski MF (2022) Highly resolved papilionoid legume phylogeny based on plastid phylogenomics, Frontiers in Plant Science 13: 823190
4. Das S, et al (2023) Anatomical adaptations of legumes in arid habitats, Ecological Botany 77: 145–156
5. Fernandes J, et al (2023) Comparative anatomy of legume stems and leaves, Botanical Studies 64(1): 1–10
6. Fortunato R, et al (2021) Comparative leaf anatomy of Eriosema species (Fabaceae), Flora 282: 151–160
7. Gupta R, Sharma P (2024) Structural diversity of vascular bundles in Papilionaceae, Plant Structure Research 21: 45–60
8. Joshi V, Deshmukh R (2024) Comparative anatomy of leaves of Crotalaria species, Indian Journal of Plant Sciences 13: 45–55
9. Kaur J, Singh H (2021) Anatomical studies of forage legumes, Agricultural Botany Journal 9: 112–120
10. Khan M, Ali A (2021) Comparative anatomy of Dalbergia species, Forestry Botany Journal 15: 98–106
11. Kumar A, Singh P (2021) Micromorphology and taxonomy of papilionoid legumes, Botanical Review 87: 212–229
12. Kumar V, Patel R (2024) Role of anatomical characters in legume taxonomy, International Journal of Plant Sciences 19: 120–131
13. Leme FM, Scremin-Dias E (2020) Leaf anatomical adaptations in amphibious species of Aeschynomene, Aquatic Botany 165: 103–110
14. Mehta A, Shah R (2023) Stem anatomical variation in legumes of India, Plant Anatomy Research 18: 77–85
15. Ninkaew S, et al (2023) Leaf epidermal characteristics of selected Crotalaria species, Tropical Natural History Journal 23: 85–96
16. Nwachukwu CU, et al (2020) Stem anatomy of selected species of Indigofera, Journal of Applied Botany 94: 95–102
17. Patel D, Verma A (2023) Stem anatomical diversity in medicinal legumes, Plant Science Today 10: 220–228
18. Qin Q, Dong Y, Chen J, et al (2025) Comparative analysis of chloroplast genomes reveals molecular evolution and phylogenetic relationships within Papilionoideae of Fabaceae, BMC Plant Biology 25: 157
19. Rao P, Patil S (2022) Pharmacognostic and anatomical studies of medicinal Fabaceae plants, Journal of Medicinal Plants Research 16: 89–98
20. Rodrigues CG, Gomes SM (2026) Comparative floral development and anatomy reveal distinct origins of the gynophore in Meso-Papilionoideae, Plants 15(3): 426
21. Sharma R, Gupta M (2022) Anatomical diversity in leaves of leguminous plants, Plant Systematics Journal 45: 310–325
22. Silva AM, Santos FM, Oliveira PR (2023) Anatomical and histochemical studies of vegetative organs of Stylosanthes capitata, Flora 307: 152382 .
23. Singh B, et al (2022) Mesophyll structure and stomatal diversity in Fabaceae leaves, Journal of Plant Biology 65: 310–320 .
24. Singh R, Kumar S, Sharma P (2024) Comparative leaf anatomy of selected Papilionaceae species, Journal of Plant Sciences 12: 45–53 .
25. Yadav S, Tripathi A (2022) Taxonomic importance of leaf epidermal characters in Fabaceae, Plant Taxonomy Journal 11: 67–78.
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2026 Authors
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license unless indicated otherwise in a credit line to the material. If the material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/ licenses/by/4.0/
