Last Updated: July 1, 2026
Research Themes
My research encompasses a broad range of studies on succulent plants, with a primary focus on plant physiology, seed biology, mathematical modeling, and taxonomy. Integrating long-term horticultural observation with formal botanical science, I aim to document and analyze the diverse biological characteristics of succulents. This approach contributes to a deeper understanding of their classification, functional systems, and their evolutionary plasticity within the broader field of botanical research.
I am delighted to share that my latest paper has been accepted for publication.
Kagawa, T. (2026). Evidence of gynodioecy in Portulacaria pygmaea: Fruit production on predominantly staminate plants. South African Journal of Botany, 191, 495–499.
https://doi.org/10.1016/j.sajb.2026.02.050
Kagawa, T. (2025). Dual environmental thresholds and indications of reversible growth-mode regulation in Adenium dhofarense under Dhofar’s hyper-seasonal climate. Jxiv.
https://doi.org/10.51094/jxiv.2234
Kagawa, T. (2025). Cryptic Hermaphroditic Flowering in Male Plants of Dioecious Portulacaria pygmaea (Didiereaceae): Evidence from Rapid Fruit Development and Pollen Fertility. Zenodo.https://doi.org/10.5281/zenodo.17579964
This portal is maintained by Takuya Kagawa, an independent researcher specializing in succulent plants. It serves as an academic platform to present ongoing research activities to the international community, with an emphasis on transparency, reproducibility, and continuity with historical botanical records. The site aims to provide a reliable reference point for future publications and scholarly exchange.