Orthion subsessile (Standl.) Standl. & Steyerm.

Accumulation profile

Substrate

Ultramafic and volcanic mafic soils

Habitat

Tropical forest and secondary succession on Ni-rich substrates

Distribution

Mexico, Guatemala, Belize, Nicaragua

First reported

2024 · Navarrete Gutiérrez et al.

Verification

primary-measured

Description & ecology

Herbarium XRF foliar Ni maximum 18,700 µg g⁻¹ DW (range 450–18,700; Navarrete Gutiérrez et al. 2024, Ecol. Res. 39:879–893, doi:10.1111/1440-1703.12504).

Field-collected leaves from Chiapas reached 47,200 µg g⁻¹ Ni (mean 14,600 ± 16,800), but this single-site maximum is retained in notes only because it approaches the global foliar Ni record and awaits independent replication.

More than 90% of herbarium specimens exceeded the 1,000 µg g⁻¹ Ni threshold, interpreted by the authors as obligate hyperaccumulation.

Also reported as a Co hyperaccumulator (max 2,660 µg g⁻¹) — retained in notes only.

References

1. Navarrete Gutiérrez, D. M., Pollard, A. J., Disinger, H. P., van der Ent, A., Cathelineau, M., Pons, M.-N., Cuevas Sánchez, J. A., Gómez Hernández, T., & Echevarria, G. (2024). Nickel hyperaccumulation in Orthion and Mayanaea (Violaceae) from Mesoamerica. Ecological Research, 39, 879–893. doi:10.1111/1440-1703.12504 APA BibTeX RIS

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