Proteaceae
Euplassa

Euplassa taubertiana K.Schum.

First published in Beibl. Bot. Jahrb. Syst. 67: 28 (1902)
This species is accepted
The native range of this species is Brazil (Rio de Janeiro). It is a tree and grows primarily in the wet tropical biome.

Descriptions

Plana, V. & Prance, G. (2004). A Synopsis of the South American Genus Euplassa (Proteaceae). Kew Bulletin, 59(1), 27-45. doi:10.2307/4111072

Type
Brazil. Rio de Janeiro, Floresta da Tijuca et Jacarepagua, Glaziou 17745. (holotype B! [photo. F!, GH neg. 11780]; isotypes, F!, LG).
Morphology General Habit
Small tree
Morphology Reproductive morphology Inflorescences
This species is characterised by the very long petiolules (approximately 1/3 the length of the lamina), sessile flowers, light ferruginous or yellowish indumentum, and subrhombiform leaves with dentate or weakly serrate margins
Morphology Reproductive morphology Flowers
Flowers orange.
Distribution
Endemic to Rio de Janeiro, found only in the forest of Tijuca and Jacarepagua (type locality taken from Glaziou (1905), where he lists collection localities).
Ecology
Forest.
Phenology
Flowering in November to December.
Note
This species is quite distinct, but is closely related to E. itatiaiae with which it shares subrhombiform to broadly lanceolate leaflet shape, the long petiolules measuring at least '/Y the length of the lamina, distinct hypogynous nectaries and a glabrous ovary. However, E. laubertiana differs from E. itatiaiae in the sessile flowers, light ferruginous to yellowish indumentum and the absence of mucronate teeth on the leaflet margins although the margins are still remotely dentate to serrate. The leaflets are much more rhombiform in this species and they lack the shininess of those in E. iltaiaiae. The yellowish colour of the indumentum, the sessile flowers and distinct hypogynous nectaries also indicate a possible relationship to E. organensis.
[KBu]

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: threatened. Confidence: low confidence
[AERP]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/112640633/113310303

Conservation
EN - endangered
[IUCN]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Bulletin

    • Kew Bulletin
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2025. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0