Lagunaria patersonia (Andrews) G.Don

Plantae > Tracheophyta > Magnoliopsida > Malvales > Malvaceae > Lagunaria > Lagunaria patersonia

Norfolk Island hibiscus [1] Árvore-do-pó-de-macaco [2]

Nome científico publicado pela 1ª vez em:

Gen. Hist. 1: 485 (1831). [3]

Região Geográfica de Origem

Lord Howe Island and Norfolk Island (Australia) [1]

 

Estado de Conservação

Least concern on Norfolk Island and endangered on Lord Howe Island [1]

 

Estatuto na região Açores

Exotic species under cultivation [4]

 

Sobre o(s) Exemplar(es)

This specimen belongs to the original composition of this garden.

Coordinates: 37°44’38” N; 25°39’55” W
Altitude: 33 m

Morphometry:
Height (2023): 21.40 m
Diameter at breast height (2024): 64.30 cm

Phenology (2024):
Vegetative phase: III
Flowering: IV, V, VI VI                                                                                [4]

Sobre o táxon

Although it is a tree of ornamental value and suitable for planting as an alignment tree, planting it near houses should be avoided, as the hairs of the capsules cause irritation to human skin on contact. [1] For this reason, on the University Campus, some specimens located to the west, next to the houses on Rua Dr. Vitorino Nemésio, were cut down, with only the specimens planted to the east remaining. [4] On  São Miguel Island, the hairs transformed into ‘itch powder’ were used above all during Carnival [4].

The discovery and introduction of Lagunaria patersonia in Europe is due to the explorer and Lieutenant Governor of New South Wales, Colonel William Paterson, who collected seeds of this species on Norfolk Island between 1791 and 1792, and in 1792, it came into the hands of the English naturalist Joseph Banks, later (1797) officially in charge of the Royal Botanic Gardens at Kew in London. [1,5,6]

This species was first described by Henry Charles Andrews in 1803 as a species of the genus Hibiscus (H. patersonius), a genus created by Linnaeus in 1753. This same species was also described in 1804 by John Sims, who without referring to Andrews’ publication, described it as a species of the genus Laguna (L. patersonia), a genus created in 1786 by Antonio José Cavanilles. Later, in 1831, George Don, citing Andrews and Sims, transferred the species to the genus Lagunaria (created in 1828 by H.G. Reichenbach) but wrongly gave it the specific restrictive patersonii. According to the international rules of nomenclature for plants, the older specific restrictive should have been chosen: patersonius, but as the genus Lagunaria is feminine, the feminine declension should be applied to the name, making it patersonia. Although George Don’s name Lagunaria patersonii could be treated as a superfluous and illegitimate name, the name patersonii published by G. Don was corrected by taxonomists to Lagunaria patersonia, [4] and is currently the accepted name. [8]

Descrição

Tree 12 to 18 m tall, with evergreen leaves and tomentose young branches. Leaves ovate to oblong-lanceolate (7-10 cm long), sub-coriaceous and pale tomentose on the underside. The flowers are axillary and solitary, (3-5 cm), displaying a tomentose calyx and 5 recurved petals, pink to lilac. The fruits are tomentose capsules, which upon dehiscence expose the red seeds between the locular hairs. [8]

Referências

[1] ANPS (2024). Australian Native Plant Society. https://anpsa.org.au/
[2] Pereira, M.J.; Vieira, V.; Furtado, D. (eds.) (2010). O Jardim Romântico da Universidade dos Açores, ed. 1. Ponta Delgada: Universidade dos Açores, p.  57.
[3] IPNI (2024). International Plant Names Index. The Royal Botanic Gardens, Kew, Harvard University Herbaria & Libraries and Australian National Herbarium. http://www.ipni.org.
[4]  Ferreira MJ, Ponte LR, Bulhões M, Pereira MJ. (2024). Lagunaria patersonia. In: Ponta Delgada University Campus Garden. Ponta Delgada: Universidade dos Açores. https://jardim.uac.pt/en/plantae-tracheophyta-magnoliopsida-malvales-malvaceae-lagunaria-lagunaria-patersonia-2/
[5] Macmillan DS (1967). Paterson, William (1755–1810). In:  Australian Dictionary of Biography, National Centre of Biography, Australian National University, https://adb.anu.edu.au/biography/paterson-william-2541/text3455
[6] Andrews HC (1803). Hibiscus patersonius. In Botanists’ Repository, for New, and Rare Plants 4: t. 286
[5] Ferreira MJ, Ponte L, Bulhões M, Pereira MJ (2024). Lagunaria patersonia. In: O Jardim do Campus Universitário de Ponta Delgada. Ponta Delgada: Universidade dos Açores. https://jardim.uac.pt/en/plantae-tracheophyta-magnoliopsida-malvales-malvaceae-lagunaria-lagunaria-patersonia-2/
[8] POWO (2024). Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. http://www.plantsoftheworldonline.org.