New article for Trees and Shrubs Online.
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'Gaultheria marticorenae' from the website Trees and Shrubs Online (treesandshrubsonline.
A cursory glance through the Bean’s entries under the genus Pernettya is sufficient to reveal the rather murky state of ‘pernettya’ taxonomy when he was writing. Since then, not only has the entire genus has been sunk into Gaultheria, but much of the infraspecific complexity (with which Bean gallantly grappled) has been smoothed over. This species, treated by Bean as Pernettya angustifolia, gives a sense of the problems he faced. His text is reproduced below, adapted to update the nomenclature.
A full, revised treatment of the genus Gaultheria will be provided when funding is available: if you would like to sponsor the work please write to editor@treesandshrubsonline.org
This ‘pernettya’ was described by Lindley in 1840 from plants raised from Chilean seed (Bot. Reg., Vol. 26, t. 63). He did not compare it with G. mucronata (syn. Pernettya mucronata) from which it differs obviously in the shortness or virtual absence of the terminal spine. Some of the specimens in the Kew Herbarium originally referred to Pernettya angustifolia belong to Gaultheria myrsinoidies (syn. P. prostrata subsp. pentlandii). Others agree with G. mucronata but have narrowly elliptic leaves. Some appear to be intermediate and might be hybrids, as G. marticorenae itself possibly is. The Chilean ‘pernettyas’ occurring from the latitude of Chiloe island northward appear to be very variable and are in need of further study.