Abstract
Sempervivum guillemotii (Crassulaceae) was discovered and described by Martial Lamotte in the French Alps, but apart from Rouy & Camus, it was never cited in the French floras. Burnat later rediscovered it, but unaware of Lamotte’s name, he published it under the name S. adenotrichum; this name, too, did not find its way into the floras until the recent Flora Gallica. The author rehabilitates this name and designates a neotype for the name S. guillemotii and a lectotype for its synonym S. adenotrichum.
Highlights
The genus Sempervivum L. (Crassulaceae) has been the subject of a great many studies, in the nineteenth century, and a lot of taxa have been described especially in Austria, France, and Switzerland
One of the most prolific and important authors of the period was Martial Lamotte (1820-1883), a French botanist who discovered and published a great many new species (Dayrat 2003). These include Sempervivum guillemotii Lamotte, the object of this study, which he described in detail
S. guillemotii has been very rarely mentioned in the Euro-Mediterranean floras contexts and in France
Summary
The genus Sempervivum L. (Crassulaceae) has been the subject of a great many studies, in the nineteenth century, and a lot of taxa have been described especially in Austria, France, and Switzerland. One of the most prolific and important authors of the period was Martial Lamotte (1820-1883), a French botanist who discovered and published a great many new species (Dayrat 2003). These include Sempervivum guillemotii Lamotte, the object of this study, which he described in detail. Rouy & Camus (1901) treated this taxon as a ‘forme’ of S. arvernense Lecoq & Lamotte and, as a result, it was ignored by all subsequent Floras. No reference is made of this name in any major French Flora until Kerguelen (1999), who cites it as a synonym of S. tectorum L. subsp. To give stability and certainty to the name application, typifications of the name S. guillemotii and its synonym S. adenotrichum are provided
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