DR. Е. ВОВСЕЗЕХ ON FUCUS SPIRALIS, LINNÉ. 115 
distance from the apex of the thallus. It is rather like the swellings we 
commonly find in Fucus inflatus *. 
Prof. Sauvageau reproaches the modern algologists that they more often 
quote the figure of Oeder, instead of that of Lamarck in * Tableau encyclo- 
pédique,’ vol. iii. pl. 880. But it may be said (1) that this figure is much 
more recent than Oeder’s, and also (2) that it is given as a type of the genus 
Fucus without any text. For the rest I agree willingly with Prof. Sauvageau 
that we have here a rather good figure of Fucus spiralis, L. Anda few 
years later (1808) we also get a good description of it, as Poiret, who 
continued the publication of Lamarck’s * Encyclopédie méthodique, quoting 
Lamarck’s figure, gives in Tome 8 (p. 358) of the work a very good 
description of this species, which he considers as distinct from Fucus 
vesiculosus. Goodenough and Woodward also have in ‘Observations on 
British Fuci ^ (Trans. Linn. Soc. iii. 1795, р. 47) Fucus spiralis as a distinet 
species and give a good description of it. 
In ‘English Botany, vol. xxiv. 1807, Smith has given a good figure 
and description of Fucus spiralis (pl. 1685), and regarding its habitat he 
writes : * Growing about high-water mark, and always in such situations as 
to be exposed to the air after every tide.” Furthermore, he here deseribes the 
specimens in Linne’s herbarium: “ In one of the Linnæan specimens indeed 
some of these extremities are more oblong, but they are still obtuse and 
rounded at the ends," evidently pointing to the above mentioned, non-ty pical, 
specimen. 
Turner, in * Fuci, vol. ii., London 1809, on the contrary, considers Fucus 
spiralis as а variety of Fucus vesiculosus, agreeing with Roth’s conception in 
* Flora Germanica.’ 
Lyngbye also takes the same view in * Tentamen Hydrophytologiæ, p. 3, 
Hauniæ, 1819. 
In ‘Nereis Britannica, р. 6, tab. 5, 1816, Stackhouse has а good 
description of Fucus spiralis, which he considers as a species ; 16 is accompanied 
by a large and a small pretty good figure. In the same paper Stackhouse 
has also deseribed the species Fucus Sherardi, which judging from his figure 
is nothing else than a sterile specimen of Fucus spiralis. 
In this way Fucus spiralis has been treated sometimes as a species, some- 
times as a variety of Fucus vesiculosus, or as a synonym of Fucus vesiculosus 
(Greville (1830) and Harvey (1846-51)). In the middle of the century there 
appeared "l'huret's important treatise, “Recherches sur les zoospores des 
Algues et les anthéridies des Cryptogames ” (Ann. Se. nat., sér. 5, vol. xvi. 
* Prof. Sauvageau also mentions such swellings in * Note sur les Algues marines du 
Golfe de Gascogne," p. 22, and also Thuret and Bornet mention them in “Etudes 
Phycologiques," p. 40. 
