THE DISTRIBUTION OF PADINA PAVONICA 51 



Ria de Vigo: Lazaro (1889); Seoane-Camba (1957), abundant at Canido, Samil; Seoane- 

 Camba (1960), Padina/ Cladostephus communities in protected locations; Seoane-Camba (1965). 



Very few records have been traced for northern Iberia, although local habitat conditions would 

 appear frequently to be adequate. The sparse records reflect the general rarity of collections. There 

 is no precisely localised information for Guipiizcoa and none at all for Vizcaya. Santander is also 

 poorly recorded, but at least there are localised modern primary data; additional information 

 possibly exists in the herbaria of Sauvageau, Miranda, and other phycologists who have collected 

 along the north coast. Since the two original observations are nearly 70 years apart, comment on 

 continuity of populations and on phenology is not possible. Oviedo shows the same pattern as 

 Santander, except that its most recent original record (1931) is much older; it may be supported 

 by material, but that has not been checked since Miranda was on the whole accurate in his 

 statements. Lugo and La Corufia are recorded only in primary early statements by Sauvageau. 

 Pontevedra, essentially the Ria de Vigo, has been recorded in original observations on a few 

 occasions; apart from the early record by Lazaro, original floristic and ecological observations by 

 Seoane-Camba, including characterisation of an association or subassociation, are important. 

 Padina is widespread and abundant as a characterising element associated with Enteromorpha 

 ramulosa and Cladostephus verticillatus, amongst others, in 'protected locations'. Surprisingly, 

 the nearby and similar Ria de Arosa, Ria de Pontevedra, and La Guardia (Desembocadura del 

 Mino) were not recorded as locations for Padina during work by Seoane-Camba (1957). The 

 many records for Portugal and Atlantic southern Spain suggest that, for La Coruna and 

 Pontevedra, Padina should not be difficult to detect in suitable ecological conditions. 



The Ria de Vigo plants show aspects of similarity to Padina behaviour in the Mediterranean. 

 A Padina pavonica-Cladostephus verticillatus association was described in the latter (Feldmann, 

 1937) along the western coast of Golfe du Lion, from Collioure to the Franco-Spanish border at 

 Cap Cerbere. The habitat conditions for this synthetic association are horizontal rocks covered 

 with sediment (sand or sand-mud), in shallow depths (MSL to 4-5 m deep) or in deep pools, in 

 strongly insolated calm locations. Seoane-Camba and Feldmann were thus concerned with essenti- 

 ally the same ecological grouping in the same ecological conditions. On the south coast of England, 

 Padina occurs in conditions closely similar to those described here (although not found even as 

 deep as 5 m into the infralittoral); not uncommonly the alga also is found growing alongside 

 Cladostephus, but that grouping is neither sufficiently consistent nor adequately characteristic of 

 the flora in which it occurs to be termed an 'association', at least in our experience. According to 

 Ardre (1971), the lower horizon of the littoral and the infralittoral in moderate exposure or shelter 

 along the southern Portuguese coast is similar; 'particularly common' species listed included both 

 Padina pavonica and Cladostephus verticillatus, neither more particularly characteristic of the flora 

 in these conditions than any other species in the list. 



Portugal 



Douro Lit oral: 



Foz do Douro: Hauck (1889); Ardre (1970). 



Estremadura : 



Sesimbra: Palminha (1951), Fundeadouro; Ginsburg-Ardre (1963); Ardre (1970), quoting 

 Palminha; Ardre (1970), 26.vi.1961, 21.iv.1963, 5.X.1963. 



[Portinho Da] Arrdbida: Palminha (1958); Ardre (1970); Ardre (1970), 22.iv.1963. 



Near Cetobrigam [? Setubal]: Welwitsch, F., Phycotheca lusitanica, no. 149, 18| (BM). 



Troia, near Setubal: Rodrigues (1963), citing Welwitsch, s/n, iii/1850 (in COI and LISU, 

 P46430); s/n, iii-iv.1850, in LISU, P46432; Ardre (1970), citing P46432, cf. last entry. 



Setubal: Henriques (1881); Rodrigues (1963) and Ardre (1970), both citing Lami, s/n, x.1932 

 (COI); Ardre (1970). 



