There is another kind of marine shrub, known by the name of “bryon;”1015 it has the leaf of the lettuce, only that it is of a more wrinkled appearance; it grows nearer land, too, than the last. Far out at sea we find a fir-tree1016 and an oak,1017 each a cubit in height; shells are found adhering to their branches. It is said that this sea-oak is used for dyeing wool, and that some of them even bear acorns1018 in the sea, a fact which has been ascertained by shipwrecked persons and divers. There are other marine trees also of remarkable size, found in the vicinity of Sicyon; the sea-vine,1019 indeed, grows everywhere. The sea-fig1020 is destitute of leaves, and the bark is red. There is a palm-tree1021 also in the number of the sea-shrubs. Beyond the columns of Hercules there is a sea-shrub that grows with the leaf of the leek, and others with those of the carrot,1022 and of thyme. Both of these last, when thrown up by the tide, are transformed1023 into pumice.