According to Nicander, sea-weed is also a theriac.181 There are numerous varieties of it, as already182 stated; one, for instance, with an elongated leaf, another red, another again with a broader leaf, and another crisped. The most esteemed kind of all is that which grows off the shores of Crete, upon the rocks there, close to the ground: it being used also for dyeing wool, as it has the property183 of so fixing the colours as never to allow of their being washed out. Nicander recommends it to be taken with wine.