A fourth kind of tithymalos1203 is known by the additional name of “helioscopios.”1204 It has leaves like those of purslain,1205 and some four or five small branches standing out from the root, of a red colour, half a foot in height, and full of juice. This plant grows in the vicinity of towns: the seed is white, and pigeons1206 are remarkably fond of it. It receives its additional name of “helioscopios” from the fact that the heads of it turn1207 with the sun. Taken in doses of half an acetabulum, in oxymel, it carries off bile by stool: in other respects it has the same properties as the characias, above-mentioned.