The carduus[1] has leaves and a stem covered with a prickly
down; the same is the case, too, with the acorna,[2] the leucacanthos,[3] the chalceos,[4] the cnecos,[5] the polyacanthos,[6] the
onopyxos,[7] the helxine,[8] and the scolymos;[9] the chamæleon,[10]
however, has no prickles upon the leaves. There is, however,
this difference among these plants, that some of them have
numerous stems and branches, such as the carduus, for instance; while others, again, have a single stem and no branches,
the cnecos, for example. Some, again, such as the erynge,[11]
are prickly at the head only; and some blossom in the summer,
the tetralix and the helxine, for instance. The scolymos
blossoms late, and remains a considerable period in flower:
the acorna being distinguished only for its red colour and its
unctuous juice. The atractylis would be similar in every
respect to the last, were it not that it is somewhat whiter,
and produces a juice the colour of blood, a circumstance to
which it owes the name of "phonos,"[12] given to it by some.
The scolymos, which belongs to the thistle[13] genus, differs from the rest of them in the circumstance that the root of it is boiled and eaten. It is a singular fact that this genus of plants bears blossoms, buds, and fruit the whole of the summer through, without any interruption: when the leaf is dried, the prickles lose their pungency. The helxine is a plant but rarely seen, and in some countries only. It throws out leaves at the root, from the middle of which there is a protuberance in the shape of an apple, covered with leaves of its own: the head of it contains a thick juice, of a sweet flavour, the name given to which is "acanthice mastiche."[14]
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