Now, in both the sedges and grasses, the blossom has a common structure,
though undeveloped in the sedges, but composed always of groups of double
husks, which have mostly a spinous process in the centre, sometimes
projecting into a long awn or beard; this central process being
characteristic also of the ordinary leaves of mosses, as if a moss were
a kind of ear of corn made permanently green on the ground, and with a
new and distinct fructification. But the rushes differ wholly from the
sedge and grass in their blossom structure. It is not a dual cluster,
but a twice threefold one, so far separate from the grasses, and so
closely connected with a higher order of plants, that I think you will
find it convenient to group the rushes at once with that higher order,
to which, if you will for the present let me give the general name of
Drosidae, or dew-plants, it will enable me to say what I have to say of
them much more shortly and clearly.
80. These Drosidae, then, are plants delighting in interrupted moisture--
or at certain seasons--into dry ground. They are not among water-plants,
but the signs of water resting among dry places.
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