Míl l n1/
of that state of it named Trichostomum funale by ScHW,®:-
GRICHEN. In this supposition I considered myself subsequently
mistaken; but the opinion of my learned friend Professor
H o o k e r again led me to my first conclusion. We had
neither of us, however, examined the peristome, which proved,
after all, to be that of a true Grimmia. The above detail will
contribute to shew, how strongly with the fructification of a
Grimmia, the habit of a Trichostomwn is united; the two
genera are indeed brought nearer than ever to each other in
this plant, which may be said to terminate Grimmia on the
one hand, while Trichostomwn fwialc commences the genus
to which it belongs on the other. Among the British species,
the peristome of Grimmia trichophylla approaches nearest to
that of Gr. pulvinata, and its leaves to those of Gr. ovata.
In the same excursion in which we found the present Moss
between Dunkeld and Blair in Athole, it will gratify the British
hryologist to learn, that Dr H o o k e r , Mr W a l k e r
A r n o t t and myself, added Dicranum Schreberianum to our
Flora, and discovered Weissia nigrita in tolerable plenty, as
well as that great rarity Weissia splachnoides; added to which,
Splachnum tenue grew in profusion. A few weeks before,
Mr W a l k e r A r n o t t had added to the British list of Musci
Hypnum dimorphwn of B r i d e l .
Fig. 1. Grimmia trichophylla, nat. size. Fig. 2. A single plant. Fig. 3. Theca.
Fig. 4. An upper leaf. Fig. 5. A lower leaf. Fig. 6. Calyptra. Fig. 7.
Portion of the peristome.—All hut Fig. 1. more or less magnified.
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