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TRICHOSTOMUM PERICHÆTIALE.
Trichostonmm caule erecto ramoso, foliis lanceolatis te-
nuiter acuminatis, periehætialibus longe vaginatis, seta
elongata, capsula oblonga. ( T a b . LXXIII.)
H ab. In sinu Du sk y Bay dicto, apud Novarn Zeelandiam.
D . Menzies, 1791.
Caules sesquipollicares, cæspitosi, erecti, ramosi. Folia obscure
sed luteo-viridia, undique imbricata, erecto-patentia, lanceolata,
tenuiter acuminata, subcanaliculata, nervo ad apicem
usque attingente percursa. Perichcetialia circa setam arete
convoluta, ex/, breviora, omnia oblonga, nervosa, nervo in acumen
longum angustum desinente. Capsula oblongo-cylindracea.
Operculum, calyptra atque peristomium desunt.
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It is only from the close analogy of this plant to Trichostomum
vaginalum, figured at tab. 64, that I am induced to place it in
that genus; for not only are my specimens destitute of a perfect
peristome, but also of the calyptra and operculum. So nearly
indeed are the two species allied that an inexperienced eye might,
on their first aspect, judge them to be the same. In the subject
of the present plate the leaves when carefully examined will be
found to be never involute at their margins, also to be much
longer, and very gradually acuminated ; and the latter character
is remarkable in the perichætial leaves.
F ig .], plant, nat. size. Fig. 2, 2, leaves. Fig. 3, perichætium.
Fig. 4, perichætial leaf. Fig. 5, capsule.—magn.