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TRICHOSTOMUM VAGINATUM.
Trichostomum caule erecto ramoso, foliis late lanceolatis
lateribus involutis, periehætialibus longe vaginatis,
seta elongata, capsula oblonga, operculo subulato.
( T a b . LXIV.)
H a b . In insula Otaheite, mare Pacifico. D . Menzies, 1792.
Caules biunciales, erecti, cæspitosi, valde ramosi. Folia obscure
viridia, undique imbricata, patula, late lanceolata, concava,
integerrima, lateribus insigniter involutis, nervo ad apicem fere
attingente percursa. Ferichætialia circa setam convoluta,
e x t. breviora, apice recurva, subnervosa, int. longissima, acuminata,
enervia, vaginata. Seta uncialis, flavescens. Capsula
oblonga, cylindracea. Operculum subulatum, capsula
subæque longum. Calyptra angusta, mitriformis, basi integra.
Peristomium IQ-ieniaXma, dentibus angustis, flavo-rufesceiiti-
bus, transversim striatis, ad basin usque fissis.
Trichostomum vaginalum has much of the habit of Tortula
tortuosa, and still more of that of Tr, polyphyHum; but from
both it differs in the shape of the leaves and in the curious perichætium.
Fig. 1, plants nat. size. Fig. 2, leaves. Fig. 3, perichætium.
Fig. 4, 5, leaves of ditto. Fig. 6, calyptra, Fig. 7, capsule.
Fig. 8, teeth of peristome.—magn.