Muscr Exorict.—WMenziesiani. 
TRICHOSTOMUM PERICHARTIALE. 
Trichostomum caule erecto ramoso, foliis lanceolatis te- 
nuiter acuminatis, pericheetialibus longe vaginatis, seta 
elongata, capsula oblonga. (Tas. LXXIII.) 
Haz. In sinu Dusky Bay dicto, apud Novam Zeelandiam. 
D. Menxies, 1791. 
Caules sesquipollicares, caspitosi, erecti, ramosi. Folia obscure 
sed luteo-viridia, undique imbricata, erecto-patentia, lanceo- 
lata, tenuiter acuminata, subcanaliculata, nervo ad apicem 
usque attingente percursa. Pericheetialia circa setam arcte 
convoluta, ext. breviora, omnia oblonga, nervosa, neryo in acu- 
men longum angustum desinente. Capsuda oblongo-cylindra- 
cea, Operculum, calyptra atque peristomium desunt. 
It is only from the close analogy of this plant to Trichostomum 
vaginatum, figured at tal, 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 perichetial leaves. 
Fig.1, plant, nat. size. Fig. 2, 2, leaves. Fig. 3, perichetium. 
Fig. 4, perichetial leaf. Fig. 5, capsule,—smagn. 
