2840
CINCLIDIUM stygium.
Dark Cupola Moss.
CR YPTOGAMIA Musci.
Gen. Char. Peristome double, outer of 16 indexed
teeth : inner, a dome-shaped membrane with 16
lateral apertures opposite to the outer teeth.
Calyptra dimidiate. ■ Fruit-stalk terminal.
Spec. Char..........
Syn. Cinclidium stygium. Schwaegr. Suppl, v. I.
P. 2. 85. t. 67. Web. et Mohr. Bot. Tasch. 484.
Bridel. Br. Un. v. 1. 715.
Mnium stygium. Bruch et Schimper, Bryol. Eur.
Mnium. 17. t. 1.
T h i s very interesting addition to our British mosses
was discovered in June, 1836, by Mr. John Nowell of Scout,
near Todmorden, in a swamp not far from Malham Tarn,
Yorkshire, in considerable plenty: from his specimens,
kindly sent to us, the figure is now given.
It grows in broad densely matted patches. Stem from 3
to 6 inches long and more with innovations, covered in almost
every part with purplish closely interwoven radical
fibres. Leaves spreading, broadly obovate and obtuse, decurrent
at {he base, entire and thickened in the margin, somewhat
pointed at the apex by the protrusion of the dark-
coloured nerve, lower ones of a dull purplish-brown, upper
ones green, nearly resembling those of Bryum punctatum.
Fruit-stalk either solitary or in pairs, from 2 to 3 inches
long, dark red, curved at the summit, where it is thickened
into a spurious apophysis. Capsule pendulous, oblong.