A Synopsis of the British Mosses / Containing Descriptions of All the Genera and Species, (With Localities of the Rarer Ones) Found in Great Britain and Ireland, Based Upon Wilson's "Bryologia Britannica," Schimper's "Synopsis," Etc.

by Charles C. P. Hobkirk

63. CATASCOPIUM. Brid.

380. C. nigritum. Brid. St. 1in. or more (Wilson says 2–6in. or more), radiculose; l. lanceolate acute, margin reflexed entire, nerved nearly to apex; upper ones largest; caps. small globose, dark-coloured or black, cernuous; lid small conical.

Moist alpine rocks, &c.

Wilson says “fruits March (?)” My specimen from Fife is August.