Polytrichum juniperinum.

Botanical name: 

Syn.—Hair Cap Moss.
P. E.—Whole plant.
N. O.—Polytrichaceae.
N. H.—United States.

Properties: Diuretic.

Use: In dropsy, especially cardiac dropsy, irritation of the bladder, difficult micturation during pregnancy. Excess of uric and phosphoric acid and gravel. It causes a copious flow of urine, promotes absorption, relieves pain of urinary calculi and aids in preventing the formation of same. Can be used in febrile and inflammatory diseases.

The Materia Medica and Clinical Therapeutics, 1905, was written by Fred J. Petersen, M.D.