LT:
"Hypnum rugosum Linn., Turner, Smith, Web. et Mohr. - scorpioides Schultz et alin. autor., In pratis paludosis-turfosis Megapolitanae copiose fructib. cum Hypno trifario, 1799 zuerst von mir bei Malchin aufgenommen, Musci Frond, assioc. F. IV. a. 193. [two rows of text which I cannot decipher] H. Stereodon lycopodioides Bryol. Univ.", in herb. Bridel
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Lectotype designated by:
Hedenäs, L. 1989. The genera Scorpidium and Hamatocaulis, gen. nov., in northern Europe. Lindbergia 15: 33–34.