Name requested: Collema corniculatumLichenologist 16 (3): 229. Mycotaxon 86: 349, 350, 353, 354. 108: 10, 20.
Homotypic synonym: Leptogium corniculatumLichenologist 16 (3): 228, 229, 229. Lichens of North America null: 401, 403.
Heterotypic synonym: Leptogium palmatumLichenologist 3 (3): 319. Lichens of North America null: 403. Mycologia 11 (6): 303. Mycotaxon 34 (1): 42.