found: Work cat.: Crum, H.A. Liverworts and hornworts of Michigan, 1991(class Anthocerotopsida)
found: Pritchard biology of nonvasc. plants:p. 449 (class 2: Anthocerotae: hornworts; Division Bryophyta)
found: Holmes outline of plant classification:p. 83 (Anthocerotopsida, horned liverworts or hornworts)
found: Web. 3(hornwort ... plant of the genus Ceratophyllum; plant of order Anthocerotales; Anthocerotaceae, Anthocerotales. Anthocerotes, class of plants coextensive with order Anthoceratales)
found: Stern intro. plant biology:p. 371 (class Anthocerotae, hornworts; division Bryophyta)
found: Syn. liv. org.:p. 304 (Bryophyta, Anthocerotopsida, class(=Anthocerotae), order Anthocerotales, single family Anthrocerotaceae)
found: Penguin dict. of botany(Anthocerotae, hornworts, horned liverworts, class of Bryophyta, single order Anthocerotales)
found: LC data base, 2/7/91(hornworts, anthocerotes)
found: PREMARC, 2/7/91(Anthocerotaceae)