a. Biol. and Bot. [f. VARIET-Y + -AL.] Of or pertaining to, connected with, indicating, etc., a distinct variety of animal or plant. Opposed to specific or generic.

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1866.  Darwin, Orig. Spec. (ed. 4), ii. 59. He is at first much perplexed in determining what differences to consider as specific, and what as varietal.

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1873.  Dawson, Earth & Man, xiv. 319. The careful study of varietal forms.

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1881.  Lees, in Jrnl. Bot., X. 25. Quite sufficiently distinct to merit a varietal if not a specific name.

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1902.  Jrnl. R. Instit. Cornwall, XV. 123. No one can deny that it merits varietal rank.

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  Hence Varietally adv., in respect of varietal qualities; as a distinct variety.

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1873.  Dawson, Earth & Man, xii. 290. Not only did man exist at this time, but man not even varietally distinct from modern European races.

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1879.  Encycl. Brit., IX. 386/2. Foraminifera … which can be identified—not only generically and specifically, but even varietally.

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