Sequoia

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Do varieties wear out, or tend to wear out?
Asa Bray

American Journal of Science February 1875, s3-9 (50) 109-114; DOI: https://doi.org/10.2475/ajs.s3-9.50.109
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Address before the American Association at its recent meeting in Dubuque, Iowa
Asa Gray

American Journal of Science October 1872, s3-4 (22) 282-298; DOI: https://doi.org/10.2475/ajs.s3-4.22.282