Magnoliophyta

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Concerning the structure of caoutchouc
H. F. Lueders

American Journal of Science August 1893, s3-46 (272) 135-137; DOI: https://doi.org/10.2475/ajs.s3-46.272.135
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The poplars of North America
Sereno Watson

American Journal of Science February 1878, s3-15 (86) 135-136; DOI: https://doi.org/10.2475/ajs.s3-15.86.135
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The heather (Calluna vulgaris) a native of the United States
Edward S. Rand

American Journal of Science January 1862, s2-33 (97) 22-27; DOI: https://doi.org/10.2475/ajs.s2-33.97.22

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