George Engelmann : botanical notebook 59 : Isoetes - Engelmann, George,
https://www.biodiversitylibrary.org/bibliography/145636
Keywords: (George Dexter); |(George Washington); |1805-1877|1805-1886|1809-1884|1817-1886|1817-1893|1822-1882|1822-1893|1831-1904|1840-1913|1850-1910|Boott; William; |Botanical illustration|Braun; Alexander; |Butler; G. D|Canby; William Marriott; |Correspondence|Engelmann; George; |Hall; Elihu; |Isoetaceae|Isoetes|Letterman; George W|North America|Plant collecting|Plants|Spruce; Richard; |Tuckerman; Edward; |Vasey; George; |