Botannical illustration of Cycnoches guttulatum in Panama.
Smithsonian Institution
Published in 1925
Image from page 473 of the 1924 <i>Annual Report of the Board of Regents of the Smithsonian Institution</i> <br><a rel="nofollow" class="external free" href="https://archive.org/stream/annualreportofbo1924smit#page/n472/mode/1up">https://archive.org/stream/annualreportofbo1924smit#page/n472/mode/1up</a>