There are several species of Saccoloma in tropical America that have been mistaken for the common lowland species S. inaequale pictured here. Saccoloma inaequale is most easily distinguished from the others by the nearly glabrous medium brown petioles, and relatively light colored and thin textured lamina. It is found in lowland tropical forests. In Costa Rica, the name S. moranii was applied to these plants for some time, but that name is a later synonym.
About The Author
I am particularly interested in macroevolutionary patterns and characters that diagnose large clades of ferns and lycophytes. My field work is centered in Mexico, Colombia, and Papua New Guinea. I am based in the Pringle Herbarium (VT) at the University of Vermont. If you have any ferns that you want identified, please send them to me!
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Happy #FernFriday! Some ferns like Dryopteris intermedia keep their leaves over the winter. In the current issue of AFJ, Jack Tessier found that plants with broken fronds had a 1-week delay in spring growth compared to plants with unbroken, bent leaves https://doi.org/10.1640/0002-8444-111.2.1102
Looking forward to this talk about global patterns of #fern diversity featuring work done by @westo_fernnerd @frondley_fern & @MichaelSundue https://twitter.com/Biogeography/status/1386764561555107841
In 2 days: Our next Funk Lecture on Biogeography, with Michael Sundue: 'Using Large-Scale Integrative Analyses to Understand Global Patterns of Fern Diversity'. Join us if you can by registering at: https://us02web.zoom.us/webinar/register/9316173113622/WN_WmDpWSQZR-GO5GuHgaH-CQ #FunkLecture #biogeography Wed April 28th, Noon EDT