Day 286: There is a new name on the list of ferns known to occur in Mount Rainier National Park as of yesterday: Aspidotis densa. Known commonly as "Indian's Dream" or "Cliff Brake," the species had not been observed previously in the Park or in Pierce County, although it had been reported from Lewis County to the south and King County to the north. Only two specimens were observed at this site. However, we did not make a thorough search on this occasion. That will be forthcoming. The fern can be recognized by its blackish-brown stems and delicately lacy fronds. Fertile blades with thinner segments are held erect and exhibit more pinnae (divisions) than sterile foliage, a phenomenon called dimorphism or "having two forms." You would be correct in assuming that the plant was discovered by Team Biota during a recent outing, and it took several phone calls and numerous emails to confirm its identity. I am surprised that my jubilant "YES!!!" didn't register on the UW's seismometer.
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