Nature Notes From Crater Lake
Volume 17, 1951
Quillwort Pond
By George C. Ruhle, Park Naturalist
As might be expected from his articles
in this issue, salamanders are the chief interest in the life of Ranger-
Naturalist James Kezer. A good observer clad in hip-boots, he spent his
free time last summer in the wet, boggy spaces of the park and Oregon
Caves National Monument. The result was the addition of several aquatics
to the flora of the regions. His first find was a quillwort, Isoetes
sp., in Lower Biglow Lake above Oregon Caves. Later he found his "lost"
pond near Arant Point floored with it.
Tho it is not indicated upon park maps,
this small pond was not unnoticed in the past. There is a current story
that it was planted with fingerlings in the early thirties. Their
introduction was the signal for numbers of pelicans to visit the shallow
waters until the last fish was consumed. Former park ranger Jack Frost
said that he had heard this story in 1936. He made two trips to the pond
in 1937, never to see waterfowl of any kind on or near the water.
Permanent ponds inside the park
boundaries are rare. Because of its history, the park concluded that
this pond should bear an official name. For the purpose, I weighed the
possibilities of Isoetes, what with its Greek origin, euphony, and
dieresis, but settled instead on simple "Quillwort Pond" to propose
through channels to the Board on Geographic Names.
The plant is of interest. Its nearest
relatives are the club mosses and scouring rushes (equisetums or
horsetails). They are aquatic or marshloving, and have been traced back
in geological time to the Miocene. They are characterized by an
extremely short, corm-like stem from which grow 10 to 100 quill-shaped
leaves. The bases of the leaves are spoon-shaped, in which grow the
fruiting bodies or sporangia that are of two sizes and kinds. Larger
spherical macrospores occur in the outer leaves while numerous,
triangular microspores grow in the inner leaves. Size and sculpturing of
the spores form the important differences between species.
The park specimens were examined by Dr.
L. R. Detling of the University of Oregon who identified them as I.
braunii Durieu. He bases his conclusion on the presence of very long
papillae, almost spines, on the megaspore coat. Dr. LeRoy Abrams of
Stanford gives the range of this species as far northern, coming
southward only into Washington and Idaho. Further investigation will be
reported in a future issue.