Wind Swept Trees on North Side, the last below the Snow line.
The writer has a list of about three hundred and sixty species from the Mountain. It includes only flowering plants and ferns. There are more than twenty type species named from the Mountain, not a few of which are found nowhere else. Its geographical position makes it the boundary between the arctic plants from the North and the plants of Oregon and California from the South. Its great altitude has a wonderful effect on plant life. This is seen in the trees at timber line, where snow rests upon them for months. Their prostrate trunks and gnarled branches give ample testimony to their extreme struggle for existence. Where the ordinary plants cease to exist the snowy protococcus holds undisputed sway on the extensive snow fields. This is a small one-celled microscopic plant having a blood red color in one stage of its existence. Even in the crater, on the warm rocks of the rim, will be found three or four mosses—I have noted one there which is not found anywhere else—several lichens, and at least one liverwort.
Lupines.
