. Contributions from the Botanical Laboratory, vol. 7. Botany; Botany. 22 JOHN W. HARSHBERGER Pentstemon fruticosus (Pursh) Greene. This decumbent, shrubby species of beard-tongue grows 2-4 decimeters tall. The specimens collected on the screes above Lake Agnes have branches about 2-3 millimeters thick, which bend downward and then curve upward to the leafy, flower- and fruit-bearing shoots (Fig. 2). It clearly belongs to the scree-trailers, and so does Pentstemon Wilcoxii Rydb. collected on the screes at Many Glaciers, Glacier National Park, Montana on July 2, 1926. 3. Scree-stretchers {Schut
. Contributions from the Botanical Laboratory, vol. 7. Botany; Botany. 22 JOHN W. HARSHBERGER Pentstemon fruticosus (Pursh) Greene. This decumbent, shrubby species of beard-tongue grows 2-4 decimeters tall. The specimens collected on the screes above Lake Agnes have branches about 2-3 millimeters thick, which bend downward and then curve upward to the leafy, flower- and fruit-bearing shoots (Fig. 2). It clearly belongs to the scree-trailers, and so does Pentstemon Wilcoxii Rydb. collected on the screes at Many Glaciers, Glacier National Park, Montana on July 2, 1926. 3. Scree-stretchers {Schuttstrecker). The scree plants of this group develop a few upright shoots which work up through the rocks and stones, in other words they stretch up to the surface. The following five plants belong to this class. Zygadenus elegans Pursh. The bulbs of this monocoty- ledonous herb are hidden usually beyond reach in some rock cranny, or cavity. The linear leaves and scapes reach the surface where they form clumps with the raceme of greenish- white or pale greenish flowers in evidence in Glacier National Park on July 2, 1926, when specimens were collected. Anemone glohosa Nutt. The common western anemone is a perennial plant with buried rootstalks from which a few basal, deeply dissected leaves arise. It was found on rock slides in Glacier National Park. Its hairy, one-flowered, fruiting stem was 20 centimeters tall. Lupinus Lyallii Gray was found among loose rocks on Mt. Rainier at 7,000 feet in full flower on July 10, 1926. It formed dense clumps of stems arising from a deeply penetrat- ing primary root. In form it is a scree-stretcher, although with large plants it might become a scree-coverer and belong to the next group. Its palmately compound leaves with 7 or more small leaflets are silky with oppressed, silvery hairs. Its blue-purple flowers are in abundance on a single plant. Oxytropis splendens Dougl. This purple-flowered loco weed is covered with long, loose, silky hairs. I
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