POLEMONIACEAE. (Phlox Family.)
Phlox diffusa Bentham.
A prostrate plant with acerose leaves, when in bloom forming dense masses of pale blue. Common at 5,500 to 6,500 feet altitude, in rocky soil.
Gilia gracilis (Douglas) Hooker.
Growing on an old moraine along Carbon Glacier, Flett.
Gilia nuttallii Gray.
A white-flowered species found by Rev. E. C. Smith in 1890 somewhere on the southwest slopes of the mountain.
Collomia debilis (Watson) Greene.
Not rare in talus at the base of basalt cliffs on the east side of the mountain at 7,000 feet altitude.
Collomia heterophylla Hooker.
Found by Mr. Gorman on the gravelly banks of the Nisqually at Longmire Springs; also by Flett; a common lowland plant.
Polemonium humile Roemer & Schultes.
A handsome plant with pinnate leaves and corymbs of pale blue flowers. Common on the rocks at 5,000 to 6,000 feet altitude.
Polemonium elegans Greene.
(P. bicolor Greenman.)
Similar to the preceding, but smaller and very glandular, the blue flowers having a large yellow center. Rather rare in pumice at 7,500 feet elevation.
Polemonium viscosum pilosum Greenman.
Very much like the preceding plant. Discovered by Allen on the Goat Mountains, No. 261.
GENTIANACEAE. (Gentian Family.)