FAMILIES OF PLANTS 103 
In addition to the above, Phlox donglasii and P. sabina have been 
reported as occurring in the park. 
Polemonium or Jacob’s ladder ( Polemonium ).—Plants with alternate, 
pinnate leaves and medium-sized, mostly blue flowers. Five species 
have been identified in the park and may be distinguished as follows : 
1. Stamens hairy at the base. Leaflets 
mostly less than 25. 2. 
1. Stamens not hairy at the base. Leaf¬ 
lets more than 25. 4. 
2. Stems tall, leafy, and solitary. Pol¬ 
emonium occidentale. 
2. Stems low, in tufts, sparsely leafy. 3. 
3. Corolla blue with a white tube. 
Polemonium pulcherrimum. 
3. Corolla entirely blue. Polemonium 
haydenii. 
4. Corolla about an inch long. Leaflets 
30 to 40. Polemonium viseosum. 
4. Corolla about half an inch long. 
Leaflets small and very numerous. 
Polemonium confertum. 
Polemonium foliosissimum has 
also been reported in the park. 
Collomia linearis. —A plant 4 to 
12 inches high with alternate, en¬ 
tire leaves and flowers crowded in 
a headlike cluster. The corolla 
varies from lilac-purple to nearly 
white and is very slender and 
funnelform with short lobes at the 
top* Figure 80. —Polemonium. Blue. Copy- 
Navarretia intertext a. —The right, j. e. Haynes. 
somewhat hairy stems are low and rather stout and usually quite 
widely branched. The leaves are alternate and pinnately divided 
into spiny-tipped lobes. The flowers are white. 
Prickly gilia ( Gilia pungens) has stems that are woody, 4 to 12 
inches high, and very leafy. The leaves, except the lowest, are 
alternate and palmately divided into narrow lobes making them 
appear like clusters of narrow leaves. The flowers vary from rosy 
to white or yellowish but are usually pale rose color. 
Gilia harhnessii has the leaves divided or lobed in much the same 
way but they are opposite, the stems are not woody, and the flowers 
are white. 
Threadflower gilia ( Gilia micrantha) has entire leaves Avhich are 
alternate, and the flowers are white or pale pink or even violet. The 
petals are about as long as the calyx. 
