Part 15

Creamy Cinquefoil Drymocallis arguta

Plate 25, fig. 6

The flowers of the Creamy Cinquefoil vary from pale cream to a pure yellow. They grow on erect stems 6 in.-4 ft. tall and blossom in early summer. They are widely distributed on prairies, plains, meadows and hillsides at 3000-12000 ft.

ROSE FAMILY

1 Wild Rose: Rosa acicularis 2 Gold Cup, Potentilla: Potentilla gracilis 3 Golden Avens: Sieversia turbinata 4 Pink Plumes: Sieversia ciliata 5 Shrubby Cinquefoil: Dasyphora fruticosa 6 Creamy Cinquefoil: Drymocallis arguta]

Shrubby Cinquefoil Dasyphora fruticosa

Plate 25, fig. 5

The Cinquefoils receive this name from the French and it refers to the five-parted leaves. The Shrubby Cinquefoil has yellow blossoms on erect shrubby stems that form good-sized bushes, or may be only a few inches tall at high elevations. They occur in meadows, along brooks and on gravel-slides at 6000-12000 ft., and bear flowers all summer.

PEA FAMILY

Golden Banner Thermopsis montana

Plate 27, fig. 1

The bright yellow flowers of the Golden Banner occur in open spikes on plants 1-3 ft. high, and bloom in late spring. They may be found in meadows at 3000-11000 ft. The plants are supposed to poison stock, and several cases of the poisoning of children who have eaten the seeds are also reported.

Silvery Lupine Lupinus argenteus

Plate 27, fig. 2

The Silvery Lupine, so named on account of the foliage, has blue to purple flowers arranged in open spikes which bloom in early summer. The plants are somewhat spreading and bush-like and grow 1-3 ft. high on prairies and in meadows at 5000-9000 ft.

Prairie Clover Petalostemon purpureus

Plate 27, fig. 3

The Prairie Clover bears tiny rose-pink to purple blossoms in small but crowded heads. An albino form is occasionally found. The stems grow 6 in.-3 ft. tall on plains and prairies at 4000-7000 ft. and the flowers bloom all summer.

PEA FAMILY

1 Golden Banner: Thermopsis montana 2 Silvery Lupine: Lupinus argenteus 3 Prairie Clover: Petalostemon purpureus 4 Wild Sweet Pea: Lathyrus ornatus 5 Purple Vetch: Vicia americana]

Wild Sweet Pea Lathyrus ornatus

Plate 27, fig. 4

The flowers of the Wild Sweet Pea are purple and white and blossom in the spring and early summer. The stems are low, 4-12 in., and occur on plains and prairies at 4000-8000 ft.

Purple Vetch Vicia americana

Plate 27, fig. 5

The Purple Vetch bears blue to purple flowers in loose clusters on climbing or scrambling stems 1-1/2-3-1/2 ft. long. They bloom in spring and early summer and may be found on prairies and in rich river valleys at 4000-10000 ft.

Loco Aragalus Lamberti

Plate 28, fig. 1