[Columbia River Gorge Wildflower Reports]

Currently Blooming Wildflowers in the Columbia River Gorge

Columbia Hills

July 4, 1998

Wildflower bloom in the eastern Columbia River Gorge is starting to become somewhat limited to areas with moisture, either riparian habitats, those on north-facing slopes, or at higher altitudes on the ridgetops. Grasses are becoming browner with interesting seed heads, and many of the wildflowers now have beautiful seed pods.

Those plants that bloom during the summer, need dry conditions and probably lots of sunshine. They typically are hairy plants, often silver or silvery-blue in color to help retard moisture loss and reflect sunlight, hence lowering their temperature.

Flower bloom should again begin to rise in late summer into fall as the shrubby members of the sunflower family begin to bloom. Those areas with sagebrush or goldenweed, or rabbitbrush will be ablaze with yellow at that time!

[Directions to the Columbia Hills/ Dalles Mt. Area]

1. Heart-leaf Buckwheat (yellow forms): Eriogonum compositum var. compositum

2. Tall Buckwheat: Eriogonum elatum

3. Strict Buckwheat: Eriogonum strictum var. proliferum- Just commencing bloom.

4. Jim Hill Mustard: Sisymbrium altissimum

5. California Poppy: Eschscholzia californica

6. Mock Orange: Philadelphus lewisii

7. Himalayan Blackberry: Rubus discolor

8. Western Burnet: Sanguisorba occidentalis

9. Prairie Lupine: Lupinus lepidus var. aridus

10. Velvet Lupine: Lupinus leucophyllus

11. Alfalfa: Medicago sativa

12. White Sweet Clover: Melilotus alba

13. Common St. John's Wort: Hypericum perfoliatum

14. Tall Annual Willow Herb: Epilobium brachycarpum (formerly Epilobium paniculatum var. paniculatum)

15. Flytrap Dogbane: Apocynum androsaemifolium

16. Narrow-leaf Milkweed: Asclepias fascicularis

17. Field Morning Glory: Convolvulus arvensis

18. Large-flowered Collomia: Collomia grandiflora

19. Moth Mullein: Verbascum blattaria

20. Yarrow: Achillea millefolium

21. Large-flowered Agoseris: Agoseris grandiflora

22. Bachelor's Button: Centaurea cyanus

23. Chicory: Cichorum intybus

24. Wavy-leaf Thistle: Cirsium undulatum

25. Woolly Sunflower: Eriophyllum lanatum var. integrifolium

26. Blanket Flower: Gaillardia aristata

27. Columbia River Gumweed: Grindelia columbiana


Also seen along State Road #14 west of the Columbia Hills:

1. Fiddle-grass: Epilobium hirsutum

2. Dalmatian Toad-flax: Linaria dalmatica

3. Cut-leaf Penstemon: Penstemon richardsonii var. richardsonii

4. Tumble Knapweed: Centaurea diffusa- Pesky weed! Carefully pull them!

5. Yellow Star Thistle: Centaurea solstitialis- Pesky weed! Very carefully pull them (they're stickery!)

6. Common Sunflower: Helianthus annuus

7. Northern Wyethia: Wyethia amplexicaulis


Paul Slichter