Comprehensive Catherine Creek Plant List.
This was a quick 45 minute search just before sunset from the main parking area along the road to just north of the basalt arch.
Wallace's Spikemoss: Selaginella wallacei
Podfern: Aspidotis densa
Licorice Fern: Polypodium glycyrrhiza
Ponderosa Pine: Pinus ponderosa var. ponderosa
Big-leaf Maple: Acer macrophyllum
Oregon White Oak: Quercus garryana var. garryana
Oregon Ash: Fraxinus latifolia
* Long-anthered Woodrush: Luzula macrantha
Bristly Dog's-tail Grass: Cynosurus echinata
Medusa Head: Taeniatherum caput-medusae
Pale-anthered Glacier Lily: Erythronium grandiflorum var. pallidum - A few basal leaves seen.
Chocolate Lily: Fritillaria affinis - A few basal leaves seen.
* Grass Widows: Olsynium douglasii var. douglasii - Still fairly numerous.
Common Bastard Toad-flax: Comandra umbellata var. californica - Leafy stems beginning to extend upwards.
Bitterroot: Lewisia rediviva - Basal leaf rosettes only.
Upland Larkspur: Delphinium nuttallianum - Basal leaves only.
* Western Buttercup: Ranunculus occidentalis var. occidentalis
* Oaks Toothwort: Cardamine nuttallii
* Spring Whitlow Grass: Draba verna
* Smooth Praire Star: Lithophragma glabrum
* Peak Saxifrage: Micranthes fragosa
* Northwestern Saxifrage: Micranthes integrifolia
* Rusty-hair Saxifrage: Micranthes rufidula
Cutleaf Violet: Viola sheltonii - A few basal leaves seen.
Poison Oak: Toxicodendron diversilobum
* Columbia Desert Parsley: Lomatium columbianum
* Klickitat Desert Parsley: Lomatium klickitatense
* Butterfly-loving Desert Parsley: Lomatium papilioniferum
* Salt and Pepper: Lomatium piperi
Western Snake Root: Sanicula crassicaulis
Sierra Snake Root: Sanicula graveolens
Ball-head Waterleaf: Hydrophyllum capitatum var. thompsonii - A few beginning to bloom.
Barrett's Penstemon: Penstemon barrettiae
Bedstraw, Cleavers: Galium aparine
Yarrow: Achillea millefolium
* Gold Stars: Crocidium multicaule