Posted by: Sandy Steinman | May 23, 2017

Oregon Wildflowers: Willamette Valley 5/20/2017

Oregon Wildflowers has two new posts for the Willamette Valley

Horse Rock Ridge  looks wonderful! Due to the prolonged winter, the bloom appears to be 1-2 weeks later than usual. The biggest example are the abundantly blooming Oregon Fawn Lily (Erythronium oregonum) and Henderson`s Shooting Star (Dodecatheon hendersonii), which are generally wrapping up by this date.

Blooming in the forest: Fairyslipper (Calypso bulbosa), Oregon Wood Sorrel (Oxalis oregana), Woods Strawberry (Fragaria vesca), Candy Flower (Claytonia sibirica), and one last Western Trillium which will probably be finished by the time you read this report.

The meadows and hillsides are covered with profuse amounts of Western Buttercup (Ranunculus occidentalis), Yellow Monkeyflower (Mimulus guttatus), and Rosy Plectritis (Plectritis congesta). In addition to the abovementioned Erythronium and Dodecatheon, other flowers currently blooming include: Field Madder (Sherardia arvensis), White-Top Clover (Trifolium variegatum), Harsh Paintbrush (Castilleja hispida), Trailing Blackberry (Rubus ursinus), Nuttall`s Saxifrage (Saxifraga nuttallii), Western Saxifrage (Saxifraga occidentalis), Blue Flax (Linum lewisii), Small-Flowered Blue-Eyed Mary (Collinsia parviflora), Narrowleaf Paintbrush (Castilleja attenuata), Cut-leaf Daisy (Erigeron compositus), Meadow Death Camas (Zigadenus venenosus) and Menzies` Larkspur (Delphinium menziesii) just starting, Chocolate Lily (Fritillaria affinis), Prairie Star (Lithophragma parviflorum), Purple Broomrape (Orobanche uniflora var. purpurea) at higher elevations, and patches of Deltoid Balsamroot (Balsamorhiza deltoidea) in the higher meadows.

Personal favorites such as Tolmie`s Cat`s Ears (Calochortus tolmiei), Slender Clarkia (Clarkia gracilis), and Olympic Onion (Allium crenulatum) have not started yet.

Mt. Pisgah Arboretum The wonderful mid-spring Common Camas (Camassia quamash) display is nearly finished for the season, but there are still plenty of other wildflowers blooming in the Arboretum, including: Western Buttercup (Ranunculus occidentalis var. occidentalis), Candyflower (Claytonia sibirica), lots of Poison Larkspur (Delphinium trolliifolium)and Pacific Bleeding Heart (Dicentra formosa) especially along the Water Garden Trail, Bigroot (Marah oreganus), Fringe Cup (Tellima grandiflora), False Solomon`s-Seal (Maianthemum racemosum), Western Meadowrue (Thalictrum occidentale), Thimbleberry (Rubus parviflorus), Inside-Out Flower (Vancouveria hexandra) near the north end of the Adkison Bridge.

Blooming along the South Boundary Trail: Oregon Iris (Iris tenax), Large-flowered Nemophila (Nemophila menziesii var. atomaria), Wild Strawberry (Fragaria virginiana var. platypetala), Western Snake Root (Sanicula crassicaulis), Cat`s Ear Lily (Calochortus tolmiei), Forktooth Ookow (Dichelostemma congestum), Western Buttercup (Ranunculus occidentalis var. occidentalis), Candyflower (Claytonia sibirica), Menzies` Larkspur (Delphinium menziesii), Seep Monkeyflower (Mimulus guttatus) in damp/wet areas, and Slender Woodland Star (Lithophragma tenellum).

Blooming along Trail 1 to the summit: Popcorn Flower (Plagiobothrys sp.), Western Buttercup (Ranunculus occidentalis var. occidentalis), plenty of Oregon Iris (Iris tenax), Oregon Checker Mallow (Sidalcea oregana), Forktooth Ookow (Dichelostemma congestum), Miniature Lupine (Lupinus bicolor), Western Snake Root (Sanicula crassicaulis), Cat`s Ear Lily (Calochortus tolmiei), Oregon Sunshine (Eriophyllum lanatum), Nine-Leaf Lomatium (Lomatium triternatum), Bigflower Agoseris (Agoseris grandiflora), Slender Woodland Star (Lithophragma tenellum), Wild Strawberry (Fragaria virginiana var. platypetala), and a few Chocolate Lily (Fritillaria lanceolata) near the summit. Stay on the trail(s) to avoid the profuse poison oak (Toxicodendron diversilobum)


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