[The Milkweed Family East of the Cascade Mountains of Oregon and Washington]

Davis' Milkweed, Humboldt Milkweed, Pallid Milkweed, Purple Milkweed

Asclepias cryptoceras ssp. davisii

Synonyms:Asclepias cryptoceras, Asclepias cryptoceras var. davisii, Asclepias davisii

Pallid Milkweed, Humboldt Milkweed: Asclepias cryptoceras (Synonyms: Asclepias cryptoceras ssp. davisii, Asclepias cryptoceras var. davisii, Asclepias davisii)

The photo above shows pallid milkweed blooming on gravelly slopes of a vernal stream at the Sheep Rock Unit Picnic Area of the John Day Fossil Beds National Monument..........May 15, 2010.

Flower of Pallid Milkweed, Humboldt Milkweed: Asclepias cryptoceras (Synonyms: Asclepias cryptoceras ssp. davisii, Asclepias cryptoceras var. davisii, Asclepias davisii) - Calyx of Pallid Milkweed, Humboldt Milkweed: Asclepias cryptoceras (Synonyms: Asclepias cryptoceras ssp. davisii, Asclepias cryptoceras var. davisii, Asclepias davisii) - Flower of Pallid Milkweed, Humboldt Milkweed: Asclepias cryptoceras (Synonyms: Asclepias cryptoceras ssp. davisii, Asclepias cryptoceras var. davisii, Asclepias davisii)

Opposite leaves of Pallid Milkweed, Humboldt Milkweed: Asclepias cryptoceras (Synonyms: Asclepias cryptoceras ssp. davisii, Asclepias cryptoceras var. davisii, Asclepias davisii) - Inflorescence of Pallid Milkweed, Humboldt Milkweed: Asclepias cryptoceras (Synonyms: Asclepias cryptoceras ssp. davisii, Asclepias cryptoceras var. davisii, Asclepias davisii)

Additional close-up photos of the flowers and leaves of pallid milkweed blooming on gravelly slopes of a vernal stream at the Sheep Rock Unit Picnic Area of the John Day Fossil Beds National Monument..........May 15, 2010.

Pallid Milkweed, Humboldt Milkweed: Asclepias cryptoceras (Synonyms: Asclepias cryptoceras ssp. davisii, Asclepias cryptoceras var. davisii, Asclepias davisii)

The photo above shows the sprawling branches with paired, glaucous leaves of pallid milkweed. Photographed at the Sheep Rock Unit Picnic Area of the John Day Fossil Beds National Monument..........May 28, 2007.

Seed pod of Pallid Milkweed, Humboldt Milkweed: Asclepias cryptoceras (Synonyms: Asclepias cryptoceras ssp. davisii, Asclepias cryptoceras var. davisii, Asclepias davisii) - Pod of Pallid Milkweed, Humboldt Milkweed: Asclepias cryptoceras (Synonyms: Asclepias cryptoceras ssp. davisii, Asclepias cryptoceras var. davisii, Asclepias davisii)

Close-up images of the ovate fruit and paired, glaucous leaves of pallid milkweed. Photographed at the Sheep Rock Unit Picnic Area of the John Day Fossil Beds National Monument..........May 28, 2007.
Paul Slichter