Tetrapteron graciliflorum

Hill sun cup, a reference photo
Photo: iNaturalist user: joergmlpts · CC BY 4.0 (licence)

Tetrapteron graciliflorum is a species of evening primrose known by the common name hill suncup. It is native to Oregon and California, where it grows in several habitat types, often on clay soils. It is an annual herb generally with no stem but producing an upright, nodding inflorescence. It features a cluster of narrow leaves, each measuring one to ten centimeters in length. The flowers are adorned with bright yellow petals, ranging from half a centimeter to two centimeters in length. The fruit is a leathery capsule, less than a centimeter long, containing four chambers with bumpy brown seeds.

From Wikipedia, under CC BY-SA 4.0.

Is it poisonous?

We have no record of Hill sun cup being toxic, poisonous or venomous. That is not proof that it is safe. Never eat, touch or handle a wild plant, mushroom or animal on the strength of an identification; ask someone qualified.

Easily confused with

Classification

Kingdom
Plantae
Phylum
Tracheophyta
Class
Magnoliopsida
Order
Myrtales
Family
Onagraceae
Species
Tetrapteron graciliflorum

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