Wood Poppy (Stylophorum diphyllum)

= Wood Poppy (Stylophorum diphyllum) =
Wood Poppy, also commonly known as Celandine Poppy is a native perennial herb that grows in woodlands in Ontario, among other places. With its bright yellow, poppy-like flowers it's an in demand plant for Native Plant aficionados. With distinctive lobed leaves and a preference for shaded habitats, Wood Poppy adds a burst of colour to the under-story of the woodlands. 
This plant is not common, partially due to logging and forest clearance. As Stylophorum diphyllum requires certain lighting, too much sunlight through the forest canopy is responsible for the threat to this, and other under-story plants.Wikipedia As a result Wood Poppy is endangered according to both COSEWIC (Committee on the Status of Endangered Wildlife in Canada)Recovery Strategy for Wood Poppy and NatureServeNatureServe Explorer Since it is present only in Ontario within Canada, the next stage of endangerment would be Extirpation.
== CAUTION: Invasive Look-Alike ==
Greater celandine (Chelidonium Majus) - Similar European Plant. For details on spotting the difference, Consult bplant.org
== CAUTION: Invasive Threat ==
Invasive Garlic Mustard is also a big threat to the survival of Stylophorum diphyllum.NC State Extension
== Sowing and Reproduction ==
There is no gender requirement to grow Wood Poppy. The plant is bisexual and pollination is all it needs.
Method
No information found on depth or method.
Cold Stratification
Unusually, Stylophorum diphyllum requires a warm period of moist stratification before the cold period of winter. If sowing outside this means it would be sown in spring.Prairie Moon Nursery As a result it is thought to need double dormancy, but if sown in spring will grow by next spring. If sowing in containers, treat like a winter-sow plant, but start in spring instead.
Other sources claim they need only three months cold moist stratification and then warmth.
== Harvesting ==
Collect the bristly capsules when they are yellow, or just before they begin to split open. Make sure that the seeds are almost black, if not they are not ready to be picked.Wild Plants From Seed
== Storage ==
Make sure the capsules are not dried for more than a day or two. Pop open capsules that have not opened and 
remove chaff. Seeds must not be allowed to dry out and must be sown fresh or stored moist in vermiculite or sand, until time of sowing.
== Toxicity ==
Strength: Low severity.
Toxic to:
* Humans: Toxic on ingestion, but mild severity. Can also cause contact issues on skin or eyes. PictureThis Plant AI
* Dogs and Cats: Unknown, but given human toxicity it could have worse effects on animals.
* Livestock: Unknown, but given human toxicity it could have worse effects on animals.
* Other: Mammals ignore this plant and it rarely suffers insect damage, meaning it may be toxic to these as well.