Pleradenophora bilocularis
| Pleradenophora bilocularis | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Euphorbiaceae |
| Genus: | Pleradenophora |
| Species: | P. bilocularis
|
| Binomial name | |
| Pleradenophora bilocularis Esser & A.L. Melo, 2018
| |
Pleradenophora bilocularis, commonly known as the arrow poison plant, is a species of shrub in the Euphorbiaceae (spurge family).[1]
Description
Pleradenophora bilocularis is a medium sized flowering shrub with alternate simple smooth leaves, flowering from March to November with greenish or green flowers.[2]
It's sap was used as a poison to coat arrowheads and was wildly feared.[3]
This shrub is also serves as a host plant for a large native silk moth Eupackardia calleta.[3]
Range and habitat
Pleradenophora bilocularis is most commonly found in upper bajadas, canyons, hills, and mountains in Southwestern Arizona, US, and in Mexico, south of the Guaymas region in Sonora, and in both Baja California states.[3]
References
- ^ "arrow poison plant (Pleradenophora bilocularis)". iNaturalist. Retrieved 16 December 2025.
- ^ "Pleradenophora bilocularis". cabezaprieta. Retrieved 16 December 2025.
- ^ a b c "Felger, R.S., S. Rutman, and N.C. Taylor. 2015. Ajo Peak to Tinajas Altas: A flora of southwestern Arizona. Part 13. Eudicots: Euphorbiaceae. Phytoneuron 2015-26: 1-65. Published 15 April 2015. SSN 2153 733X page55 (6.7 MB pdf)" (PDF). cabezaprieta.org. Retrieved 16 December 2025.