Calycadenia truncata
| Calycadenia truncata | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Calycadenia |
| Species: | C. truncata |
| Binomial name | |
| Calycadenia truncata DC. | |
Calycadenia truncata is a species of flowering plant in the daisy family known by the common name Oregon western rosinweed. It is native to Oregon and northern and central California, where is a common plant in several types of habitats. This is an annual herb producing an erect stem, reddish in color, which may exceed a meter in height. The leaves are linear in shape and up to 10 centimeters long. The inflorescence bears one or more flower heads at separate nodes, surrounded by short bracts tipped with resin glands. The hairy flower heads have a center of many purple-tipped disc florets as well a few yellow ray florets. The fruit is an achene.