Calycadenia villosa
| Calycadenia villosa | |
|---|---|
 | |
| herbarium specimen | |
| Conservation status | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Calycadenia |
| Species: | C. villosa |
| Binomial name | |
| Calycadenia villosa DC. | |
Calycadenia villosa is a species of flowering plant in the daisy family known by the common name dwarf western rosinweed. It is endemic to central California, where it is known from a limited distribution in the Central Coast Ranges from southern Monterey County to northern San Luis Obispo County.[1] There are perhaps 16 occurrences.[2] This is an annual herb producing a very hairy erect stem approaching 40 centimeters in maximum height. The leaves are linear in shape and up to 5 centimeters long. The inflorescence is made up of clusters of flower heads surrounded by gland-tipped bracts. Each flower head is a hairless bunch of small disc florets and 1 to 4 white to pink ray florets. Each ray floret has three lobes, the middle lobe being narrowest. The fruit is an achene; those developing from disc florets bear a pappus of scales.