Constraints on recruitment of a rare serpentine seep endemic, Cirsium fontinale var. campylon (Mt. Hamilton thistle)
I am conducting an autecological study to examine environmental and biological constraints on the recruitment of the rare endemic Mt. Hamilton thistle (Cirsium fontinale var. campylon; CNPS List 1B, Federal Species of Concern) a perennial plant restricted to serpentine seeps in Alameda, Santa Clara and Stanislaus Counties.
|Janell Hillman at one of her sites.|
|One of the experimental populations surrounded by serpentine grassland.|
|Dispersal of the thistle. The pappus falls off almost immediately and seeds mainly end up beneath the parent.|
|Transplants at transition to grassland site.|
|Overview of riparian streams where Mt. Hamilton Thistle populations are restricted.|
|Janell setting up transplants.|