The following Participating Institutions are custodians for this species in the CPC National Collection:
Bok Tower Gardens
The conservation of Campanula robinsiae is fully sponsored.
Glen Bupp contributed to this Plant Profile.
The Brooksville Bellflower is an annual herb first found in the Chinesgut hill area of Hernando County, Florida in 1924. Campanula robinsiae was federally listed as endangered in 1989. Since that time, regular monitoring indicates that the number of plants within populations fluctuates greatly. Brooksville Bellflower resides specifically in the transitional zone between the low and high water mark around pond edges. Fluctuations in water level have a great impact on the number of individuals witnessed in a population from year to year.
Overall, C. robinsiae is a small herbaceous annual; remaining less than 15 cm in height. The leaves are lance shaped from 5-15 mm in width, entirely to faintly toothed, with the larger leaves at the base of the plant. This makes the Brookesville Bellflower nearly half the size of the only other bellflower found in Florida, C. floridana. The majority of the flowers produced by C. robinsiae remain closed and are self pollinated. Outcrossing flowers are solitary, deep purple, 7-8 mm wide, with 1-2.5mm long sepals. Flowering is more dependent on rain levels than time of year. The seeds produced by this species are the smallest of any bellflower in North America (Shetler and Morin 1986).
Distribution & Occurrence
C. robinsiae resides specifically in wet prairies, seepage areas, and/or the transitional zone between the low and high water mark around pond edges (USFWS 1994). The occurrence of C. robinsiae seems highly dependent on ground water levels in the area.
|Hillsborough County population = 384 individuals
Two Hernando County populations total = 161 individuals
Conservation, Ecology & Research
Most of the flowers are cleistogamous. Geneflow within and between populations has not been researched.
Other ecological relationships for this species are not fully understood.
Seed morphology of North American Campanulaceae including Campanula robinsiae was examined in 1986 by Shetler and Morin and published in the Annals of the Missouri Botanical Garden.
Phylogenetic assessment and biogeographic analyses of the tribe Peracarpeae (Campanulaceae) by Zhou et al. was published in 2012. C. robinsiae was included in their phylogentic tree.
Habitat analysis and population surveys are done by Bok Tower Gardens annually.
What are the life history needs
What are the microhabitat requirements
What are the effects of severe temperature changes i.e. freezing on germination
What are the effects of fluctuating water levels on germination
What is the genetic variability within and among C. robinsiae populations