Scrub lupine (Lupinus aridorum) is found on white sand scrub in limited area and just on two ridge systems in central Florida: the Mount Dora Ridge and the Winter Haven Ridge. Both areas are densely urbanized and have reduced the species to primarily one small, viable population on each ridge. All seeds produced from one of the last population on the Mount Dora Ridge were collected as part of a rare plant rescue effort. A subset of this ‘fresh’ collection was submitted as part of the CPC-IMLS project, along with seeds from the ‘original’ accession collected from that same population. A subset of the ‘fresh’ seeds were dissected to test for percent intact, and 100% were intact and expected to be viable.
In 2021, CPC contracted Bok Tower Gardens to recollect seed from a population currently held in long term orthodox seed storage as part of an IMLS-funded seed longevity experiment. The National Laboratory for Genetic Resources Preservation will evaluate how germination tested viability and RNA Integrity of seed lots decline over time in storage.
A taxon with a very narrow range and low abundance: the Florida Natural Areas Inventory currently contains 35 occurrence records in its database, all located in Orange, Polk, and Osceola counties, Florida. Most of the occurrences are in degraded, roadside situations. There is great pressure on the habitat from unrestricted land development for housing and recreation.
Principal causes of decline include habitat destruction, trampling by grazers and off-road vehicles, conversion of high pineland and scrub for agricultural purposes (principally citrus groves), and for commercial, residential, and recreational purposes, m
Only 15 populations remain with fewer than 1000 plants (FNAI 2000). Most of the populations are on private land. It is found at 10 sites on the Mt. Dora Ridge in Orange and 6 sites on the Winter Haven Ridge in Polk County (FNAI 2000). In 1986, the total population was estimated to be fewer than 350 plants in 11 current populations.
Jack Stout of University of Central Florida monitors this species.
Charba has been studying populations in Orange County by examining dead plants and by culturing parasites found on these plants.
No active management known to be in progress.
Determine current distribution.
Protect and enhance existing populations.
Monitor existing populations of L. aridorum.
Educate the public.
Prevent degradation of existing habitat.
Restore areas to suitable habitat.
Conduct habitat-level research projects.
Monitor habitat/ecological processes.
Germination and propagation techniques and soil seedbank studies.
Conduct research on life history characteristics.
Maintain plants in ex situ collections.
Be the first to post an update!