Rare Plant Identifiers
Latin Name: Isoetes tenella
Common Names: spiny-spore quillwort
Designations: State Presumed Extirpated (Ohio), State Species of Concern (Rhode Island)
Visit Isoetes tenella on the USDA PLANTS Database by clicking HERE.
Visit Bolboschoenus maritimus on the USDA PLANTS Database by clicking HERE.
Description of results: Isoetes was always eventually out-competed by Bolboschoenus but Bolboschoenus was most competitive under wet (47% soil saturation for 5 minutes per hour), flooded (100% soil saturation, soil surface kept under 6cm of water) conditions; competitive advantaged was measured as the ratio of production of Isoetes in a mixture verses a monoculture (Rhazi et al. 2009).
Rhazi, M., Grillas, P., Rhazi, L., Charpentier, A., and Medail, F. 2009. Competition in microcosm between a clonal plant species (Bolboschoenus maritimus) and a rare quillwort (Isoetes setacea) for Medeteranean temporary pools of southern France. Hydrobiologia 634:115-124.