|Photo by Wayne Matchett, SpaceCoastWildflowers.com|
|Division:||Magnoliophyta - Flowering plants|
|Class:||Magnoliopsida – Dicotyledons|
| Linum floridanum|
|Natural range of Linum floridanum from USDA NRCS Plants Database.|
Common name: Florida yellow flax
Synonyms: L. virginianum var. floridanum Planchon; Cathartolinum floridanum (Planchon) Small; Cathartolinum macrosepalum Small
Variety: Linum floridanum (Planchon) Trelease var. chrysocarpum C.M. Rogers;
"Annual, biennial, or short lived perennial herbs with 1-several strict stems from a crown, usually branched above. Leaves cauline, opposite or alternate, entire, acute to acuminate, sessile, exstipulate. Inflorescence a panicle of racemes or cymes. Flower perfect, actinomorphic, pedicellate; sepals 5, separate or basally adnate; pistil 5-carpellate, styles 5, each carpel divided at maturity, the pistil then appearing 10-carpellate. Seeds lustrous brown, obovoid to ellipsoid." 
"Perennial with 1-several stems 3-8 dm tall, from a crown. Leaves mostly alternate, lowest often opposite, narrowly elliptic to linear, 0.8-2.5 cm long, 1-7 mm wide, acute. Pedicels 1-3 mm long. Sepals lanceolate, 2-3 mm long, acute to acuminate, entire or glandular serrate; petals yellow, 4-8 mm long. Capsule ovoid or oblate, 1.3-3 mm long. Seeds 1-1.3 mm long." 
"Leaves 0.8-5 mm wide. Branches of inflorescence ascending. Inner sepals densely glandular serrulate. Capsule ovoid, 2-3 mm long." 
This species can be found in open wiregrass seepage savannas, longleaf pine forests, and disturbed areas such as ditches.  The soils have been observed to be moist and/or dry loamy sands within well-drained uplands.  Associated species include Pinus palutris, Aristida stricta, Sarracenia, and Harperocallis. 
This species is thought to be dispersed by gravity. 
This species occurs in areas that are annually burned.  In an open wet pine savanna in Mississippi, the highest densities of flowering stalks for L. floridanum were observed one year after fire. 
Conservation and management
Cultivation and restoration
References and notes
- Radford, Albert E., Harry E. Ahles, and C. Ritchie Bell. Manual of the Vascular Flora of the Carolinas. 1964, 1968. The University of North Carolina Press. 645-6. Print.
- Florida State University Robert K. Godfrey Herbarium database. URL: http://herbarium.bio.fsu.edu. Last accessed: June 2014. Collectors: Loran C. Anderson, M. Davis, Robert K. Godfrey, R. Komarek, Cecil R. Slaughter. States and Counties: Florida: Baker, Liberty, and Wakulla. Georgia: Thomas.
- Nelson, G. PanFlora: Plant data for the eastern United States with emphasis on the Southeastern Coastal Plains, Florida, and the Florida Panhandle. www.gilnelson.com/PanFlora/ Accessed: 12 DEC 2016
- Kirkman, L. Katherine. Unpublished database of seed dispersal mode of plants found in Coastal Plain longleaf pine-grasslands of the Jones Ecological Research Center, Georgia.
- Hinman, S. E. and J. S. Brewer (2007). "Responses of two frequently-burned wet pine savannas to an extended period without fire." Journal of the Torrey Botanical Society 134: 512-526.