Identity
Unique IDELEMENT_GLOBAL.2.958375
Element CodePMLIL150B0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderAsparagales
FamilyAmaryllidaceae
GenusHymenocallis
Concept ReferenceFlora of North America Editorial Committee (FNA). 2002a. Flora of North America north of Mexico. Vol. 26. Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York. xxvi + 723 pp.
Taxonomic CommentsFlora of North America Editorial Committee (2002) treats Hymenocallis rotata as endemic to Florida and with the synonym H. floridana, and H. crassifolia is a distinct species occurring mostly north of Florida (North Carolina, South Carolina, Alabama), and just barely getting into north Florida. Flora of North America Editorial Committee (2002) also recognizes H. tridentata as a distinct species, endemic to Florida. Weakley (2023) follows Flora of North America Editorial Committee (2002). In contrast, Kartesz (1994, 1999) put H. crassifolia and H. tridentata into H. floridana and treated H. rotata as distinct.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2025-10-16
Change Date2025-10-16
Edition Date2025-10-16
Edition AuthorsRosner-Katz and Soteropoulos (2025)
Threat ImpactUnknown
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences21 - 80
Rank ReasonsHymenocallis rotata is a perennial herb found in the margins of spring-run streams and associated ditches and lakes. It is endemic to the southeastern United States where it can be found from the Florida Panhandle and northern peninsular Florida southward to central peninsular Florida. There are over 40 estimated occurrences. Little is known about threats or trends. Monitoring of populations should be conducted to improve our understanding of reproduction, plant abundance, threats, and trends, as well as continuing conservation measures to protect the species.
Range Extent CommentsHymenocallis rotata is endemic to the southeastern United States where it can be found from the Florida Panhandle (Wakulla County) and northern peninsular Florida (Alachua, Columbia, and Duval counties) southward to central peninsular Florida (FNA 2002, Weakley and the Southeastern Flora Team 2023). Range extent was estimated to be over 50,000 square kilometers using herbarium specimens and photo-based observations documented between 1994 and 2025 (GBIF 2025, iNaturalist 2025, RARECAT 2025, SEINet 2025).
Occurrences CommentsBy applying a 1 km separation distance to herbarium specimens and photo-based observations documented between 1994 and 2025, it is estimated that there are over 40 occurrences rangewide (GBIF 2025, iNaturalist 2025, RARECAT 2025, SEINet 2025).
Threat Impact CommentsAlthough threats are not widely documented, this species is potentially threatened by development, hydrological alteration, invasive species, and other threats in some places.