Evolvulus grisebachii

Evolvulus grisebachii
Growing in open canopy pine rockland habitat
Conservation status
Imperiled  (NatureServe) [1]
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Solanales
Family:	Convolvulaceae
Genus:	Evolvulus
Species:	E. grisebachii
Binomial name
Evolvulus grisebachii Peter [2]

Evolvulus grisebachii, commonly referred to as Grisebach's dwarf morning-glory, ^{[2] [3]} is a rare species of flowering plant endemic extreme south Florida, western Cuba, and possibly Puerto Rico. ^[1]

Habitat

It is an obligate heliophyte, requiring an open canopy to persist, and is only known from pine rockland and similar calcareous habitats often found with sheer limestone exposures. ^[3]

Conservation

The species is threatened by habitat loss due to its restricted range and specific habitat requirements. In Florida, it is considered critically imperiled due to it only being known from one site. This relatively stable population of likely less than 1,000 plants persists on Big Pine Key where it is protected by the National Key Deer Refuge. ^[1]

Outside of Florida, it is known from Cuba's Pinar del Rio Province and Isla de Juventud, where its status is presently unknown. It has also been reported from Puerto Rico, although its status there is also unknown. ^[1]

References

1. "Evolvulus grisebachii". NatureServe Explorer. Retrieved 24 November 2025.
2. "Evolvulus grisebachii". Florida PlantAtlas. Retrieved 24 November 2025.
3. "Evolvulus grisebachii". Flora of the Southeastern United States. Retrieved 24 November 2025.