Dicerandra cornutissima

Last updated

Dicerandra cornutissima
Status TNC G2.svg
Imperiled  (NatureServe) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Lamiaceae
Genus: Dicerandra
Species:
D. cornutissima
Binomial name
Dicerandra cornutissima

Dicerandra cornutissima is a rare species of flowering plant in the mint family known by the common names longspurred mint, longspurred balm, and Robin's mint. It is endemic to Florida in the United States. It is found in Marion County, and possibly Sumter County, but it may have been totally extirpated from the latter. [3] [4] There are 12 known occurrences remaining as of 2017, [1] down from 15 in 2000. [5] The plant was federally listed as an endangered species in 1985. [3]

This species was formerly included within the description of its relative, Dicerandra frutescens . It was separated, elevated to species status, and described by Robin B. Huck in 1981. [3] [6] The new species is distinguished from D. frutescens in its darker, deeper pink flowers, its larger anthers, the smaller amount of hairs on its style, and its relatively narrow leaves. [3] It has a geographically separated distribution further north from that of D. frutescens. [3]

This is a strong-scented aromatic shrub growing up to about half a meter tall. The erect stems grow from a woody base. The oppositely arranged leaves are linear in shape, 1.5 centimeters long, smooth-edged, and dotted with visible oil glands. The flower has a corolla just under a centimeter long with a bent, tubular throat and lobed lips. The corolla is dark pink or purplish with purple spotting and a paler throat. The anthers have hornlike spurs, which, at over a millimeter long, are relatively large. [4] [5]

The plant grows in Florida scrub habitat and nearby sandhills. The scrub is dominated by stands of sand pines and several species of oak. Species in the understory include saw palmetto (Serenoa repens), scrub palmetto (Sabal etonia), and Florida rosemary (Ceratiola ericoides). The sandy ground may be covered with various lichens, such as Cladina evansii , Cladina subtenuis , and Cladonia leporine , and grass species such as wiregrass (Aristida stricta) and arrowfeather threeawn (A. purpurascens). [4]

The loss of this Florida scrub habitat is the greatest threat to the survival of this species. [4] Six of the fifteen remaining occurrences are in protected areas. Land is lost to urban development. The remaining territory is degraded because of the lack of proper land management. Although fire in the area is rare, [5] it is required in this fire-adapted habitat type to maintain the ecosystem. [4] Periodic fire clears out overgrown vegetation and creates the openings in the pine and oak canopy that this and many other species require. Controlled burns would be beneficial but these are difficult in this region because of nearby residential neighborhoods. Fires that start naturally are extinguished. [4] Other threats to the plant include introduced plant species such as Natal grass (Rhynchelytrum repens). [4]

Related Research Articles

<span class="mw-page-title-main">Lake Wales Ridge National Wildlife Refuge</span> United States National Wildlife Refuge in Florida

The Lake Wales Ridge National Wildlife Refuge is part of the United States National Wildlife Refuge (NWR) System, located in four separated areas on the Lake Wales Ridge east of US 27 between Davenport and Sebring Florida. The 1,194 acre (4.8 km2) refuge was established in 1990, to protect a host of plants and animals. It is also the first to be designated primarily for the preservation of endangered plants, and is not open to the general public. It contains a high proportion of remaining Florida scrub habitat. It is administered as part of the Merritt Island National Wildlife Refuge.

<i>Conradina</i> Genus of flowering plants

Conradina is a genus of flowering plants in the mint family, Lamiaceae. Its common name is false rosemary, or rarely, short leaf rosemary. There are 7 species of Conradina, all native to the southeastern United States. Conradina verticillata grows on the Cumberland Plateau in Kentucky and Tennessee. The other five grow mainly in Florida. All of the species are closely related and there is some doubt about whether they are all separate. Most species occupy xeric habitats with well-drained soils composed of white sand. The genus Conradina was established by Asa Gray in 1870. It was named for the American botanist Solomon White Conrad.

<i>Chionanthus pygmaeus</i> Species of flowering plant

Chionanthus pygmaeus is a rare species of flowering plant in the olive family known by the common name pygmy fringetree. It is endemic to Florida, where there are 46 known occurrences as of 2010. The plant is found in increasingly rare habitat in Central Florida that is being consumed for development, and some protected areas are not managed adequately. Most populations are small. It is a federally listed endangered species of the United States.

<i>Chrysopsis floridana</i> Species of plant

Chrysopsis floridana is a rare species of flowering plant in the family Asteraceae, known by its common name, Florida golden aster. It is endemic to Florida in the United States, where it is known from Hillsborough, Hardee, Manatee, and Pinellas Counties. It is considered an endemic of the west-central coast of the state in the general vicinity of Tampa Bay. There are 17 to 20 occurrences, many of which have few individuals, but one of which has over one million plants. In 1986 the plant was added to the US endangered species list because it was becoming increasingly rare, it was growing only on private property, and its habitat was unprotected and being destroyed and degraded by a number of forces. It is found at Bell Creek Nature Preserve in Riverview, Florida.

<i>Clitoria fragrans</i> Species of legume

Clitoria fragrans is a rare species of flowering plant in the legume family known by the common name pigeon wings, or sweet-scented pigeon wings. It is endemic to Central Florida, where it was known most recently from 62 occurrences, but no current estimates of the total global population are available. The plant is a federally listed threatened species of the United States.

<i>Conradina brevifolia</i> Species of flowering plant

Conradina brevifolia is a rare species of shrub in the mint family known by the common name short-leaved false rosemary. It is endemic to Central Florida, where it is known only from the Lake Wales Ridge. There are perhaps 36 occurrences of the plant remaining, and 10 of these are likely to be destroyed as their habitat is fragmented in the coming years. About 15% of the Lake Wales Ridge, the only home territory of the plant, remains today, the rest having been cleared for development and citrus groves. Few of the extant populations have more than 25 plants. This is a federally listed endangered species of the United States.

<i>Conradina etonia</i> Species of flowering plant

Conradina etonia is a rare species of shrub in the mint family known by the common name Etonia rosemary. It is endemic to Putnam County, Florida, where it is known from about 8 populations on Etoniah Creek State Forest containing fewer than 1000 total individuals. It has a specific habitat requirement and the main threat it faces is destruction and degradation of its habitat. It is a federally listed endangered species of the United States.

<i>Dicerandra christmanii</i> Species of flowering plant

Dicerandra christmanii is a rare species of flowering plant in the mint family known by the common names Garrett's mint, yellow scrub balm, and Lake Wales balm. It is endemic to Highlands County, Florida, in the United States, where it is known from only four sites on the Lake Wales Ridge. All are contained within a tract of land measuring 6 kilometers by 3 kilometers. The plant is steadily declining due to the destruction and degradation of its habitat, and only one of the four occurrences is on protected land. It is a federally listed endangered species.

<i>Dicerandra frutescens</i> Species of plant

Dicerandra frutescens is a rare species of flowering plant in the mint family known by the common names scrub mint and scrub balm. It is endemic to Highlands County, Florida, where it is known only from the Lake Wales Ridge. Its habitat is quickly being lost as it is converted to residential and agricultural use. It was federally listed as an endangered species of the United States in 1985.

<i>Dicerandra immaculata</i> Species of flowering plant

Dicerandra immaculata is a rare species of flowering plant in the mint family known by the common names Lakela's mint, Olga's mint, and spotless balm. It is endemic to Florida in the United States, where it is known only from Indian River and St. Lucie counties. There are seven occurrences of the plant, two of which are scheduled for destruction as the land is cleared for development. The plant was federally listed as an endangered species in 1985.

<i>Dicerandra</i> Genus of flowering plants

Dicerandra is a genus of flowering plants in the mint family. Dicerandra comprises 11 species: six perennial and five annual species. The perennials have narrow ranges in Central Florida with small population sizes and only occur on ancient dune ridges along the Lake Wales Ridge or the Atlantic Coastal Ridge; the annual species occur more broadly on sandhill habitats to the north. The perennials’ habitat has been severely fragmented due to human development over the past century. As a result, all perennial species except one are listed as federally endangered. Annual species of the clade have large ranges when compared to perennial members, with distributions of annuals ranging for hundreds of miles from the Panhandle of Florida to southeastern Georgia, with the exception of Dicerandra radfordiana which is endemic to two sites along the Altamaha river. The genus is characterized by hornlike spurs on their anthers.

<i>Eryngium cuneifolium</i> Species of flowering plant in the celery family Apiaceae

Eryngium cuneifolium is a rare species of flowering plant in the carrot family known by the common names wedgeleaf eryngo, wedge-leaved button-snakeroot, and simply snakeroot. It is endemic to the state of Florida in the United States where it is known only from Highlands County. It is one of many rare species that can be found only on the Lake Wales Ridge, an area of high endemism. It was federally listed as an endangered species of the United States in 1987.

<i>Lupinus aridorum</i> Species of legume

Lupinus aridorum is a rare species of lupine known by the common name scrub lupine. It is endemic to Florida in the United States, where there were 10 known populations remaining in 2003. Fewer than 6000 individual plants were counted. It is threatened by the loss and degradation of its habitat. The scrub lupine is a federally listed endangered species of the United States.

<i>Macbridea alba</i> Species of flowering plant

Macbridea alba is a rare species of flowering plant in the mint family known by the common name white birds-in-a-nest. It is endemic to Florida in the United States, where it is found in four counties in the Florida Panhandle. It is threatened by the loss and degradation of its habitat, and it is federally listed as a threatened species of the United States.

<i>Pinguicula ionantha</i> Species of carnivorous plant

Pinguicula ionantha is a rare species of flowering plant in the butterwort family known by the common names Godfrey's butterwort and violet butterwort. It is endemic to the US state of Florida, where it only occurs in the central Florida Panhandle. It is threatened by the loss of its habitat, and it is a federally listed threatened species of the United States.

<i>Prunus geniculata</i> Species of tree

Prunus geniculata is a rare species of plum known by the common name scrub plum. The species is endemic to Florida.

<i>Conradina grandiflora</i> Species of flowering plant

Conradina grandiflora is a species of flowering plant in the mint family known by the common name largeflower false rosemary, or large-flowered rosemary. It is endemic to Florida in the United States, where it occurs on the Atlantic Coastal Ridge. Its distribution spans Brevard, Broward, Dade, Highlands, Indian River, Martin, Osceola, Palm Beach, Polk, St. Lucie, and Volusia Counties.

The Florida peninsula inland scrub is a shrubland community found on the Florida peninsula. The largest remaining blocks of inland scrub are in and around the Ocala National Forest and in the Lake Wales Ridge National Wildlife Refuge. The Archbold Biological Station near Lake Placid contains about 20 km2 (7.7 sq mi) of scrub habitat and sponsors biological research on it. The scrub occurs on a series of north-south running ridges composed of sand derived from ancient dune fields. The soil, a type of entisol, is derived from quartz and is low in organic matter, silt, and clay. Because the low-nutrient sandy soils do not retain moisture, the ecosystem is effectively an arid one.

Dicerandra modesta is a species of Dicerandra endemic to the Lake Wales Ridge in Central Florida. It is commonly known as blushing scrub balm. It is a listed state and federal endangered species. It is known only from a few populations in Polk County, Florida. It grows in scrub and sand hills.

<i>Acanthomintha ilicifolia</i> Species of flowering plant

Acanthomintha ilicifolia, known by the common name San Diego thornmint, is a rare species of flowering plant in the mint family. It is native to Baja California and San Diego County, California, where it is a resident of the chaparral and coastal sage scrub plant communities and vernal pools.

References

  1. 1 2 NatureServe (5 April 2024). "Dicerandra cornutissima". NatureServe Network Biodiversity Location Data accessed through NatureServe Explorer. Arlington, Virginia: NatureServe. Retrieved 16 April 2024.
  2. "Longspurred mint (Dicerandra cornutissima)". Environmental Conservation Online System. U.S. Fish & Wildlife Service. Retrieved 16 April 2024.
  3. 1 2 3 4 5 6 Paradiso, John L.; Martin, David; U.S. Fish and Wildlife Service (1 November 1985). "Endangered and Threatened Wildlife and Plants; Determination of Endangered Status for Two Florida Mints". Federal Register. 50 (212): 45621–45624. 50 FR 45621
  4. 1 2 3 4 5 6 7 USFWS. Dicerandra cornutissima Five-year Review. September 2008.
  5. 1 2 3 "CPC National Collection Plant Profile: Dicerandra cornutissima". Center for Plant Conservation. 4 March 2010. Archived from the original on 23 September 2015.
  6. Huck, R.B. (1981). Dicerandra cornutissima, a new woody Labiate from Florida. Phytologia. 47(4) 313-315.