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Lamiaceae Taxonomy Browser
Conradina grandiflora Small
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Rounded Global Status Rank: G3 - Vulnerable
Reasons: Dramatic decline in scrub habitat on Atlantic Coastal Ridge. 64 element occurrences with 14 found within managed areas; not uncommon where scrub persists. Threatened by habitat conversion to housing, commercial development or citriculture.
Global Short Term Trend: Decline of 10-30%
Comments: Residential development and citrus agriculture are destroying habitat.
Comments: Conversion of habitat to housing, commercial developments or citriculture.
A member of the mint family, Conradina grandiflora is a perennial, evergreen shrub endemic to Florida. It grows to 1 - 1.5 m (3.3 - 5.0 feet) in height and has grayish bark along the woody portions of the stems. Branches are typically arching or spreading in habit. The aromatic leaves are needle-like and opposite, measuring 1 - 1.5 cm (0.4 - .6 inches) in length. Upper parts of the leaves are dark green, shiny, and marked with small black dots. The lower leaf surfaces may appear white or gray in color due to a dense growth of fine hairs along the stem and leaves (Nelson 1996). Blooming occurs throughout the year. Stalked flowers appear on cymes in groups of 1 - 12. Flowers are two-lipped and large, measuring approximately 2 cm (0.8 inches) at the upper lip (Nelson 1996). There are 4 stamens that arch to the upper lip of the flower. Anthers lack horns (Wunderlin 1982; Small 1993), and the calyx is somewhat bent.Flower color is bright blue to lavender, with the lower lip flecked with tiny dark spots. Fruits are small and nut-like, with a smooth skin and dark blue-black color (Nelson 1996).
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Source | http://www.sms.si.edu/irlspec/Conrad_grandif.htm |
Conradina grandiflora has no Federal status as an imperiled species, though it is listed as Threatened in Florida, having been downlisted from its previous status as Endangered. It has has been assigned a global rank of G3 (FNAI 2006), which classifies it as rare and local, or restricted, throughout its range, with 21-100 known occurrences. It is considered vulnerable to extinction due to habitat alteration or loss, with the primary threat being continued development of coastal scrub areas for commercial or residential uses. There are no active management plans for specific preservation of Conradina grandiflora, and Florida State Law considers endangered and threatened plants growing on privately owned lands as the property of the owner.However, there are many incentives granted to Florida landowners, both large and small, who wish to conserve the rare and endangered plants and wildlife that occur on their lands.
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | Text can be freely copied and altered, as long as original author and source are properly acknowledged. |
Source | http://www.sms.si.edu/irlspec/Conrad_grandif.htm |
United States
Origin: Native
Regularity: Regularly occurring
Currently: Present
Confidence: Confident
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.[1]
This aromatic shrub generally grows up to about 1.5 meters in maximum height, but it is known to reach two meters. The branches end in twigs which are coated in pale hairs. The hairy, glandular, needle-like leaves are up to 1.5 centimeters in length. Each flower has a hairy, maroon-tinged calyx of pointed sepals. The flower corolla is about 2 centimeters long, with a funnel-shaped throat and a hairy, lipped mouth. It is lavender in color with darker lavender spots. This species has the largest flowers of the genus Conradina.[1] The plant flowers year-round.[2]
This plant grows on dunes and other landforms with deep, sandy soils, often near the coast.[1][2] The habitat is generally Florida scrub, and the plant is common in remaining remnants of scrub habitat.[2] It is well-adapted to a regime of frequent fires. It does not tolerate shade and requires fire to keep the habitat open and sunny.[1] It is associated with sand pine (Pinus clausa), and with Lyonia, Ilex, Ceratiola, Polygonella, Opuntia, and various scrub oaks. There are about 64 occurrences.[2]
The main threat to the species is the loss of the Florida scrub habitat. It is being claimed for development of housing, commercial use, and citrus groves.[1][2] It carries a threatened status in the state of Florida, but it is not federally listed.[3]
References[edit]
- ^ a b c d e Conradina grandiflora. The Nature Conservancy.
- ^ a b c d e Conradina grandiflora. Center for Plant Conservation.
- ^ Conradina grandiflora. Smithsonian Marina Station at Fort Pierce.
License | http://creativecommons.org/licenses/by-sa/3.0/ |
Rights holder/Author | Wikipedia |
Source | http://en.wikipedia.org/w/index.php?title=Conradina_grandiflora&oldid=635342908 |
Global Range: Brevard, Broward, Dade, Highlands, Indian River, Martin, Osceola, Palm Beach, Polk, St. Lucie, and Volusia cos., Florida.
Comments: Distinct species (Conradina with largest flowers); one of five se USA subspecies.
Conradina grandiflora is endemic to the Atlantic Coastal Ridge in eastern Florida. Its range extends from approximately Volusia County to Broward County (Nelson 1996). It has likely been extirpated from Dade County (Kral 1983). Conradina grandiflora occurs in all India River Lagoon counties in coastal scrub areas, pine scrub, dunes, or sand hills where soil is deep and consists of fine sand (Kral 1983; Nelson 1996).
License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
Rights holder/Author | Text can be freely copied and altered, as long as original author and source are properly acknowledged. |
Source | http://www.sms.si.edu/irlspec/Conrad_grandif.htm |