Conradina grandiflora - Small
Large-flower False Rosemary
Other English Common Names: Large-flowered Rosemary
Other Common Names: largeflower false rosemary
Taxonomic Status: Accepted
Related ITIS Name(s): Conradina grandiflora Small (TSN 32479)
Unique Identifier: ELEMENT_GLOBAL.2.160851
Element Code: PDLAM0D040
Informal Taxonomy: Plants, Vascular - Flowering Plants - Mint Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Lamiales Lamiaceae Conradina
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Concept Reference
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Concept Reference: Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Conradina grandiflora
Taxonomic Comments: Distinct species (Conradina with largest flowers); one of five se USA subspecies.
Conservation Status
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NatureServe Status

Global Status: G3
Global Status Last Reviewed: 03Nov1997
Global Status Last Changed: 17Feb1988
Rounded Global Status: 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.
Nation: United States
National Status: N3

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Florida (S3)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Brevard, Broward, Dade, Highlands, Indian River, Martin, Osceola, Palm Beach, Polk, St. Lucie, and Volusia cos., Florida.

Number of Occurrences: 21 - 80
Number of Occurrences Comments: Sixty-four element occurrences recorded as of October/1997.

Overall Threat Impact Comments: Conversion of habitat to housing, commercial developments or citriculture.

Short-term Trend: Decline of 10-30%
Short-term Trend Comments: Residential development and citrus agriculture are destroying habitat.

Intrinsic Vulnerability Comments: Responds vigorously to fire; invades mechanically disturbed soil; shaded out in pine plantations.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Brevard, Broward, Dade, Highlands, Indian River, Martin, Osceola, Palm Beach, Polk, St. Lucie, and Volusia cos., Florida.

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
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U.S. & Canada State/Province Distribution
United States FL

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
FL Brevard (12009), Broward (12011), Indian River (12061), Martin (12085), Okeechobee (12093), Osceola (12097), Palm Beach (12099), St. Lucie (12111), Volusia (12127)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
03 Upper St. Johns (03080101)+, Daytona - St. Augustine (03080201)+, Cape Canaveral (03080202)+, Vero Beach (03080203)+, Kissimmee (03090101)+, Florida Southeast Coast (03090206)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: Low shrubby mint to 1 meter tall, persistent, opposite, linear, needle-like leaves, densely tomentose beneath matted or appressed hairs. A contrasting, glabrous midrib beneath distinguishes this species. Flowers are relatively large, 2 cm at full anthesis, lavender-blue, with an abruptly bent corolla tube. One to twelve flowers occur in stalked cymes in upper leaf axils.
Technical Description: Pungently aromatic shrub mostly 1.0-1.5 m tall (-2 m). Branches few to several, spreading or arching, crown usually broader than long. Branchlets short to elongate, slender but stiff, canescent (densely short-hairy) with pale hairs. Leaves persistent, opposite, linear, needle-like, mostly 1-1.5 cm long, tips blunt, margins fleshy-involute, base acute to a short, reddish, terete petiole, upper surface gray-green, gland-dotted, short-appressed-hairy, the lower surface densely tomentulose with a somewhat less hairy, raised midrib. Inflorescence with flowers produced in short-stalked cymules from the upper leaf axils, the inflorescence thus short-cylindric. Flowering calyx tubular, 7-8 mm long, bilabiate, the upper lip about 3 mm long, short-oblong, 3-toothed apically, the lower lip of 2, narrow, sharp-tipped, rigid, forward-and-upward arching teeth about 3 mm long, the tube 4-5 mm long, 10-12-ribbed, greenish with the ribs maroon, puberulent and gland-dotted, the tooth margins ciliate. Corolla mostly fully 2 cm long, the narrow tube bent just above the level of the calyx tube opening, the throat broadly funnel-form, the limb strongly bilabiate, the upper lip arching forward, oblong, emarginate, somewhat shorter than the downwardly arching and spreading, 3-lobed, lower lip which is 9-16 mm long; surface externally pilose-puberulent, that of the tube and throat pale lavender, that of the lips deeper lavender-blue, the lower lobe medially nearly white with strong blotches of deep lavender-blue. Stamens 4, of 2 lengths, arching on long slender smooth filaments up and under the upper corolla lip and projecting the short anthers beyond its tip. Style arching as in the stamens, slender, smooth, forking at its apex into 2 short, spreading lobes. Fruit a nutlet, nearly round, nearly black, smoothish (Kral, 1983).
Diagnostic Characteristics: Differs from other southeastern species of Conradina by having the largest flowers which are in cymes of 1-12 on evident stalks (Kral, 1983).
Duration: PERENNIAL
Terrestrial Habitat(s): Sand/dune, Shrubland/chaparral
Habitat Comments: Sandy flats or sandhills, mostly with sand pine; vicinity of ancient dunes of shores; mostly near coast.
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 03Nov1997
NatureServe Conservation Status Factors Author: Hardin, E.D., Rev. D.L. White (1989); rev. L. Chafin (1997)
Element Ecology & Life History Edition Date: 29May1992

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
Help
  • Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

  • Kral, R. 1983c. A report on some rare, threatened, or endangered forest-related vascular plants of the South. U.S. Dept. of Agriculture Forest Service Technical Publication R8-TP2, Athens, GA. 1305 pp.

  • Shinners, L.H. 1962a. Synopsis of Conradina (Labiatae). Sida 1(2):84-88.

  • Shinners, L.H. 1962b. Vegetative key to woody Labiatae of the Southeastern Coastal Plain. Sida 1(2):92-93.

  • Small, J.K. 1933. Manual of the southeastern flora. Two volumes. Hafner Publishing Company, New York.

  • Wunderlin, R.P., B.F. Hansen, and E.L. Bridges. 1996. Atlas of Florida Vascular Plants. Published on the Internet: http://www.usf.edu/isb/projects/atlas/atlas.html

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