Overview

Distribution

National Distribution

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

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Global Range: Northwest Florida and southwestern Georgia. Confirmed from Liberty, Franklin, and Gadsden County and reported to occur in Bay, Calhoun, Levy counties, Florida.

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Physical Description

Diagnostic Description

Lythrum curtissii is similar to L. alatum var. lanceolatum, but may be characterized by a smaller calyx tube (3-4 mm long) and petals (ca. 3 mm long) and by its thinner, longer leaves of main stem, and its more remote branch leaves (Godfrey and Wooten, 1981; Kral, 1983).

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Ecology

Habitat

Comments: Silts, fine sands, or peat mucks of bogs, seeps, and clearings found in or on edges of acid or calcareous swamps, karst ponds, creek swamps, floodplains, and stream banks.

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Population Biology

Number of Occurrences

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: 6 - 20

Comments: Eight occurrence records from Florida (one not checked since 1954) and 4 in adjacent southwestern Georgia.

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Life History and Behavior

Life Cycle

Persistence: PERENNIAL

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Reproduction

Distyly and tristyly occur in genus.

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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: N1 - Critically Imperiled

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NatureServe Conservation Status

Rounded Global Status Rank: G1 - Critically Imperiled

Reasons: A species with a narrow range and with very low number of known occurrences: the Florida Natural Areas Inventory currently contains 8 occurrence records from 3 Florida Panhandle counties and one NE Florida county. It has been found at about several locations in 4 counties in adjacent southwestern Georgia. Clearcutting and subsequent conversion of large parts of this species' former range to slash pine, and the cutting of drainage ditches for conversion to agricultural land, have virtually eliminated all suitable habitat within the species' range.

Environmental Specificity: Narrow. Specialist or community with key requirements common.

Comments: Is found in wet open areas.

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Global Short Term Trend: Decline of 30-70%

Comments: Habitat is converted to silviculture or destroyed by road construction.

Global Long Term Trend: Decline of 50-90%

Comments: Habitat is converted to silviculture or destroyed by road construction.

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Threats

Degree of Threat: Very high - high

Comments: Conversion of habitat to pine plantations, alteration of hydrology; road building.

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Relevance to Humans and Ecosystems

Risks

Stewardship Overview: The habitat of Lythrum curtissii should not be clearcut or drained as a permanent drying of the site destroys the species and tree-crown closure shades it out (Kral, 1983).

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Names and Taxonomy

Taxonomy

Comments: Spelling 'curtissii' is correct (as in 1994 Kartesz checklist); sometimes misspelled 'curtisii' instead.

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Disclaimer

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