Achyranthes splendens var. splendens — Details

Maui Chaff Flower learn more about names for this taxon

Overview

Distribution

Range Description

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The var. splendens is still a fairly common plant on Maui, and has been collected on Lana'i in the past but is no longer present on that island. Current populationsize and number of subpopulations is unknown.
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National Distribution

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United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

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Global Range: RANGE INCLUDES MAUI & LANAI. LANAI POPULATION PRIMARILY INTERMEDIATE BTWN 2 VARIETIES.

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Ecology

Habitat

Habitat and Ecology

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Habitat and Ecology
Occurs in low elevation, open, dry forest remnants and open thickets, on talus or rocky slopes, and on coralline plains (Wagner et al. 1999). On west Maui and Lanai: on rocky gulch slopes. On east Maui: old lava flows.

Systems
  • Terrestrial
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Comments: LOW ELEVATION, OPEN DRY FOREST REMNANTS & OPEN THICKETS.

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Population Biology

Number of Occurrences

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

Estimated Number of Occurrences: 1 - 5

Comments: 7 CURRENT POPULATIONS, 7 HISTORICAL RECORDS.

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Conservation

Conservation Status

IUCN Red List Assessment

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Red List Category
VU
Vulnerable

Red List Criteria
B1ab(iii)

Version
3.1

Year Assessed
2003

Assessor/s
Bruegmann, M.M. & Caraway, V.

Reviewer/s
Maunder, M. (Plant Conservation Committee) & Hilton-Taylor, C. (Red List Programme Office)

Justification
Achyranthes splendens var. splendens has an extent of occurrence less than 20,000 km², the population is severely fragmented and there is continuing decline in both extent and quality of habitat.
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National NatureServe Conservation Status

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United States

Rounded National Status Rank: N2 - Imperiled

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NatureServe Conservation Status

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Rounded Global Status Rank: T2 - Imperiled

Reasons: G2T2S2.1 7 CURRENT POPULATIONS, PROBABLY MORE THAN 2000 INDIVIDUALS.

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Population

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Population Trend
Decreasing
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Threats

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Major Threats
Threats include goats, cattle, competition from alien invasive plants and fire.
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Comments: THREATS INCLUDE FIRE, NON-NATIVE VEG, POSSIBLE DAMAGE BY GRAZING.

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Management

Conservation Actions

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Conservation Actions
Considered to be of conservation concern.
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Biological Research Needs: REPRODUCTIVE BIOLOGY AND POPULATION ECOLOGY.

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Needs: ENCOURAGE STATE TO PROTECT ALL POPULATIONS.

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Names and Taxonomy

Taxonomy

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Comments: GENUS FOUND THROUGHOUT SUBTROPICS. WAGNER ET AL. RECOGNIZE 2 VARIETIES WITHIN A. SPLENDENS. 5 PUBLISHED IN 1979 BY ST. JOHN ARE SYNONYMIZED BY WAGNER ET AL. WITH THIS SPECIES.

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