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Overview

Distribution

Range Description

The species range is confined to the valley between Hualien and Taitung on the eastern side of the island.
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National Distribution

United States

Origin: Exotic

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Physical Description

Morphology

Description

Shrubs caespitose. Branchlets dark gray, often thornlike, initially pubescent, glabrous when old. Leaves usually 3–5-fascicled; petioles ca. 3 mm, puberulous; leaf blade narrowly elliptic to narrowly obovate, 3–4.5 × 0.7–1.2 cm, abaxially glaucescent, densely pubescent when young, glabrescent, adaxially glabrous, base cuneate, margin entire, apex slightly emarginate or truncate. Corymb 3–4 cm in diam., many flowered; peduncle sparsely pubescent; bracts caducous, lanceolate. Pedicel 5–11 mm, sparsely pubescent. Flowers 8–10 mm in diam. Hypanthium campanulate, abaxially densely pubescent. Sepals triangular, 1–1.2 mm, abaxially densely pubescent when young, apex acute. Petals suborbicular or broadly elliptic, 3.5–4 × 3–4 mm, apex slightly emarginate. Stamens 20; filaments 2–3 mm. Ovary pubescent; styles nearly as long as stamens. Pome orangish red, depressed-globose, 4–5 mm. Fr. Aug–Nov.
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Diagnostic Description

Synonym

Cotoneaster koidzumii Hayata, J. Coll. Sci. Imp. Univ. Tokyo 30(1): 101. 1911; C. formosanus Hayata; C. taitoensis Hayata; Pyracantha formosana Kanehira; P. koidzumii var. taitoensis (Hayata) Masamune.
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Shrubs are common in scrub along river banks and on lowland plains on sandy soils.

Systems
  • Terrestrial
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Habitat & Distribution

Rocky valley areas, seashores, thickets, among shrubs. Taiwan.
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
EN
Endangered

Red List Criteria
A1acd+2bde, C2a

Version
2.3

Year Assessed
1998
  • Needs updating

Assessor/s
Pan, F.J.

Reviewer/s

Contributor/s
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National NatureServe Conservation Status

United States

Rounded National Status Rank: NNA - Not Applicable

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NatureServe Conservation Status

Rounded Global Status Rank: GNR - Not Yet Ranked

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Population

Population
No large individuals are found in the wild.
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Threats

Major Threats
Exploitation of the plant both for commercial trade and at a local level has led to population declines. Field surveys indicate that seedlings are scattered and few. No conservation or protection measures are in place.
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Wikipedia

Pyracantha koidzumii

Pyracantha koidzumii commonly known as Formosa firethorn,[2] is a species of plant in the Rosaceae family. It is threatened by habitat loss.

Description and distribution[edit source | edit]

The species is 4 metres (13 ft) tall and is native to Taiwan. However, besides Taiwan it was introduced to such US states as Alabama, Arkansas, Georgia, Florida and South Carolina.[2]

References[edit source | edit]


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