Pyracantha koidzumii

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Distribution Map: Based on vouchered plant specimens only. View county names by placing the mouse cursor over a particular county.

Species Distribution Map
Family:ROSACEAE
Species:Pyracantha koidzumii (Hayata) Rehder
Common Name:Formosan Firethorn
Habitat:**
Associated Ecological Communities:**
Growth Habit:Shrub
Duration:Perennial
Category:Vascular
USDA Symbol:PYKO
Plant Notes:Formosan Firethorn is an introduced evergreen shrub in the Rose family (Rosaceae). It is native to Taiwan, and is one of the most widely cultivated species in the genus in Alabama. It persists or escapes around old home sites, along roadsides, on fence rows, and in disturbed woodlands. It is a large shrub reaching 15-20 feet in height. The stems are upright to arching with short, spine tipped lateral branches. The reddish-brown to gray bark is smooth initially, later flaking in plates. Young twigs are pubescent, becoming glabrous with age. Leaves are alternate or fascicled, short petiolate, narrowly elliptic to obovate in outline, and glabrous or glabrescent on the lower surface. The margins are entire or with 1-3 shallow teeth. The upper surface of the leaf is dark green, the lower surface is lighter green. The apex of the leaf is truncate (straight) or retuse (rounded with a small notch). Flowers are produced in corymbs. Individual flowers have 5 triangular green sepals, 5 white petals, and 15-20 stamens. The hypanthium is pubescent. The fruit is an orange or red pome with persistent incurved sepals at the apex. Formosan Firethorn is listed as an invasive species by The Invasive Plant Atlas of the United States.—A. Diamond
Taxonomic Notes:**
Status:Not Native
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyROSACEAE - Rose family
Genus Pyracantha
Species Pyracantha koidzumii (Hayata) Rehder - Formosan Firethorn

Citation

Citation Pyracantha koidzumii (Hayata) Rehder, J. Arnold Arbor. 1(4): 261. 1920.
Basionym: Cotoneaster koidzumii Hayata 1911.
Type: TAIWAN

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Cotoneaster formosana Cotoneaster formosana Hayata, J. Coll. Sci. Imp. Univ. Tokyo 30(1): 101. 1911. TAIWAN
Cotoneaster koidzumii Cotoneaster koidzumii Hayata, J. Coll. Sci. Imp. Univ. Tokyo 30(1): 101. 1911. TAIWAN
Cotoneaster taitoensis Cotoneaster taitoensis Hayata, J. Coll. Sci. Imp. Univ. Tokyo 30(1): 102. 1911. TAIWAN
Pyracantha koidzumii var. taitoensis Pyracantha koidzumii (Hayata) Rehder, var. taitoensis (Hayata) Masamune, Rep. (Annual) Taihoku Bot. Gard. 3: 124. 1932.Cotoneaster taitoensis Hayata 1911. 

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort; choose a county or herbaria to filter the specimen data.

Counties included on distribution map: Autauga, Baldwin, Bibb, Blount, Bullock, Butler, Chambers, Coosa, Crenshaw, Dale, Dallas, Houston, Lee, Lowndes, Macon, Marengo, Montgomery, Pike, Shelby, Sumter

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: ALNHS, AUA, TROY, UNA, UWAL, UWFP

Range of years during which specimens were collected: 2020 - 2021

Barcode / Accession No.
County
Coll. Date
Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
UWAL0046756 Autauga 24 Jan 2017 Parker, Matthew R.
339		 UWAL
Pyracantha koidzumii (Hayata) Rehder
TROY000044739 Autauga 24 Jan 2017 Parker, Matthew R.
339		 TROY
Pyracantha koidzumii (Hayata) Rehder
UWAL0047316 Autauga 02 Nov 2017 Parker, Matthew R.
1453		 UWAL
Pyracantha koidzumii (Hayata) Rehder
TROY000047744 Autauga 02 Nov 2017 Parker, Matthew R.
1453		 TROY
Pyracantha koidzumii (Hayata) Rehder
AUA000023844 Baldwin 15 Apr 1973 HARWELL, W.CHARLES
133		 AUA
PYRACANTHA KOIDZUMII (HAYATA) REHDER
UWFP016026 Baldwin 20 Jul 1990 James R. Burkhalter
12117		 UWFP
Pyracantha koidzumii (Hayata) Rehder
TROY000022836 Bibb 30 Jan 2009 England, J. Kevin
1573		 TROY
Pyracantha koidzumii (Hayata) Rehder
UWAL0003835 Bibb 30 Jan 2009 England, J. Kevin
1573		 UWAL
Pyracantha koidzumii (Hayata) Rehder
AUA000026930 Bibb 30 Jan 2009 ENGLAND, J. KEVIN
1573		 AUA
PYRACANTHA KOIDZUMII (HAYATA) REHDER
UNA00069992 Bibb 30 Jan 2009 England, J. Kevin
1573		 UNA
Pyracantha koidzumii (Hayata) Rehd.
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