Pacific Island Ecosystems at Risk (PIER)

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Spiraea cantoniensis
Lour., Rosaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  Evaluate, Score: 4 (Go to the risk assessment)

Common name(s): [more details]

Chinese: mao ye xiu xian ju

English: Reeve's spiraea, Reeves' meadowsweet

Japanese: ko-demari

Habit:  shrub

Description:  "Shrubs to 1.5 m tall. Branchlets arching, dark red-brown, turning gray-brown when old, slender, terete, glabrous or pubescent; buds ovoid, small, with several scales, glabrous or puberulous apically or on scale margins. Petiole 4-7 mm, glabrous; leaf blade gray-blue abaxially, dark green adaxially, rhombic-lanceolate to rhombic-oblong, 2-8 x 0.7-2 cm, glabrous or abaxially pubescent, pinnately veined, base cuneate, margin incised serrate above middle, apex acute. Umbels pedunculate, 3-4 x 2-3.5 cm, many flowered; rachis and pedicels glabrous or pubescent; pedicels 8-14 mm; bracts linear to lanceolate, 2-3 mm, glabrous or pubescent. Flowers 5-7 mm in diameter. Hypanthium campanulate, glabrous or abaxially pubescent. Sepals triangular or ovate-triangular, 1-1.5 x 1.5-2 mm, erect in fruit, apex acute or shortly acuminate. Petals white, suborbicular or obovate, 2.5-4 x 3-4.5 mm, apex emarginate or obtuse. Stamens 20-28, slightly shorter than to nearly equaling petals. Disk annular, lobed; lobes unequal, suborbicular, apex emarginate. Styles shorter than stamens. Follicles straightly spreading, glabrous; styles terminal, usually divergent"  (Flora of China online).

Habitat/ecology:  In China (native and widely cultivated), "slopes; 200-300 m"  (Flora of China online).  In scrub in New Zealand.  "Widely cultivated as an ornamental and is one of the commonest persistent relics of cultivation in old garden sites"  (Webb et al., 1988; p. 1141).

Propagation:  Seed

Native range:  China, cultivated elsewhere (GRIN).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
State of Hawaii
Hawaiian Islands
Kaua‘i Island   National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1991) (voucher ID: PTBG 14690)
Taxon name on voucher: Spiraea cantoniensis Lour. var. lanceata Zabel
State of Hawaii
Hawaiian Islands
Maui Island   Bishop Museum (U.S.A. Hawaii. Honolulu.) (1999) (voucher ID: BISH 661873)
Taxon name on voucher: Spiraea cantoniensis Lour.
State of Hawaii
Hawaiian Islands
O‘ahu Island   Bishop Museum (U.S.A. Hawaii. Honolulu.) (1986) (voucher ID: BISH 534028)
Taxon name on voucher: Spiraea cantoniensis Lour.
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
cultivated
MacKee, H. S. (1994) (p. 122)
Vouchers cited: Baumann 15658, MacKee 22576
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
China
China
China (People's Republic of) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Fujian, Guangdong, Guangxi, Hunan, Jiangxi, Zhejiang
China
China
China (People's Republic of) native
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Japan
Japan
Japan (country)   Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
New Zealand
New Zealand
New Zealand (country) introduced
invasive
cultivated
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 1141)
Also reported from
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
United States (continental except west coast)
United States (other states)
United States (other states) introduced
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
Alabama, Arkansas, Louisiana, North Carolina, New York, Virginia


Need more info? Have questions? Comments? Information to contribute? Contact PIER! (pier@hear.org)

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This page was created on 19 OCT 2011 and was last updated on 31 OCT 2011.