Rosa laevigata Michx., Rosaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  yes

Risk assessment results:  High risk, score: 16 (Go to the risk assessment)

Common name(s): [more details]

Chinese: jin ying zi

English: Cherokee rose

Habit:  shrub

Description:  "Evergreen scandent shrub. Stems glabrous, scattered with sparse prickles; branchlets sometimes with thinly glandular hairs. Leaves mostly 3-foliolate, rarely 5; leaflets elliptic or ovate, the terminal one 5-7 cm long, 2.5-3 cm wide, the lateral ones smaller, acute or obtuse at apex, acute at base, glabrous on both surfaces, serrate; rachis glabrous and sparsely prickled; stipules adnate to the base of rachis, linear, up to 1.2 cm long, glandular-hairy and serrate along the margin. Flowers solitary, 5-7 cm long; hypanthium and pedicels densely prickled; sepals persistent, prickled outside; petals white, emarginate. Fruit pyriform, up to 3.5 cm long, 1-1.5 cm wide, densely prickled" (Li et al., 1977; p. 99).

Habitat/ecology:  Very common in thickets at low altitudes (Li et al., 1977; p. 99). In Hawai‘i, a sprawling thorny vine escaped from cultivation and naturalized in mesic forests.

Propagation:  Seed

Native range:  Mainland China, Japan, Taiwan, Vietnam (Li et al., 1977, p. 99; 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	Hawai‘i (Big) Island	introduced cultivated	Nagata, Kenneth M. (1995) (p. 12) Voucher cited: Fagerlund & Mitchell 284 (BISH) Remnant of cultivation.
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island	introduced invasive	Parker, James L./Parsons, Bobby (2012) (p. 61) Voucher cited: J. Parker & R. Parsons BIED58 (BISH)
State of Hawaii Hawaiian Islands	Kaua‘i Island	introduced cultivated	Nagata, Kenneth M. (1995) (p. 12) Voucher cited: Lorence 5255 (BISH) Remnant of cultivation.
State of Hawaii Hawaiian Islands	Lāna‘i Island	introduced invasive	Nagata, Kenneth M. (1995) (p. 12) Vouchers cited: St. John & Hosaka 18854 (BISH), Nagata 2630 (BISH, HLA) Naturalized at about 2800 ft. elevation.

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	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2011) "Thickets, scrub, open montane areas, open fields, farmland; 200-1600 m".
China China	Hong Kong	native	Wu, Te-lin (2001) (p. 127)
Taiwan Taiwan	Taiwan Island	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Vietnam Vietnam	Vietnam (Socialist Republic of)	native	U.S. Dept. Agr., Agr. Res. Serv. (2011)

Control: 

Chemical: "Katie Cassel (Kōke‘e Museum) reported that Cherokee rose was susceptible to 20% triclopyr ester product in oil applied to cut surfaces.  Drizzle applications with glyphosate, metsulfuron, or triclopyr only effective on treated parts of plants.  Apparently there was not enough translocation to kill the entire plant"  (Motooka et al., 2003).

Additional information:
Excerpt from the book "Weeds of Hawaii‘s Pastures and Natural Areas; An Identification and Management Guide" (Motooka et al., 2003). (PDF format).
Information from the publication "Nonnative invasive plants of Southern forests: A field guide for identification and control".

Additional online information about Rosa laevigata is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Rosa laevigata as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Rosa laevigata may be available from the Germplasm Resources Information Network (GRIN).

References:

Li, Hui-lin/Liu, Tang-shui/Huang, Tseng-chieng/Koyama, Tetsuo/DeVol, Charles E., eds. 1977. Flora of Taiwan, Volume 3. Epoch Pub. Co., Taipei. 1000 pp.

Miller, James H. 2003. Nonnative invasive plants of Southern forests: A field guide for identification and control. U.S. Department of Agriculture, Forest Service, Southern Research Station. Gen. Tech. Rep. SRS-62. 93 p.

Motooka, Philip/Castro, Luisa/Nelson, Duane/Nagai, Guy/Ching, Lincoln. 2003. Weeds of Hawaii‘s Pastures and Natural Areas; An Identification and Management Guide. College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa. 184 pp.

Nagata, Kenneth M. 1995. New Hawaiian plant records IV. In: Evenhuis, Neal L. and Miller, Scott, E., eds. Records of the Hawaii Biological Survey for 1994. Part 2: Notes. Bishop Museum Occasional Papers. 42:10-13.

Parker, James L./Parsons, Bobby. 2012. New plant records from the Big Island for 2009. In: Evenhuis, Neal L. and Eldredge, Lucius G., eds. Records of the Hawaii Biological Survey for 2011. Part II: Plants. Bishop Museum Occasional Papers. 113:55-63.

U.S. Dept. Agr., Agr. Res. Serv. 2011. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. 1999. Manual of the flowering plants of Hawaii. Revised edition. Bernice P. Bishop Museum special publication. University of Hawai‘i Press/Bishop Museum Press, Honolulu. 1919 pp. (two volumes).

Wu, Te-lin. 2001. Check List of Hong Kong Plants. Hong Kong Herbarium and the South China Institute of Botany. Agriculture, Fisheries and Conservation Department Bulletin 1 (revised). 384 pp.

Zhengyi, Wu/Raven, Peter H./Deyuan, Hong. 2011. Flora of China (online resource).