Clerodendrum quadriloculare (Blanco) Merr., Lamiaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High risk, score: 11 (Go to the risk assessment)

Other Latin names:  Ligustrum quadriloculare Blanco

Common name(s): [more details]

English: Philippine glorybower, bronze-leaved clerodendrum, fire works, shooting star, starburst bush

Marshallese: tirooj in belle

Other: bagauac

Palauan: kleuang

Pohnpeian: risiel, tuhkehn Palau

Habit:  shrub

Description:  "An erect, glabrous or nearly glabrous shrub or small tree 2 to 5 m high.  Leaves oblong, 15-20 cm long, apex shortly acuminate, base rounded, the upper surface green, the lower surface usually uniformly dark-purple.  Cymes terminal, panicled, usually many-flowered.  Calyx urceolate, purple about 1 cm long, about 2 mm in diameter, the limb spreading, the lobes oblong-elliptic, about 1.5 cm long.  Fruit ellipsoid, 1 to 1.5 cm long, purplish, the persistent calyx red and 1 to 1.5 cm long"  (Merrill, 1912; p. 402).

"Shrub from the Philippines with large, paired oval leaves that are dark green above and reddish purple below. The flowers, which are produced in very showy large clusters, each have a narrow pink tube that is commonly 3 inches or more in length, ending in five white, spreading lobes" (University of Hawai'i Botany Department).

Habitat/ecology:  Commonly planted as an ornamental for its foliage and showy flowers.

Propagation:  Produces large amounts of seed and suckers profusely from the roots.

Native range:  New Guinea, Philippines (GRIN).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
American Samoa Manu‘a Islands	Ta‘u Island	introduced cultivated	Space, James C./Flynn, Tim (2000) (pp. 6, 13)
American Samoa Tutuila Islands	Tutuila Island	introduced cultivated	Space, James C./Flynn, Tim (2000) (p. 6)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Rota Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 235)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Tinian Island	introduced cultivated	Space, James C./Falanruw, Marjorie (1999) (p. 10)
Federated States of Micronesia Chuuk Islands	Fefan Island	introduced invasive cultivated	Space, James C./Waterhouse, Barbara/Denslow, Julie S./Nelson, Duane/Mazawa, Thomas R. (2000) (p. 5) Voucher: BMW 5804 (BISH, BRI, GUAM)
Federated States of Micronesia Chuuk Islands	Fefan Island		Bishop Museum (Honolulu) (2000) (voucher ID: BISH 687758) Taxon name on voucher: Clerodendrum quadriloculare (Blanco) Merr.
Federated States of Micronesia Chuuk Islands	Fefan Island		Bishop Museum (Honolulu) (2000) (voucher ID: BISH 687759) Taxon name on voucher: Clerodendrum quadriloculare (Blanco) Merr.
Federated States of Micronesia Chuuk Islands	Tol Island	introduced cultivated	Space, James C./Waterhouse, Barbara/Denslow, Julie S./Nelson, Duane/Mazawa, Thomas R. (2000) (p. 5)
Federated States of Micronesia Chuuk Islands	Weno (Moen) Island	introduced cultivated	Space, James C./Waterhouse, Barbara/Denslow, Julie S./Nelson, Duane/Mazawa, Thomas R. (2000) (p. 5)
Federated States of Micronesia Kosrae Island	Kosrae Island	introduced cultivated	Space, James C./Waterhouse, Barbara/Denslow, Julie S./Nelson, Duane/Waguk, Erick E. (2000) (p. 5)
Federated States of Micronesia Kosrae Island	Kosrae Island	introduced invasive cultivated	Lorence, David H./Flynn, Timothy (2010) (p. 18) Invasive
Federated States of Micronesia Kosrae Island	Kosrae Island	introduced invasive	Josekutty, P. C./Wakuk, E. E./Joseph, M. J. (2002) (p. 62)
Federated States of Micronesia Kosrae Island	Kosrae Island	introduced invasive	Sanney, Jacob A. (2013) (p. 19) KCSO target species 2013
Federated States of Micronesia Pohnpei Islands	Pohnpei Island		Swarbrick, John T. (1997) (p. 90)
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced invasive	Meyer, Jean-Yves (2000) (p. 90)
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced invasive cultivated	Space, James C./Falanruw, Marjorie (1999) (pp. 4, 10)
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced invasive cultivated	Herrera, Katherine/Lorence, David H./Flynn, Timothy/Balick, Michael J. (2010) (p. 100) Voucher cited: S. Perlman 21390 (PTBG) Invasive
Federated States of Micronesia Yap Islands	Yap (Waqab) Island	introduced cultivated	Space, James C./Falanruw, Marjorie (1999) (p. 10)
French Polynesia Society Islands	Tahiti Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Naturalisée
French Polynesia Tuamotu Archipelago	Raro‘ia Atoll	introduced cultivated	Meyer, Jean-Yves/Fourdrigniez, Marie (2008) (p. 15)
French Polynesia Austral (Tubuai) Islands	Rurutu Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Naturalisée
French Polynesia Austral (Tubuai) Islands	Tubuai Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Naturalisée
Guam Guam Island	Guam Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 235)
Guam Guam Island	Guam Island	introduced	Meyer, Jean-Yves (2000) (p. 95) "Potential invader".
Guam Guam Island	Guam Island	introduced cultivated	Space, James C./Falanruw, Marjorie (1999) (p. 10)
Guam Guam Island	Guam Island		Bishop Museum (Honolulu) (1966) (voucher ID: BISH 652423) Taxon name on voucher: Clerodendrum quadriloculare (Blanco) Merr.
Guam Guam Island	Guam Island		Bishop Museum (Honolulu) (1963) (voucher ID: BISH 652444) Taxon name on voucher: Clerodendrum quadriloculare (Blanco) Merr.
Guam Guam Island	Guam Island		National Tropical Botanical Garden (U.S.A. Hawaii. Kalaheo.) (1966) (voucher ID: PTBG 22216) Taxon name on voucher: Clerodendrum quadriloculare
State of Hawaii Hawaiian Islands	Hawaiian Islands	introduced cultivated	Staples, George W./Herbst, Derral/Imada, Clyde T. (2000) (p. 31)
Marshall Islands Ralik Chain	Kwajalein (Kuwajleen) Atoll	introduced cultivated	Whistler, W. A./Steele, O. (1999) (p. 103)
Marshall Islands Ratak Chain	Majuro (Mãjro) Atoll	introduced cultivated	Vander Velde, Nancy (2003) (p. 131)
Palau Kayangel Atoll	Kayangel Islet	introduced invasive	Miles, Joel (2015) (p. 2) ref cites other taxa as "Cultivated," but not this one, so implication is that this taxon was found in a non-cultivated situation (PT@PhilipT.com/20170602)
Palau Palau (Belau ) (main island group)	Angaur (Ngeaur) Island	introduced invasive cultivated	Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (pp. 7-8, 88)
Palau Palau (Belau ) (main island group)	Angaur (Ngeaur) Island	introduced invasive cultivated	Space, James C./Lorence, David H./LaRosa, Anne Marie (2009) (p. 10)
Palau Palau (Belau ) (main island group)	Babeldaob Island	introduced invasive	Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (pp. 7-8, 84)
Palau Palau (Belau ) (main island group)	Babeldaob Island	introduced invasive	Space, James C./Lorence, David H./LaRosa, Anne Marie (2009) (p. 10)
Palau Palau (Belau ) (main island group)	Kayangel (Ngcheangel) Island	introduced invasive	Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (pp. 7-8, 89)
Palau Palau (Belau ) (main island group)	Koror (Oreor) Island	introduced invasive	Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (pp. 7-8, 80)
Palau Palau (Belau ) (main island group)	Koror (Oreor) Island	introduced cultivated	Lorence, David H./Flynn, Tim (2010) (p. 31)
Palau Palau (Belau ) (main island group)	Koror (Oreor) Island		Bishop Museum (Honolulu) (1991) (voucher ID: BISH 611196) Taxon name on voucher: Clerodendrum quadriloculare (Blanco) Merr.
Palau Palau (Belau ) (main island group)	Koror (Oreor) Island		Beleu National Museum (Republic of Palau. Koror.) (1991) (voucher ID: BNM 9574) Taxon name on voucher: Clerodendrum quadriloculare (Blanco) Merrill
Palau Palau (Belau ) (main island group)	Ngercheu Island	introduced invasive cultivated	Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (pp. 7-8, 92) Carp Resort
Palau Palau (Belau ) (main island group)	Ngerkebesang Island	introduced invasive	Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (pp. 7-8, 80)
Palau Palau (Belau ) (main island group)	Ngerkebesang Island	introduced invasive	Space, James C./Lorence, David H./LaRosa, Anne Marie (2009) (p. 10)
Palau Palau (Belau ) (main island group)	Peleliu (Beliliou) Island	introduced invasive	Space, James C./Waterhouse, Barbara/Miles, Joel E./Tiobech, Joseph/Rengulbai, Kashgar (2003) (pp. 7-8, 90)
Papua New Guinea Papua New Guinea (eastern New Guinea Island)	Papua New Guinea (eastern New Guinea Island)		U.S. Dept. Agr., Agr. Res. Serv. (2013)
Philippines Philippine Islands	Philippine Islands	native	U.S. Dept. Agr., Agr. Res. Serv. (2013) Luzon, Mindanao, Negros, Panay
Philippines Philippine Islands	Philippine Islands	native	Merrill, Elmer D. (1923) (pp. 404-405) In primary forests at low and medium altitudes.
Samoa Western Samoa Islands	Savai‘i Island	introduced invasive cultivated	Space, James C./Flynn, Tim (2002) (p. 6)
Samoa Western Samoa Islands	Upolu Island	introduced invasive cultivated	Space, James C./Flynn, Tim (2002) (p. 6)

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Singapore Singapore	Singapore (Republic of)	introduced cultivated	Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 27) Cultivated only

Comments:  Suckers and sprouts profusely, making it an undesirable tree to plant for ornamental and other purposes. Mostly found along roads and cultivated in yards. However, On Pohnpei it was seen growing in full shade under the forest canopy in a dense, monospecific understory (Space & Falanruw, 1999). Planting of this species should be discouraged and it should be monitored closely for spread.

Control: 

Physical:  "Very difficult to control manually by pulling"  (Englberger, 2009; p. 15).

Chemical:  "For young plants, triclopyr (Garlon 4) can be used as foliar application and for large plants; undiluted Garlon 4 can be applied to cut stem"  (Englberger, 2009; p. 15).