Pentas lanceolata (Forssk.) Deflers, Rubiaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  Evaluate, score: 5 (Go to the risk assessment).

Other Latin names:  Mussaenda luteola Delile; Ophiorrhiza lanceolata Forssk.

Common name(s): [more details]

Chinese: wu xing hua

English: Egyptian star-cluster, Lady Fletcher, pentas, star-cluster

Fijian: sinu, sunu vula

Maori (Cook Islands): tiale valeau

Tongarevan (spoken): tiale sina, tiare vareau

Tongarevan (written): tiare sina

Habit:  herb

Description:  "Subshrubs, 30-70 cm tall; branches quadrangular, moderately to densely pilosulous to villous often becoming glabrescent with age. Leaves opposite; petiole 0.5-3 cm, pilosulous to villous; blade drying papery, oblong-lanceolate to ovate, 5-14 x 2-5.5 cm, adaxially scabrous or villous to glabrescent, abaxially densely villous or hirtellous at least along principal veins, base cuneate to obtuse, apex acute or shortly acuminate; secondary veins 8-10 pairs; stipules truncate to broadly rounded, 1.5-2 mm, villous, bristles 1-5, 1-4 mm. Inflorescence densely pilosulous to villous; peduncle 3-12 mm; branched portion congested-cymose often becoming lax, 1.5-4 x 1.5-4 cm; bracts narrowly triangular to linear, 0.5-1.5 mm. Flowers sessile or subsessile, distylous. Calyx densely hirtellous or villous; ovary portion subglobose to obovoid, ca. 1 mm; limb deeply lobed; lobes narrowly oblanceolate to elliptic or narrowly spatulate, 2-8 mm, usually unequal on an individual flower with nearly this entire size range found on some flowers, acute. Corolla pale purple to pink, red, white, or yellow, salverform, sparsely hirtellous to glabrescent outside; tube slender except rather abruptly swollen in throat in long-styled form (around stamens), 17-20 mm, densely barbate in throat; lobes elliptic or oblong-lanceolate, 3-4 mm, acute to obtuse. Capsules obovoid, 4-6 x 4-6 mm, stiffly papery to woody, with beak 1-2 mm tall; seeds 0.5-1 mm"  (Flora of China online).

Habitat/ecology:  "Thrives in full or filtered sun and in well-drained, organically enriched soil.  Plants require ample water and do not grow well without it"  (Staples & Herbst, 2005; p. 496).

In Fiji, "often abundantly cultivated in towns and villages and European gardens at elevations from near sea level to about 250 m"  (Smith, 1988; p. 351).

Propagation:  Seed

Native range:  Tropical Africa, Yemen; cultivated elsewhere in tropics (GRIN).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia (Pacific offshore islands) Norfolk Islands	Norfolk Island	introduced invasive cultivated	Australian Biological Resources Study (2013) "An escape from cultivation, becoming naturalised". Voucher cited: W.R. Sykes NI 660 (CHR).
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Rota Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (pp. 273-274)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Rota Island	introduced	Raulerson, L. (2006) (p. 66)
Commonwealth of the Northern Mariana Islands (US) Northern Mariana Islands	Tinian Island		Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013)
Cook Islands Northern Cook Islands	Penrhyn (Tongareva) Island	introduced cultivated	McCormack, Gerald (2013)
Cook Islands Southern Cook Islands	‘Atiu Island	introduced cultivated	McCormack, Gerald (2013)
Cook Islands Southern Cook Islands	Mangaia Island	introduced cultivated	McCormack, Gerald (2013)
Cook Islands Southern Cook Islands	Ma‘uke Island	introduced cultivated	McCormack, Gerald (2013)
Cook Islands Southern Cook Islands	Miti‘aro Island	introduced cultivated	McCormack, Gerald (2013)
Cook Islands Southern Cook Islands	Rarotonga Island	introduced cultivated	McCormack, Gerald (2013)
Ecuador (Galápagos Islands) San Cristóbal Group	San Cristóbal Island	introduced cultivated	Charles Darwin Foundation (2008)
Federated States of Micronesia Pohnpei Islands	Pohnpei Island	introduced cultivated	Herrera, Katherine/Lorence, David H./Flynn, Timothy/Balick, Michael J. (2010) (p. 130) Voucher cited: F.R. Fosberg 58441 (BISH)
Fiji Fiji Islands	Ovalau Island	introduced cultivated	Smith, Albert C. (1988) (p. 351) Vouchers cited: Smith 7488, Smith 7492
Fiji Fiji Islands	Viti Levu Island	introduced cultivated	Smith, Albert C. (1988) (p. 351) Vouchers cited: DA 16722, DA 16775, DA 12118, DA 12120, DA 16461, DA 12617
French Polynesia Gambier Islands	Taravai Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) subsp. lanceolata
French Polynesia Marquesas Islands	Hiva Oa Island	introduced cultivated	Lorence, David H./Wagner, Warren L. (2013) Voucher cited: L. M. Dunn 496 (BISH, P, PAP, PTBG, US)
French Polynesia Marquesas Islands	Nuku Hiva (Nukahiva) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) subsp. lanceolata
French Polynesia Marquesas Islands	Tahuata (Tuhuata) Island	introduced cultivated	Lorence, David H./Wagner, Warren L. (2013) Voucher cited: S. P. Perlman 18373 (BISH, P, PAP, PTBG, US)
French Polynesia Marquesas Islands	Ua Huka (Huahuna, Uahuka) Island	introduced cultivated	Lorence, David H./Wagner, Warren L. (2013) Voucher cited: S. P. Perlman 19062 (BISH, NY, P, PAP, PTBG, US)
French Polynesia Marquesas Islands	Ua Pou (Huapu, Uapou, Uapu) Island	introduced cultivated	Lorence, David H./Wagner, Warren L. (2013) Voucher cited: L. M. Dunn, D. H. Lorence 243 (P, PAP, PTBG, US)
French Polynesia Society Islands	Huahine Island	introduced invasive cultivated	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) subsp. lanceolata. Voucher cited: J. Florence & R. Tahuaitu 11662 (PAP)
French Polynesia Society Islands	Moorea Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) subsp. lanceolata
French Polynesia Society Islands	Raiatea (Havai) Island	introduced invasive cultivated	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) subsp. lanceolata, subsp. quartiniana. Vouchers cited: J. Florence 3401 (PAP), P. Morat 7021 (PAP)
French Polynesia Society Islands	Tahiti Island	introduced invasive cultivated	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) subsp. lanceolata, subsp. quartiniana. Voucher cited: J. Florenece 2455 (PAP)
French Polynesia Tuamotu Archipelago	Makatea (Ma‘atea) Island	introduced invasive cultivated	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) subsp. lanceolata. Voucher cited: J. Florence 3067 (PAP)
French Polynesia Tuamotu Archipelago	Niau Atoll	introduced invasive cultivated	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) subsp. lanceolata. Voucher cited: J. Florence 10201 (PAP)
French Polynesia Tuamotu Archipelago	Tikehau (Tikahau) Atoll	introduced cultivated	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Voucher cited: J. Florence 7116 (PAP)
French Polynesia Austral (Tubuai) Islands	Raivavae (Raevavae) Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) subsp. lanceolata
French Polynesia Austral (Tubuai) Islands	Rurutu Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) subsp. lanceolata
French Polynesia Austral (Tubuai) Islands	Tubuai Island	introduced invasive	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) subsp. lanceolata
Guam Guam Island	Guam Island	introduced	Raulerson, L. (2006) (p. 66)
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island	introduced invasive	Nagata, Kenneth M. (1995) (p. 12) Voucher cited: Nagata 2650 (HLA), Nagata 2651 (HLA)
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive	Starr, Forest/Martz, Kim/Loope, Lloyd L. (2002) (p. 24) East Maui. Vouchers cited: Starr & Martz 981110-3 (BISH), Starr & Martz 000116-1 (BISH)
State of Hawaii Hawaiian Islands	Moloka‘i Island	introduced invasive	Oppenheimer, Hank (2007) (p. 21) Voucher cited: Oppenheimer H80503 (BISH)
Kiribati Tungaru (Gilbert) Islands	Tarawa Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (pp. 273-274)
Marshall Islands Ralik Chain	Kwajalein (Kuwajleen) Atoll	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (pp. 273-274)
Marshall Islands Ratak Chain	Majuro (Mãjro) Atoll	introduced cultivated	Vander Velde, Nancy (2003) (p. 121)
Nauru Nauru Island	Nauru Island		Wagner, W. L./ Herbst, D. R./Weitzman, A./Lorence, D.H. (2013)
New Caledonia New Caledonia Archipelago	Île Grande Terre	introduced cultivated	MacKee, H. S. (1994) (p. 123) Vouchers cited: ssp. cymosa var. carnea, MacKee 21958; ssp. quartiniana var. alba, MacKee 21957
Niue Niue	Niue Island	introduced cultivated	Sykes, W. R. (1970) (p. 180) Vouchers cited: CHR 170405, CHR 170406
Palau Palau (Belau ) (main island group)	Koror (Oreor) Island	introduced	Lorence, David H./Flynn, Tim (2010) (p. 40) Voucher cited: Tim Flynn 6339 (PTBG)
Palau Palau (Belau ) (main island group)	Palau Islands (main island group)	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (pp. 273-274)

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)	introduced cultivated	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013) Fujian, Guangdong, Xinjiang
China China	Hong Kong	introduced cultivated	Wu, Te-lin (2001) (p. 270) Ornamental.
Singapore Singapore	Singapore (Republic of)	introduced cultivated	Chong, Kwek Yan/Tan, Hugh T. W./Corlett, Richard T. (2009) (p. 68)

Indian Ocean
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia (Indian Ocean offshore islands) Christmas Island Group	Christmas Island	introduced cultivated	Swarbrick, J. T. (1997) (p. 122)
Comoros Comoro Islands	Comoro Islands		Smith, Albert C. (1988) (p. 351)
French Territory of Mayotte Mayotte Islands	Mayotte Island	introduced invasive cultivated	Oppenheimer, Hank (2010) Envahissant
Seychelles Seychelles Islands	Seychelles Islands	introduced	Invasive Species Specialist Group (2017)

Control:  If you know of control methods for Pentas lanceolata, please let us know.