Ipomoea ochracea (Lindl.) G.Don, Convolvulaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

English: fence morningglory

Habit:  vine

Description:  "Vines; stems twining, herbaceous, up to ca. 3 m long, glabrous.  Leaf blades chartaceous, cordate, 3.5-6 cm long, 3-5 wide, glabrous, margins entire, apex narrowly acuminate to acute, mucronulate, petioles up to 8 cm long.  Flowers solitary, axillary, or few in cymes, pedicels 5-40 mm long; sepals unequal, inner ones ovate, larger than outer ones, ca. 6 mm long, ca. 3 mm wide, apex acute, base rounded, outer ones ca. 5 mm long, ca. 2.5 mm wide, apex acuminate, mucronate, base rounded, all sepals glabrous, minutely verrucose, margins scarious; corolla yellow, purple within tube, funnelform, 2.5-4 cm long.  Capsules brown, ovoid, 1.0-1.5 cm long, 0.5-0.7 cm in diameter, glabrous.  Seeds often 4, sometimes fewer, black, gobose to ovoid, ca. 4 mm in diameter, glabrous to puberulent" (Wagner et al., 1999; p. 559).

Habitat/ecology:  In Hawai‘i, "naturalized in disturbed mesic sites, 15-600 m" (Wagner et al., 1999; p. 559). In New Caledonia, "localement abondant en bords de route" (MacKee, 1994; p. 41). "Malgré le fait que c'est une assez jolie plante ornementale, elle ne semble pas être cultivée dans les jardins et se rencontre spontanément sur sol gravillonnaire en lisière de forêt sèche, sur sables coralliens ou sur alluvions" (Heine, 1984; pp. 76, 78).

Propagation:  Seed

Native range:  Africa.

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 invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 559)
State of Hawaii Hawaiian Islands	Kaua‘i Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 559)
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 559)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 559) Voucher cited: Forbes 2532.O (BISH)
New Caledonia New Caledonia Archipelago	Île Grande Terre	introduced invasive	Tassin, Jacques (2005)
New Caledonia New Caledonia Archipelago	Île Grande Terre	introduced invasive	MacKee, H. S. (1994) (p. 41) Vouchers cited: Baumann 5100, MacKee 6592, Schmid 374, MacKee 26965, MacKee 36912

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia Australia (continental)	Australia (continental)	introduced	U.S. Dept. Agr., Agr. Res. Serv. (2011)
Panama Panama	Panama (Republic of)	introduced	U.S. Dept. Agr., Agr. Res. Serv. (2011)

Additional information:
Additional online information about Ipomoea ochracea is available from the Hawaiian Ecosystems at Risk project (HEAR).

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

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

References:

Heine, Heino. 1984. 13. Convolvulacées. In: Morat, Ph.. et H. S. MacKee. Flore de la Nouvelle-Calédonie et Dépendances. Muséum National d'Histoire Naturelle, Paris.

MacKee, H. S. 1994. Catalogue des plantes introduites et cultivées en Nouvelle-Calédonie. Muséum National d'Histoire Naturelle, Paris, 164 p.

Swarbrick, John T. 1997. Weeds of the Pacific Islands. Technical paper no. 209. South Pacific Commission, Noumea, New Caledonia. 124 pp.

Tassin, Jacques. 2005. Jacques Tassin (IAC-CIRAD), personal communication.

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

U.S. Dept. Agr., Nat. Res. Cons. Serv. 2011. The PLANTS Database. National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

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).