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Ipomoea ochracea

(Lindl.) Sweet (1830)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-Asterids Order: Solanales Family: Convolvulaceae Genus: Ipomoea

yellow morning glory

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Description

Key Characters:

Growth Form: Vines.

Stems: Stems twining, herbaceous, up to ca. 3 m long, glabrous.

Roots:

Leaves: Leaves simple, rarely compound. Alternate. Blades cordate, 3.5-6 cm long, 3-5 cm wide. Apex narrowly acuminate to acute, mucronulate. Base acute, cordate to truncate, petiolate, subsessile, or sessile. Surfaces glabrous; blades chartaceous. Margins entire. Petioles up to 8 cm long. Stipules absent.

Flowers: Flowers solitary, axillary, or few in cymes, pedicels 5-40 mm long; bracts scale-like to foliose. Flowers bisexual (perfect), actinomorphic, 5-merous. Calyx of 5 sepals, distinct, imbricate, herbaceous to subcoriaceous, 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; often somewhat enlarging in fruit but not markedly accrescent, persistent, occasionally accrescent. Corolla of 5 fused petals; petals yellow, purple within tube, funnelform, 2.5-4 cm long. Stamens 5, distinct; included or rarely exserted; filaments inserted on corolla tube base alternate with corolla lobes; anthers dithecal, usually linear or oblong, extrorse. Ovary superior, 2–4-carpellate, usually with as many cells, placentation basal or basal-axile; ovules 2(4, 6) per cell, or ovary 1-celled and ovules 4, these erect, anatropous; style 1, filiform, simple or bifid, or sometimes with 2 distinct style; stigma globose or 2–3-lobed, the lobes globose.

Fruit: Capsules brown; ovoid; 1-1.5 cm long; 0.5-0.7 cm in diameter; glabrous; dehiscent by 4 valves or rarely 6 valves; or splitting irregularly. Seeds often 4; sometimes fewer; black; globose to ovoid; ca. 4 mm in diameter; glabrous to puberulent ; endosperm absent or scanty; cartilaginous; cotyledons usually foliaceous.

Ploidy: 2n = 30

Habitat: Naturalized in disturbed mesic sites.

Elevation Range: 15–600 m.

Historical Distribution

Images

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Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

Kaua'i Naturalized
O'ahu Naturalized
Lana'i Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents


Pollinators

Bibliography

Name Published In: Hort. Brit., ed. 2: 371 (1830)

Other References

Wagner et al. 1990:559 (K, O, M, H); Staples & Herbst 2005:247 (KEY), 250 (DESCR); Oppenheimer & Bogner 2019:22 (L)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Ipomoea ochracea Lihue District. Wailua Homesteads, at the end of Crossley Road and beginning of NouNou Trail. Common along the uncultivated property boundaries in a residental area. With Cinnamomum camphora, Schinus terebinthifolius. Preserved_Specimen Vine climbing to 2 metrers; corolla tube thin, yellow with dark purple in the center. No detectable fragrance. Brock, K. 756 Kauai BISH 2015-11-24
2 Ipomoea ochracea Waianae Mts, winward side. Pahole Natrual Area Reserve. Drainaage #4 Gully floor on Pipturus. Flowers yellow. Preserved_Specimen Obata, J.K. Oahu BISH 1991-12-05
3 Ipomoea ochracea Honolulu, Woodlawn Drive full sun Preserved_Specimen vine with stems many meters long climbing on vegetation and trailing on ground. Corolla creamy yellow to lemon yellow, with purple deep within the tube. Lau, J. 1711 Oahu BISH 1985-12-05
4 Ipomoea ochracea Wailua Homesteads, Puuopae Rd., 0.2 miles from junction with Opaekaa Rd roadside in weedy field Preserved_Specimen Vine; corolla yellow with base of tube magenta Flynn, T.W. 1511 Kauai BISH 1986-02-11
5 Ipomoea ochracea Honolulu, along Manoa Stream at the foot of Waahila Ridge, along edge of Kanewai Field climbing over low shrubs and trailing along the ground Preserved_Specimen vine; flowers showy Nagata, K.M. 1243 Oahu BISH 1974-11-13
6 Ipomoea ochracea Kahaluu, farm belonging to S. Yogi Infesting trees and shrubbery, covering hau. Preserved_Specimen Vine, flower buds white; corolla yellow, purple on base inside tube. Hamasaki, R.T. Oahu BISH 1999-01-11
7 Ipomoea ochracea Honolulu, Kalihi Valley roadside Preserved_Specimen prostrate, forming a tangled mat, flowers bright yellow with maroon at bottom of throat, anthers white, straight Fosberg, F.R. 57420 Oahu BISH 1978-03-27
8 Ipomoea ochracea Waianae Mts, winward side. Pahole Natrual Area Reserve. Drainaage #4 Gully floor on Pipturus. Flowers yellow. Preserved_Specimen Obata, J.K. Oahu BISH 1991-12-05
9 Ipomoea ochracea Kona, Hookena Preserved_Specimen vine with dark yellow flowers with a purple throat Herbst, D.R. 5631 Hawaii BISH 1976-01-21
10 Ipomoea ochracea Pahole Gulch, Waialua, Waianae Mts Open canopy of Metrosideros, Antidesma and Acacia koa with understory of Commelina, Paspalum conjugatum and Rubus Preserved_Specimen flowers dark yellow with purple at throat. Aggressive vine climbing over surrounding vegetation to 15' ht. Nagata, K.M. 1597 Oahu BISH 1978-03-14
11 Ipomoea ochracea Vicinity of Lanai Airport Growing in waste area on Lantana camara and Urochloa maxima Preserved_Specimen Vines; flowers bright yellow. Oppenheimer, H.L. 31919 Lanai BISH 2019-03-14
12 Ipomoea ochracea East Maui, Hamakuapoko, along Holomua road just mauka of the old Maui High School campus Preserved_Specimen Trailing and twining among low brush and forming a dense mat on a rock wall. Corolla about 4 cm across, bright yellow with a small but well defined purple center Hobdy, R.W. 2319 Maui BISH 1985-03-29
13 Ipomoea ochracea Hoea Open, grassy median, periodically mown UNKNOWN . Coordinates do not match to country in source data. Not found a country in reverser geocoding. Bioversity International G. J. Ray Oahu HAPI 2/13/1998
14 Ipomoea ochracea U.H. Manoa Campus Preserved_Specimen vine with dark yellow flowers with a deep purple throat Herbst, D.R. 5264 Oahu BISH 1975-04-03
15 Ipomoea ochracea Kamehameha School grounds Preserved_Specimen Forbes, C.N. 2532 Oahu BISH 1919-03-08
16 Ipomoea ochracea Kamehameha Schools Grounds Preserved_Specimen Forbes, C.N. 2532 Oahu BISH 1919-03-03
17 Ipomoea ochracea Honolulu, Tantalus Round Top Dr across from gate to Puu Ualakaa, grassy median; with Leucaena leucocephala, Anredera cordifolia Preserved_Specimen vine to 3 m long; corolla yellow, purple within tube; leaves cordate Ray, G. 85 Oahu BISH 1998-02-13
18 Ipomoea ochracea Honolulu, University Ave weed patch Preserved_Specimen vine climbing over bushes; fls. bright butter-yellow Fosberg, F.R. 13340 Oahu BISH 1936-11-24
19 Ipomoea ochracea W Maui, Wailuku, Vineyard Street near Market St. and Four Sisters Bakery Growing in a vacant lot. Preserved_Specimen Vine; flowers yellow. Abbott, I.A. Maui BISH 1999-11-25
20 Ipomoea ochracea Kailua; Low swampy area along Kailua Rd. just seaward of Kapaa Quarry Rd Climbing on Leucaena shrubs at edge of stream. Intermingled with Ipomoea obscura and Ipomoea indica, Coccinia, Paederia. Preserved_Specimen Vines to 10' tall. Flowers butter yellow with maroon center, no odor at 1 p.m. Staples, G.W. 1133 Oahu BISH 1996-12-08
21 Ipomoea ochracea Hamakupoco School near Paia between cane field and road Preserved_Specimen Flowers orange Austin, D.F. 7461 Maui BISH 1985-05-13
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