Flora of North America species comparison

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Ipomoea alba

Ipomoea pubescens

moon flower, tropical white morning-glory

silky morning-glory
Habit Perennials. Perennials, root oblong, relatively large.
Stems

twining, usually prickly, sometimes rooting at nodes.

twining.
Leaf

blades broadly ovate to triangular or 3–5-lobed, 50–150 × 50–150 mm, base cordate, surfaces usually glabrous, rarely hairy.

blades cordate, ovate, or 3–5-lobed, 20–80 × 20–90 mm, base cordate, lobes elliptic to ovate, surfaces ± hirsute or coarsely sericeous.
Peduncles

glabrous.

hairy, hairs retrorse or spreading.
Flowers

nocturnal;

sepals ovate, 7–15 mm, ± coriaceous, apex acute, outers each with midrib extending as ± corniform appendage;

corolla white, throat green-banded inside, salverform, 70–150 mm.

sepals lance-ovate to ovate, 9–21 × 2–11 mm, herbaceous, abaxial surface ± hispid or coarsely sericeous;

corolla blue to violet, funnelform, 55–80 mm, limb 60–70 mm diam.
Fruits

20–30 mm.

2n

= 30.

Ipomoea alba

Ipomoea pubescens
Phenology Flowering Sep–May. Flowering Aug–Sep.
Habitat Forest margins, swamps, moist sites. Rocky sites, stream beds, oak woodlands.
Elevation 0–100 m. (0–300 ft.) 100–1600 m. (300–5200 ft.)
Distribution
from FNA
FL; LA; SC; TX; Mexico; Central America; South America; West Indies [Introduced in North America; introduced also in Asia]
[WildflowerSearch map]
[BONAP county map]
from FNA
AZ; NM; TX; Mexico; South America
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 14. FNA vol. 14.
Parent taxa Convolvulaceae > Ipomoea Convolvulaceae > Ipomoea
Sibling taxa
I. amnicola, I. aquatica, I. asarifolia, I. barbatisepala, I. batatas, I. cairica, I. capillacea, I. cardiophylla, I. carnea, I. coccinea, I. cordatotriloba, I. costellata, I. cristulata, I. dumetorum, I. hederacea, I. hederifolia, I. imperati, I. indica, I. lacunosa, I. leptophylla, I. lindheimeri, I. longifolia, I. macrorhiza, I. microdactyla, I. muricata, I. nil, I. pandurata, I. pes-caprae, I. plummerae, I. pubescens, I. purpurea, I. quamoclit, I. rupicola, I. sagittata, I. setosa, I. shumardiana, I. sloteri, I. tenuiloba, I. tenuissima, I. ternifolia, I. thurberi, I. tricolor, I. triloba, I. violacea, I. wrightii, I. ×leucantha
I. alba, I. amnicola, I. aquatica, I. asarifolia, I. barbatisepala, I. batatas, I. cairica, I. capillacea, I. cardiophylla, I. carnea, I. coccinea, I. cordatotriloba, I. costellata, I. cristulata, I. dumetorum, I. hederacea, I. hederifolia, I. imperati, I. indica, I. lacunosa, I. leptophylla, I. lindheimeri, I. longifolia, I. macrorhiza, I. microdactyla, I. muricata, I. nil, I. pandurata, I. pes-caprae, I. plummerae, I. purpurea, I. quamoclit, I. rupicola, I. sagittata, I. setosa, I. shumardiana, I. sloteri, I. tenuiloba, I. tenuissima, I. ternifolia, I. thurberi, I. tricolor, I. triloba, I. violacea, I. wrightii, I. ×leucantha
Synonyms Calonyction aculeatum, Convolvulus aculeatus
Name authority Linnaeus: Sp. Pl. 1: 161. (1753) Lamarck in J. Lamarck and J. Poiret: Tabl. Encycl. 1: 465. (1793) — (as Ipomaea)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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