FNA: Ipomoea cristulata vs. Ipomoea thurberi

	Ipomoea cristulata	Ipomoea thurberi
	star-glory, trans-Pecos morning-glory	Thurber's morning-glory
Habit	Annuals.	Perennials, root elongate, tuberous.
Stems	twining.	trailing or twining.
Leaf	blades usually (3–)5–7-lobed, middle lobe narrowly ± rhombic, sometimes proximal blades cordate to ovate, not lobed, 15–100 × 10–70 mm, base cordate to ± truncate, basal lobes rounded to pointed, margins ± dentate, surfaces glabrous or abaxial pilose.	blades ± sagittate, 10–50 × 20–65 mm overall, base sagittate, or blades palmatisect, lobes 5–7, lanceolate, linear, or oblong, surfaces sparsely strigose.
Peduncles	glabrous.	glabrous.
Flowers	diurnal, sepals chartaceous to membranous, outers oblong, 3–3.5 mm, apex obtuse, rounded, or ± truncate, each with ± terminal corniform appendage 3–5 mm, glabrous, inners oblong, 4–5.7 mm, apex obtuse to truncate, each with ± terminal corniform appendage 2.5–3.5 mm; corolla red or red-orange, salverform, 18–26 mm, limb 10–15 mm diam. 2n = 30.	nocturnal; sepals lanceolate to lance-linear, 12–15 × 3–4 mm, ± herbaceous, base obscurely warty or not, apex acuminate, setaceous-caudate; corolla white, tube green, limb red, rose, drying purple, funnelform-salverform, 50–80 mm, limb 50–65 mm diam.

	Ipomoea cristulata	Ipomoea thurberi
Phenology	Flowering May–Nov.	Flowering Aug–Sep.
Habitat	Chaparral, grasslands, oak woodlands, ponderosa pine zones.	Oak woodlands, rocky sites.
Elevation	700–2800 m. (2300–9200 ft.)	1100–1600 m. (3600–5200 ft.)
Distribution	AZ; IA; KS; NM; TX; Mexico [WildflowerSearch map] [BONAP county map]	AZ; Mexico (Chihuahua, Sonora) [BONAP county map]
Discussion	Reports of Ipomoea cristulata from Iowa and Kansas may be based on cultivated plants; the report for Minnesota probably resulted from typographic error: MN for NM; the report for South Carolina was based on a specimen of I. coccinea. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 14.	FNA vol. 14.
Parent taxa	Convolvulaceae > Ipomoea	Convolvulaceae > Ipomoea
Sibling taxa	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. 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. pubescens, I. purpurea, I. quamoclit, I. rupicola, I. sagittata, I. setosa, I. shumardiana, I. sloteri, I. tenuiloba, I. tenuissima, I. ternifolia, I. tricolor, I. triloba, I. violacea, I. wrightii, I. ×leucantha
Synonyms	Quamoclit gracilis	I. gentryi
Name authority	Hallier f.: Meded. Rijks-Herb. 46: 20. (1922)	A. Gray in A. Gray et al.: Syn. Fl. N. Amer. 2(1): 212. (1878)
Web links	Local Web sites: KS Wildflowers WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	WildflowerSearch iNaturalist (observations) USDA Plants Database LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Ipomoea thurberi

star-glory, trans-Pecos morning-glory

Thurber's morning-glory

Habit

Annuals.

Perennials, root elongate, tuberous.

Stems

twining.

trailing or twining.

Leaf

blades usually (3–)5–7-lobed, middle lobe narrowly ± rhombic, sometimes proximal blades cordate to ovate, not lobed, 15–100 × 10–70 mm, base cordate to ± truncate, basal lobes rounded to pointed, margins ± dentate, surfaces glabrous or abaxial pilose.

blades ± sagittate, 10–50 × 20–65 mm overall, base sagittate, or blades palmatisect, lobes 5–7, lanceolate, linear, or oblong, surfaces sparsely strigose.

Peduncles

glabrous.

Flowers

diurnal, sepals chartaceous to membranous, outers oblong, 3–3.5 mm, apex obtuse, rounded, or ± truncate, each with ± terminal corniform appendage 3–5 mm, glabrous, inners oblong, 4–5.7 mm, apex obtuse to truncate, each with ± terminal corniform appendage 2.5–3.5 mm;

corolla red or red-orange, salverform, 18–26 mm, limb 10–15 mm diam. 2n = 30.

nocturnal;

sepals lanceolate to lance-linear, 12–15 × 3–4 mm, ± herbaceous, base obscurely warty or not, apex acuminate, setaceous-caudate;

corolla white, tube green, limb red, rose, drying purple, funnelform-salverform, 50–80 mm, limb 50–65 mm diam.

Ipomoea cristulata

Ipomoea thurberi

Phenology

Flowering May–Nov.

Flowering Aug–Sep.

Habitat

Chaparral, grasslands, oak woodlands, ponderosa pine zones.

Oak woodlands, rocky sites.

Elevation

700–2800 m. (2300–9200 ft.)

1100–1600 m. (3600–5200 ft.)

Distribution

AZ; IA; KS; NM; TX; Mexico

[WildflowerSearch map]

[BONAP county map]

AZ; Mexico (Chihuahua, Sonora)

[BONAP county map]

Discussion

Reports of Ipomoea cristulata from Iowa and Kansas may be based on cultivated plants; the report for Minnesota probably resulted from typographic error: MN for NM; the report for South Carolina was based on a specimen of I. coccinea.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source

FNA vol. 14.

Parent taxa

Convolvulaceae > Ipomoea

Sibling taxa

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. 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. pubescens, I. purpurea, I. quamoclit, I. rupicola, I. sagittata, I. setosa, I. shumardiana, I. sloteri, I. tenuiloba, I. tenuissima, I. ternifolia, I. tricolor, I. triloba, I. violacea, I. wrightii, I. ×leucantha

Synonyms

Quamoclit gracilis

I. gentryi

Name authority

Hallier f.: Meded. Rijks-Herb. 46: 20. (1922)

A. Gray in A. Gray et al.: Syn. Fl. N. Amer. 2(1): 212. (1878)

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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Flora of North America species comparison

Ipomoea cristulata

Ipomoea thurberi

Ipomoea cristulata

Ipomoea thurberi