Flora of North America species comparison

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Ipomoea tenuiloba

blue morningglory, Lindheimer's morning-glory

spiderleaf

Habit

Perennials.

Perennials, root tuberlike.

Stems

twining.

usually trailing, sometimes twining near tips.

Leaf

blades broadly ovate to reniform, 50–60 × 50–80 mm overall, usually 3–5(–7)-lobed, lobes ± lanceolate, base cordate, surfaces ± hirsute or sericeous.

blades orbiculate, palmatisect, lobes 5–9, lanceolate to linear, 10–70 × 0.5–6.5 mm, surfaces glabrous.

Peduncles

hairy, hairs retrorse, shaggy.

glabrous.

Flowers

sepals lanceolate to lance-ovate, 18–30 × 3–5(–9) mm, herbaceous, base ± dilated, abaxial surface ± hispid;

corolla blue to violet, funnelform, 55–90 mm, limb 60–70 mm diam.

nocturnal;

sepals chartaceous or coriaceous, outers oblong-lanceolate, 5–12 × 2–3 mm, muricate along midrib or ± smooth, margins scarious, apex mucronate, inners obovate-acuminate, 8–9 × 3–4 mm, smooth, margins scarious;

corolla white, limb sometimes purple or pale rose-red, funnelform or salverform, 35–100 mm, limb 30–36 mm diam.

Ipomoea lindheimeri

Ipomoea tenuiloba

Phenology

Flowering Apr–Nov.

Habitat

Oak woodlands, rocky sites, stream bottoms.

Elevation

200–2300 m. (700–7500 ft.)

Distribution

NM; TX; Mexico

[WildflowerSearch map]

[BONAP county map]

sw United States; sc United States; n Mexico

[WildflowerSearch map]

[BONAP county map]

Discussion

Varieties 2 (2 in the flora).

The two varieties of Ipomoea tenuiloba are comparatively easy to distinguish; there are intergrades (G. Yatskievych and C. T. Mason 1984), some approaching I. plummerae.

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

Key

1. Leaf blade lobes 5–7, each to 1.2 mm wide; corollas usually white, limb sometimes pink to lavender, salverform, 65–100 mm; filaments: free portions 8–11 mm.	var. tenuiloba
1. Leaf blade lobes 7–9, each to 6.5 mm wide; corollas: tube white, limb purple to red, funnelform, 35–65 mm; filaments: free portions 14–19 mm.	var. lemmonii

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. cristulata, I. dumetorum, I. hederacea, I. hederifolia, I. imperati, I. indica, I. lacunosa, I. leptophylla, 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. tenuissima, I. ternifolia, I. thurberi, I. tricolor, I. triloba, I. violacea, I. wrightii, I. ×leucantha

Subordinate taxa

I. tenuiloba var. lemmonii, I. tenuiloba var. tenuiloba

Name authority

A. Gray in A. Gray et al.: Syn. Fl. N. Amer. 2(1): 210. (1878)

Torrey in W. H. Emory: Rep. U.S. Mex. Bound. 2(1): 148. (1859)

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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