Flora of North America species comparison

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Convolvulus crenatifolius

Convolvulus arvensis

bindweed, European bindweed, European morning glory, field bindweed, field morning-glory, morning glory, orchard morning-glory, small-flower morning glory
Habit Perennials, rhizomatous.
Stems

decumbent or trailing, to 10+ dm, glabrous or glabrate.
Leaf

blades elliptic, oblong-elliptic, ovate, ovate-deltate, or ovate-lanceolate, 10–100 × 3–60 mm, length 1.6–3.3 times width, surfaces glabrous or abaxial puberulent.
Inflorescences

flowers solitary or in 2–3-flowered cymes;

bracts elliptic, linear, or obovate, 2–3(–9) mm.
Flowers

sepals: outer elliptic, 3–4.5 mm, inner suborbiculate to obovate, 3.5–5 mm;

corolla white, sometimes pink-tinged, campanulate, 12–25(–30) mm, limb 5-angled.
Seeds

tuberculate.
2n

= 48, 50.

Convolvulus crenatifolius

Convolvulus arvensis
Phenology Flowering Apr–Oct.
Habitat Fields, disturbed sites, roadsides.
Elevation -30–3000 m. [-100–9800 ft.]
Distribution
South America; Texas
from USDA
Introduced
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies 2 (1 in the flora).

Subspecies montevidensis (Sprengel) J. R. I. Wood & Scotland is known from Argentina, Bolivia, Brazil, Paraguay, and Uruguay.

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

Convolvulus arvensis is a major agricultural pest and is difficult to control. Numerous medicinal uses have been attributed to C. arvensis (D. F. Austin 2000).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Parent taxa Convolvulaceae > Convolvulus Convolvulaceae > Convolvulus
Sibling taxa
C. arvensis, C. equitans, C. simulans
C. crenatifolius, C. equitans, C. simulans
Subordinate taxa
C. crenatifolius subsp. crenatifolius
Synonyms C. ambigens, Strophocaulos arvensis
Name authority Ruiz & Pavon: Fl. Peruv. 2: 10, plate 118, fig. a. (1799) Linnaeus: Sp. Pl. 1: 153. (1753)
Source FNA vol. 14. Treatment author: Daniel F. Austin†. FNA vol. 14. Treatment author: Daniel F. Austin†.
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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