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violet-flower petunia


1–7 dm.


blades: proximalmost oblanceolate, distalmost lanceolate to ovate, 1.4–7.2 (including petiole) × 0.3–3 cm, margins entire.


1–6 cm.


calyx 5–14 mm, lobes 3–11 mm;

corolla rose-purple (drying deep violet), veins sometimes darker rose-purple or violet (not distinct from rest of corolla when dried), funnelform with slight abaxial bulge in the tube, tube 1–3 cm, limb 1–4 cm diam.;

stamens inserted at base of corolla tube, longest 2 surpassing style;

anthers and pollen blue to violet;

filaments light purple to green;

pistil 1–2.2 cm.


3–9 mm.


= 14.

Petunia integrifolia

Phenology Flowering May–Oct.
Habitat Waste places, along railroads and roadsides, poor soil or sand.
Elevation 0–400 m. (0–1300 ft.)
from FNA
AL; CA; CT; DC; FL; IL; MA; MD; ME; NC; NH; NJ; NY; OH; PA; RI; TX; WI; WV; South America (Argentina, Brazil, Paraguay) [Introduced in North America]
[BONAP county map]

Naturalized populations of Petunia integrifolia appear to have been more common prior to the 1960s, based on herbarium specimens.

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

Source FNA vol. 14.
Parent taxa Solanaceae > Petunia
Sibling taxa
P. axillaris, P. ×atkinsiana
Synonyms Salpiglossis integrifolia, P. violacea
Name authority (Hooker) Schinz & Thellung: Vierteljahrsschr. Naturf. Ges. Zürich 60: 361. (1915)
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