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Vascular Plants of California
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Petunia parviflora

Higher Taxonomy
Family: SolanaceaeView DescriptionDichotomous Key
Habit: Annual to shrub. Leaf: generally simple, generally alternate, generally petioled; stipules 0; blade entire to deeply lobed. Inflorescence: various. Flower: bisexual; calyx lobes generally 5; corolla +- radial, cylindric to rotate, lobes generally 5; stamens 5, on corolla tube, alternate lobes; ovary superior, generally 2-chambered, style 1. Fruit: berry, loculicidal or septicidal capsule, [(drupe)], 2--5-chambered.
Genera In Family: 75 genera, 3000 species: worldwide, especially +- tropics; many alien weeds in California; many cultivated for food, drugs, or ornamental (potato, tomato, peppers, tobacco, petunia). Toxicity: many TOXIC. Note: Nicandra physalodes (L.) Gaertn. is a waif.
eFlora Treatment Author: Michael H. Nee
Scientific Editor: Thomas J. Rosatti.
Genus: PetuniaView Description 

Habit: Annual, perennial herb, sticky-glandular. Stem: main branches from base, with +- long internodes. Leaf: +- opposite near flowers, entire. Inflorescence: flowers 1 in axils of leaves or leaf-like bracts. Flower: calyx divided +- to base, lobes +- leaf-like, especially in fruit; corolla funnel-shaped, 5-lobed; stamens +- equal or 1 short, 2 medium, 2 long. Fruit: capsule. Seed: many, minute, angled.
Species In Genus: +- 30 species: generally South America; some cultivated for ornamental, sometimes waifs. Etymology: (Petun, Native American word for tobacco) Note: Petunia axillaris (Lam.) Britton, Sterns & Poggenb., Petunia violacea Lindl. may be naturalized in California.
Unabridged Note: Evidence from chloroplast DNA, morphology, and ecology was used by Fregonezi et al. [Taxon 61:120--130. 2012] to support segregation of Calibrachoa from Petunia, as well as recognition of Calibrachoa parviflora (Juss.) D'Arcy, which was said to occur "in North America and Europe, probably as a result of introduction from South America and subsequent naturalization".
Petunia parviflora Juss.
Stem: prostrate to decumbent, < 4 dm, rooting at nodes; axillary branches short, leafy. Leaf: 5--14 mm, +- oblanceolate, fleshy, +- sessile. Flower: calyx lobes 3--6 mm, < 11 mm in fruit, elliptic to narrowly obovate; corolla 4--6 mm, +- purple, tube +- white. Fruit: 2--3 mm. Seed: pale brown.
Ecology: Open washes, dry streambeds; Elevation: < 1300 m. Bioregional Distribution: CW, SCo, n ChI (Santa Rosa Island), PR, DSon; Distribution Outside California: to southwestern Utah, southeastern United States, Mexico; also South America; waif elsewhere in United States. Flowering Time: Apr--Aug Note: Widely treated in Calibrachoa, which is the sister group of Petunia [Kulcheski et al. 2006 Genetica 126:3--14]; treated in Calibrachoa also by Fregonezi et al. [Taxon 61:120--130. 2012], who regarded it as probably native to South America, naturalized in North America, Europe.
Synonyms: Calibrachoa parviflora (Juss.) D'Arcy;
Jepson eFlora Author: Michael H. Nee
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Botanical illustration including Petunia parviflora

botanical illustration including Petunia parviflora


Citation for this treatment: Michael H. Nee 2012, Petunia parviflora, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on December 15, 2018.

Citation for the whole project: Jepson Flora Project (eds.) 2018, Jepson eFlora,, accessed on December 15, 2018.

Petunia parviflora
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© 2000 John Game
Petunia parviflora
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© 2014 Keir Morse
Petunia parviflora
click for enlargement
© 2014 Keir Morse
Petunia parviflora
click for enlargement
© 2014 Keir Morse
Petunia parviflora
click for enlargement
© 2014 Keir Morse
Petunia parviflora
click for enlargement
© 2014 Keir Morse

More photos of Petunia parviflora in CalPhotos

Geographic subdivisions for Petunia parviflora:
CW, SCo, n ChI (Santa Rosa Island), PR, DSon;
Markers link to CCH specimen records. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
map of distribution 1
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).

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Data provided by the participants of the Consortium of California Herbaria.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time.