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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.
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
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Botanical illustration including Petunia parviflorabotanical illustration including Petunia parviflora

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Citation for this treatment: Michael H. Nee 2012, Petunia parviflora, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on July 16, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora,, accessed on July 16, 2024.

Petunia parviflora
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©2014 Keir Morse
Petunia parviflora
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©2014 Keir Morse
Petunia parviflora
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©2008 Neal Kramer
Petunia parviflora
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©2000 John Game
Petunia parviflora
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©2010 Vernon Smith

More photos of Petunia parviflora
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Geographic subdivisions for Petunia parviflora:
CW, SCo, n ChI (Santa Rosa Island), PR, DSon
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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 occurrence).


Data provided by the participants of the  Consortium of California Herbaria.

View all CCH records
All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month Flowering-Fruiting Monthly Counts

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 (fruiting time in some monocot genera).