Jepson eFlora: Taxon page
Key to families | Table of families and genera
Previous taxon Index to accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
Next taxon
Tropaeolum majus

Higher Taxonomy
Family: TropaeolaceaeView Description 

Habit: Annual, perennial herb, +- fleshy, generally +- glabrous; often twining by petioles; roots tuber-like or not. Stem: prostrate. Leaf: generally simple, generally alternate, peltate [(or not)]; blade << petiole, entire, toothed, lobed, or dissected, veins generally palmate; stipules often 0. Inflorescence: flower generally 1 on long, axillary pedicel. Flower: showy, bisexual, generally bilateral; sepals 5, uppermost (adaxial) generally long-spurred; petals generally 5, clawed, upper 2 unlike lower 3; stamens 8, in 2 whorls, unequal; ovary superior, lobes 3, chambers 3, placentas axile, style 1, >> ovary, 3-parted near tip, stigmas 3. Fruit: separating into 3 generally nut-like, 1-seeded segments (= mericarps).
Genera In Family: 1 genus, +- 90 species: Mexico to South America; some cultivated.
Unabridged Note: 2 additional stamens opposite petals +- abortive.
eFlora Treatment Author: Robert E. Preston & Elizabeth McClintock
Scientific Editor: Thomas J. Rosatti.
Genus: TropaeolumView Description 

Etymology: (Greek: trophy, from shield-like leaves)

Tropaeolum majus L.
Stem: > 1 m. Leaf: petiole 5--25 cm; blade 3--12 cm wide, round to +- reniform, veins palmate. Inflorescence: peduncle < 20 cm. Flower: 2.5--6 cm diam; sepals > 2 cm, +- ovate, +- tan, nectar spur > 3 cm; petals > 4.5 cm, generally orange or yellow with +- orange marks, claws of lower 3 > 1.5 cm, fringed near top. Fruit: > 1.5 cm, > 2 cm wide; segments broadly ovate, deeply lobed.
Ecology: Disturbed areas, moist or shaded areas in coastal scrub, wooded flats or slopes; Elevation: < 450 m. Bioregional Distribution: NCo, CCo, SnFrB, SCo, s ChI; Distribution Outside California: Abundantly cultivated, often naturalized. Flowering Time: Mar--Jun Note: Originated in cultivation.
eFlora Treatment Author: Robert E. Preston & Elizabeth McClintock
Jepson Online Interchange

Previous taxon: Tropaeolum
Next taxon: Ulmaceae

Name Search


Citation for this treatment: Robert E. Preston & Elizabeth McClintock 2016. Tropaeolum majus, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 04, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 04, 2016.

Tropaeolum majus
click for enlargement
© 2009 Neal Kramer
Tropaeolum majus
click for enlargement
© 2009 Neal Kramer
Tropaeolum majus
click for enlargement
© 2009 Neal Kramer
Tropaeolum majus
click for enlargement
© 2009 Neal Kramer

More photos of Tropaeolum majus in CalPhotos

Geographic subdivisions for Tropaeolum majus:
NCo, CCo, SnFrB, SCo, s ChI;
Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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).

View elevation by latitude chart
Data provided by the participants of the Consortium of California Herbaria.
View all CCH records

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.