Jepson eFlora: Taxon page
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Crossosoma bigelovii

Higher Taxonomy
Family: CrossosomataceaeView DescriptionDichotomous Key

Habit: Shrub, small tree. Stem: generally glabrous; branchlets or twigs generally thorny. Leaf: generally deciduous, simple, generally small, generally alternate, entire; stipules minute or 0. Inflorescence: flowers 1. Flower: generally bisexual, radial; hypanthium short; sepals, petals generally 5(3--6), free; petals generally white, ephemeral; stamens 4--50, on or around disk; pistils 1--9, simple, styles short, stigmas head-like, ovules generally 2--many. Fruit: follicles, 1--9. Seed: brown to black, arilled.
Genera In Family: 4 genera, 9 species: western United States, Mexico.
eFlora Treatment Author: Robert E. Preston & James R. Shevock
Scientific Editor: Thomas J. Rosatti.
Genus: CrossosomaView DescriptionDichotomous Key

Leaf: deciduous (or dry when dormant); petiole 0--short. Inflorescence: peduncle bracted or not. Flower: petals 9--15 mm, +- round or oblong, generally white. Fruit: cylindric, surface smooth or net-like, beak 1--2 mm. Seed: generally > 2 per fruit, black, shiny, round to flat; aril conspicuous, fringed, +- yellow.
Species In Genus: 2 species: southern California to Arizona, Mexico. Etymology: (Greek: fringe body, from aril)

Crossosoma bigelovii S. Watson
Habit: Plant 1--2 m. Stem: branchlets thorny. Leaf: elliptic to obovate or spoon-shaped. Flower: sepals +- round; petals 9--12 mm, oblong, white to +- purple, clawed. Fruit: 1--3, 8--10 mm, +- straight. Seed: generally 2--5, +- 2 mm diam.
Ecology: Dry, rocky slopes, canyons; Elevation: 150--1280 m. Bioregional Distribution: e SnBr, e PR, D; Distribution Outside California: Nevada, Arizona, Baja California. Flowering Time: Feb--Apr
eFlora Treatment Author: Robert E. Preston & James R. Shevock
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botanical illustration including Crossosoma bigelovii


Citation for this treatment: Robert E. Preston & James R. Shevock 2017. Crossosoma bigelovii, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 30, 2017.

Citation for the whole project: Jepson Flora Project (eds.) 2017. Jepson eFlora,, accessed on April 30, 2017.

Geographic subdivisions for Crossosoma bigelovii:
e SnBr, e PR, D;
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.
Blue line denotes eFlora flowering time.