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
Peritoma arborea

Higher Taxonomy
Family: CleomaceaeView DescriptionDichotomous Key

Habit: Annual, perennial herb, shrub, often ill-smelling. Leaf: generally 1-palmate, generally alternate, generally petioled; stipules generally minute, often bristle-like or hairy; leaflets 0 or 3--7. Inflorescence: raceme, head, or flowers 1, expanded in fruit; bracts generally 3-parted below, simple above, or 0. Flower: generally bisexual, radial to +- bilateral; sepals generally 4, free or fused, generally persistent; petals generally 4, free, +- clawed; stamens generally 6, free, exserted, anthers generally coiling at dehiscence; ovary superior, generally on stalk-like receptacle, chamber generally 1, placentas generally 2, parietal, style 1, persistent, stigma generally minute, +- head-like. Fruit: 2 nutlets or generally capsule, septicidal; valves generally 2, deciduous, leaving septum (frame-like placentas) behind; pedicel generally +- reflexed to spreading.
Genera In Family: 17 genera, +- 150 species: widespread tropics to arid temperate. Note: Treated as Capparaceae in TJM (1993).
eFlora Treatment Author: Robert E. Preston & Staria S. Vanderpool
Scientific Editor: Thomas J. Rosatti.
Genus: PeritomaView DescriptionDichotomous Key

Common Name: BEE PLANT
Habit: Annual, shrub, glabrous to densely glandular-hairy. Stem: generally branched from upper nodes. Leaf: petiole 5--45 mm; leaflets 3--5. Inflorescence: raceme, terminal, generally 1--4 cm, generally 5--40 cm in fruit; pedicels 4--20 mm. Flower: often +- unisexual (stamens or pistils vestigial), +- bilateral, parts generally yellow; sepals free or fused, deciduous above base; petal claw 0 to short. Fruit: longer than wide; septum linear to oblong; receptacle stalk-like, reflexed to ascending. Seed: 10--40.
Species In Genus: 6 species. Etymology: (Greek: cutting all-around, from calyx)

Peritoma arborea (Nutt.) H.H. Iltis
Habit: Shrub, much branched, generally 5--20 dm, minutely hairy. Leaf: petiole 1--3 cm; leaflets generally 3, 15--45 mm, oblong-elliptic. Inflorescence: 1--30 cm; pedicels 8--15 mm, thicker in fruit. Flower: sepals fused in basal 1/2, 4--7 mm, +- entire, green; petals 8--14 mm, 4--5 mm wide, yellow, claw 0; stamens 15--25 mm, yellow, anthers 2--2.5 mm; style 0.9--1.2 mm or pistil aborting in bud. Fruit: capsule, 3--6 cm, 1--2.5 cm wide, inflated, smooth, leathery, light brown, tardily dehiscent; valves 2--3; receptacle stalk-like, 1--2 cm, stout, reflexed or not. Chromosomes: 2n=34,40.
Note: Varieties +- distinct.
Synonyms: Isomeris arborea Nutt.
eFlora Treatment Author: Robert E. Preston & Staria S. Vanderpool
Jepson Online Interchange

Previous taxon: Peritoma
Next taxon: Peritoma arborea var. angustata

Name Search


Citation for this treatment: Robert E. Preston & Staria S. Vanderpool 2016. Peritoma arborea, 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.

Peritoma arborea var. arborea
click for enlargement
© 2013 Keir Morse
Peritoma arborea
click for enlargement
© 2010 Steve Matson
Peritoma arborea var. arborea
click for enlargement
© 2013 Keir Morse
Peritoma arborea var. arborea
click for enlargement
© 2015 California Academy of Sciences
Peritoma arborea var. globosa
click for enlargement
© 2013 Neal Kramer
Peritoma arborea
click for enlargement
© 2010 Neal Kramer

More photos of Peritoma arborea in CalPhotos

Geographic subdivisions for Peritoma arborea:
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.