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Conioselinum pacificum

Higher Taxonomy
Family: Apiaceae (Umbelliferae)View DescriptionDichotomous Key

Habit: Annual to perennial herb [shrub, tree], generally from taproot. Stem: generally +- scapose, generally ribbed, hollow. Leaf: basal and generally cauline, generally alternate; stipules generally 0; petiole base generally sheathing stem; blade generally much dissected, occasionally compound. Inflorescence: umbel or head, simple or compound, generally peduncled; bracts present in involucres or 0; bractlets generally present in "involucels". Flower: many, small, generally bisexual (or some staminate), generally radial (or outer bilateral); calyx 0 or lobes 5, small; petals 5, free, generally ovate or spoon-shaped, generally incurved at tips, generally +- ephemeral; stamens 5; pistil 1, ovary inferior, 2-chambered, generally with a +- conic, persistent projection or platform at tip subtending 2 free styles. Fruit: 2 dry, 1-seeded halves (= mericarps), separating from each other but generally +- persistent to central axis; ribs on halves 5, 2 marginal, 3 to back; oil tubes 1--several per interval between ribs.
Genera In Family: 300 genera, 3000 species: +- worldwide, especially temperate; many cultivated for food or spice (e.g., Carum, caraway; Daucus; Petroselinum); Bupleurum lancifolium Hornem. is historical garden weed; some toxic (e.g., Conium). Note: Mature fruit generally critical in identification, shape given in outline. Hydrocotyle moved to Araliaceae. Petroselinum crispum (Mill.) A.W. Hill is a waif.
eFlora Treatment Author: Lincoln Constance & Margriet Wetherwax, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: ConioselinumView Description 

Habit: Perennial herb, taprooted or short-rhizomed, glabrous or +- scabrous in inflorescence. Stem: erect, branched. Leaf: blade ovate to widely triangular, 1--4-pinnately or -ternate-pinnately dissected or compound; segments or leaflets toothed or lobed to deeply cut; sheaths conspicuously dilated. Inflorescence: umbels compound; bracts generally 0; bractlets generally present, +- scarious; rays, pedicels many, spreading-ascending. Flower: calyx lobes 0 or minute; petals wide, white, tip notched. Fruit: oblong to ovate, compressed front-to-back; marginal ribs thin-winged, wide, abaxial low, corky, or all ribs winged; oil tubes 1--4 per rib-interval; fruit axis divided to base. Seed: face flat or +- concave.
Species In Genus: +- 10 species: North America, Eurasia. Etymology: (Combined generic names Conium + Selinum)

Conioselinum pacificum (S. Watson) J.M. Coult. & Rose
Habit: Plant 10--40 dm. Leaf: triangular-ovate; petiole 3--15 cm; blade 0.5--2 dm, 2--3-pinnate, leaflets 1--5 cm, oblong to ovate, coarsely serrate, pinnately cut. Inflorescence: terminal and generally some lateral; peduncles 6--20 cm; rays 15--30, 2--4 cm, spreading-ascending; bractlets narrow, scarious; pedicels 5--10 mm. Fruit: 5--8 mm, oblong to oblong-ovate; ribs winged, marginal widest. Chromosomes: 2n=44.
Ecology: Ocean bluffs, generally in coastal scrub; Elevation: < 400 m. Bioregional Distribution: NCo, CCo; Distribution Outside California: to Alaska; northern Japan. Flowering Time: Jun--Aug
Synonyms: Conioselinum chinense (L.) Britton, Sterns, & Poggenb.
eFlora Treatment Author: Lincoln Constance & Margriet Wetherwax
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botanical illustration including Conioselinum pacificum


Citation for this treatment: Lincoln Constance & Margriet Wetherwax 2016. Conioselinum pacificum, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on May 06, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on May 06, 2016.

Conioselinum pacificum
click for enlargement
© 2011 Steve Matson
Conioselinum pacificum
click for enlargement
© 2011 Steve Matson
Conioselinum pacificum
click for enlargement
© 2011 Steve Matson
Conioselinum pacificum
click for enlargement
© 2011 Steve Matson
Conioselinum pacificum
click for enlargement
© 2011 Steve Matson

More photos of Conioselinum pacificum in CalPhotos

Geographic subdivisions for Conioselinum pacificum:
NCo, CCo;
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.
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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.