Directory       News       Site Map       Home
    Jepson eFlora: Taxon page
Key to families | Table of families and genera

Previous taxon Indexes to all 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 |
Previous taxon


Lincoln Constance & Margriet Wetherwax, except as noted

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.
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). Mature fruit generally critical in identification, shape given in outline. Hydrocotyle moved to Araliaceae. Petroselinum crispum (Mill.) A.W. Hill is a waif. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.

Key to Apiaceae

Annual, taprooted, glabrous. Stem: decumbent to erect, generally loosely branched. Leaf: sessile or petioled; blade oblong to triangular-ovate, pinnately or ternate-pinnately dissected or compound, segments or leaflets generally thread-like to linear. Inflorescence: umbels compound or some simple; bracts, bractlets 0; rays few; rays, pedicels spreading. Flower: calyx lobes 0; petals oblong, white, tips not incurved. Fruit: elliptic to narrowly ovate, compressed side-to-side, glabrous [hairy]; ribs ± equal, thread-like to prominent and corky; oil tube 1 per rib-interval; fruit axis shallowly notched. Seed: face flat.
3 species: South America, 1 ± worldwide aggressive weed. (Greek: circular seed) "Ciclospermum" in TJM (1993).

C. leptophyllum (Pers.) Britton & P. Wilson
Plant 0.5–6 dm. Leaf: 3.5–10 cm; petiole 2.5–12 mm, generally 0 on cauline leaves, sheath margin scarious; segments 3–15 mm, thread-like to linear, entire. Inflorescence: < 2 cm, generally some sessile; rays 1–3; pedicels 6–20, 2–16 mm, spreading. Fruit: 1.2–3 mm wide, elliptic to ovate.
2n=14. Roadsides; < 350 m. Outer North Coast Ranges, Great Central Valley, c Central Coast, San Francisco Bay Area, Outer South Coast Ranges, South Coast; ± worldwide, warm temperate. Apr–Aug [Online Interchange]
Unabridged synonyms: [Apium leptophyllum (Pers.) Benth.]
Unabridged note: Expanded author citation: Cyclospermum leptophyllum (Pers.) Sprague ex Britton & P. Wilson

Previous taxon: Cyclospermum
Next taxon: Cymopterus


Name search

Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora,, accessed on Nov 29 2015
Citation for this treatment: [Author of taxon treatment] 2013. Cyclospermum, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on Nov 29 2015

Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.

Geographic subdivisions indicated for the distribution of Cyclospermum leptophyllum 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.