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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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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
Perennial herb, glabrous, generally glaucous; roots tuberous, single or clustered, or clustered-fibrous. Stem: erect, branched. Leaf: blade lanceolate to triangular-ovate, generally 1–2-ternate-pinnate or 1–2-pinnately or ternate-pinnately dissected, leaflets or segments generally linear to lance-linear. Inflorescence: umbels compound; bracts 0–many, conspicuous and reflexed or not; bractlets several to many, narrow, ± scarious; rays, pedicels few to many, generally spreading-ascending; 2° umbels generally convex distally. Flower: calyx lobes evident; petals generally obovate, white, tips narrowed. Fruit: linear-oblong, ± compressed side-to-side or not at all, glabrous; ribs ± equal, thread-like to prominent, not winged; oil tubes 1–several per rib-interval; fruit axis divided to base. Seed: face flat to grooved.Key to Perideridia
± 12 species: generally western America. (Greek: around the neck, from involucre) [Chuang & Constance 1969 Univ Calif Publ Bot 55:1–74] Roots, basal leaves needed for identification.
Plant 1–9 dm, green to glaucous; roots tuberous, 2–6-clustered, 0.5–3 cm, fusiform to spheric. Leaf: basal petiole 2–10 cm; basal blade 3–30 cm, ± ovate, 1–2-ternate-pinnate, leaflets 0.5–6 cm, linear or oblong, generally entire; cauline leaves 1–2-pinnate. Inflorescence: peduncle 3–20 cm; bracts (0–2)6–10, bristle-like; bractlets 4–8, 2–7 mm, lance-linear; rays 10–29, 1–4.5 cm, ± equal in fruit, spreading-ascending; pedicels 2–6 mm; 2° umbels 10–29-flowered. Flower: petals 1-veined; styles 1–2 mm. Fruit: 3–6 mm, oblong; ribs thread-like; oil tube 1 per rib-interval.
2n=16,18,20,26. Open flats or slopes, pine/oak woodland; 60–2100 m. Klamath Ranges, North Coast Ranges, High Cascade Range, San Francisco Bay Area, Inner South Coast Ranges, Modoc Plateau; Oregon. Highly variable. Jul–Aug [Online Interchange]
Previous taxon: Perideridia leptocarpa
Next taxon: Perideridia parishii
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 9 2013
Citation for this treatment: [Author of taxon treatment] 2012. Perideridia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=37256, accessed on Dec 9 2013
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© 2011 Neal Kramer
|Bioregions in which Perideridia oregana occurs||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.|
Chart based on elevation range in eFlora and elevations and coordinates of CCH records.
Data provided by the participants of the Consortium of California Herbaria.
Note: About half of the CCH records include both elevation and coordinates.
| Data provided by the participants of the Consortium of California Herbaria.
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