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Oenanthe sarmentosa

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: OenantheView Description 

Habit: Perennial herb from clustered, fibrous-tuberous roots or rhizomes, glabrous. Stem: generally decumbent or ascending, proximal nodes generally rooting. Leaf: blade oblong to triangular-ovate, generally 1--3-pinnate, leaflets wide or narrow, generally serrate to pinnately lobed. Inflorescence: umbels compound; bracts generally 0 or inconspicuous; bractlets many; rays, pedicels many, spreading or spreading-ascending. Flower: outer bisexual or staminate, occasionally bilateral; outer calyx lobes acute, generally prominent, persistent and enlarging in fruit or not; petals wide, white, tips narrowed; styles persistent. Fruit: oblong-ovate to round, +- cylindric [+- compressed front-to-back]; ribs low, obtuse, corky; oil tubes generally 1 per rib-interval. Seed: face flat.
Species In Genus: +- 30 species: North America, Eurasia, Africa. Etymology: (Greek: wine flower) Note: Oenanthe pimpinelloides record based on misidentified specimen.

Oenanthe sarmentosa C. Presl ex DC.
Habit: Plant 5--15 dm. Leaf: petiole 1--3.5 dm; blade 1--3 dm, 6--25 cm wide, generally 2-pinnate, leaflets 1--6 cm, +- ovate, serrate to lobed; cauline leaves like basal. Inflorescence: peduncle 5--13 cm; bractlets many, 4--5 mm, lanceolate, acute; rays 10--20, 1.5--3 cm; pedicels 2--6 mm. Flower: calyx lobes 0.5--1 mm, lanceolate; styles 2--3 mm. Fruit: 2.5--3.5 mm, oblong; ribs +- wide. Chromosomes: 2n=44.
Ecology: Streams, marshes, ponds, generally aquatic; Elevation: < 1800 m. Bioregional Distribution: NCo, NCoRI, CaRF, SNF (uncommon), CCo, SnFrB, SCo, SnBr, PR, DMoj; Distribution Outside California: to western Canada. Flowering Time: Jun--Oct
eFlora Treatment Author: Lincoln Constance & Margriet Wetherwax
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botanical illustration including Oenanthe sarmentosa


Citation for this treatment: Lincoln Constance & Margriet Wetherwax 2016. Oenanthe sarmentosa, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 29, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 29, 2016.

Oenanthe sarmentosa
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© 2008 Keir Morse
Oenanthe sarmentosa
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© 2008 Keir Morse
Oenanthe sarmentosa
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© 2015 Barry Breckling
Oenanthe sarmentosa
click for enlargement
© 2008 Keir Morse
Oenanthe sarmentosa
click for enlargement
© 2008 Keir Morse
Oenanthe sarmentosa
click for enlargement
© 2008 Keir Morse

More photos of Oenanthe sarmentosa in CalPhotos

Geographic subdivisions for Oenanthe sarmentosa:
NCo, NCoRI, CaRF, SNF (uncommon), CCo, SnFrB, SCo, SnBr, PR, DMoj;
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).

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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.