Jepson eFlora: Taxon page
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Hydrocotyle umbellata

Higher Taxonomy
Family: AraliaceaeView DescriptionDichotomous Key

Common Name: GINSENG FAMILY
Habit: Perennial herb, shrub, tree, woody vine; juvenile, flower plants generally unlike. Stem: generally branched. Leaf: simple or compound, generally alternate; stipules +- fused to +- sheathing, petiole base or 0. Inflorescence: umbels 1 to panicled; bracts deciduous or not. Flower: generally bisexual, generally radial, generally < 5 mm; sepals generally 5, fused at base, inconspicuous, persistent; petals generally 5, free, +- white to green, deciduous; stamens generally 5, generally alternate petals; ovary inferior, chambers 1--15, 1-ovuled, styles as many as chambers, free or fused, persistent. Fruit: berry or drupe, occasionally flat, dry.
Genera In Family: 47 genera, 1350 species: especially tropics, subtropics medicinal (e.g., Panax, ginseng; Aralia, sarsaparilla), ornamental (e.g., Aralia, Fatsia, Hedera, Polyscias).
eFlora Treatment Author: Robert E. Preston & Elizabeth McClintock, except as noted
Scientific Editor: Douglas H. Goldman, Bruce G. Baldwin.
Genus: HydrocotyleView DescriptionDichotomous Key

Common Name: MARSH PENNYWORT
Habit: Perennial herb, creeping or sprawling, glabrous [hairy]; rhizomes or stem rooting at nodes. Leaf: simple; petiole scarious-stipuled, not sheathing; blade +- round, peltate or not, entire to deeply lobed. Inflorescence: simple umbels, occasionally spikes, open or dense; bracts 0 or inconspicuous; pedicels 0--many, spreading. Flower: calyx lobes 0 or minute; petals obtuse or acute, +- green to +- yellow-white or +- purple, tip not incurved. Fruit: elliptic to round, very compressed side-to-side; ribs +- equal, thread-like, distinct or not; oil tubes 0, fruit wall with individual oil cells; fruit central axis not obvious. Seed: face flat to convex.
Species In Genus: +- 100 species: worldwide, especially southern hemisphere. Etymology: (Greek: water cup, apparently from leaf shape) Note: Hydrocotyle moschata G. Forst., Hydrocotyle ranunculoides, and Hydrocotyle sibthorpioides Lam. occasionally reported as lawn weeds.
eFlora Treatment Author: Robert E. Preston & Lincoln Constance

Hydrocotyle umbellata L.
NATIVE
Habit: Floating or creeping. Leaf: petiole 0.5--4.5 cm; blade generally 1--5 cm wide, round, peltate, shallowly, crenately, +- equally 8--20-lobed, or margin crenate. Inflorescence: peduncles 1.5--35 cm; open umbel, 10--60-flowered; pedicels 2--25 mm, unequal, spreading to reflexed. Fruit: 1--2 mm, elliptic; ribs obtuse. Chromosomes: 2n=48.
Ecology: Lake margins, ponds, slow-moving streams, marshes; Elevation: < 1400 m. Bioregional Distribution: n SNF (scattered), c SNH, GV, SW (exc ChI, WTR), s&w edge DMoj; Distribution Outside California: to eastern North America, South America. Flowering Time: Mar--Jul
eFlora Treatment Author: Robert E. Preston & Lincoln Constance
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Previous taxon: Hydrocotyle ranunculoides
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Citation for this treatment: Robert E. Preston & Lincoln Constance 2016. Hydrocotyle umbellata, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=28610, accessed on February 12, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 12, 2016.


Geographic subdivisions for Hydrocotyle umbellata:
n SNF (scattered), c SNH, GV, SW (exc ChI, WTR), s&w edge 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.
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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.