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Vascular Plants of California
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Hydrocotyle ranunculoides


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.
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 ranunculoides L.f.
NATIVE
Habit: Plant fleshy, floating or creeping. Leaf: petiole 5--35 cm, stout; blade generally 2--5 cm wide, round-reniform, generally wider than long, deeply 3--7-lobed, entire to minutely crenate. Inflorescence: peduncles 1--5 cm; umbels dense, 5--10-flowered; pedicels short. Fruit: 1--3 mm, elliptic to round; ribs obscure. Chromosomes: 2n=48.
Ecology: Lake margins, ponds, slow-moving streams; Elevation: < 1500 m. Bioregional Distribution: NCo, NCoRO, CaRF, c GV, CW (exc SCoRI), SW (exc ChI, WTR), w edge DMoj; Distribution Outside California: to eastern North America, South America. Flowering Time: Mar--Aug
Jepson eFlora Author: Robert E. Preston & Lincoln Constance
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Robert E. Preston & Lincoln Constance 2012, Hydrocotyle ranunculoides, in Jepson Flora Project (eds.) Jepson eFlora, https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=28607, accessed on April 16, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora, https://ucjeps.berkeley.edu/eflora/, accessed on April 16, 2024.

Hydrocotyle ranunculoides
click for enlargement
©2018 Neal Kramer
Hydrocotyle ranunculoides
click for enlargement
©2018 Neal Kramer
Hydrocotyle ranunculoides
click for enlargement
©2018 Neal Kramer
Hydrocotyle ranunculoides
click for enlargement
©2018 Neal Kramer
Hydrocotyle ranunculoides
click for enlargement
©2018 Neal Kramer

More photos of Hydrocotyle ranunculoides
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Geographic subdivisions for Hydrocotyle ranunculoides:
NCo, NCoRO, CaRF, c GV, CW (exc SCoRI), SW (exc ChI, WTR), w edge DMoj
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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).





 

Data provided by the participants of the  Consortium of California Herbaria.
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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).