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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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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.
47 genera, 1350 species: especially tropics, subtropics medicinal (e.g., Panax, ginseng; Aralia, sarsaparilla), ornamental (e.g., Aralia, Fatsia, Hedera, Polyscias). [Plunkett et al. 2004 Plant Syst Evol 245:1–39] —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.
Key to Araliaceae
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.Key to Hydrocotyle
± 100 species: worldwide, especially southern hemisphere. (Greek: water cup, apparently from leaf shape) Hydrocotyle moschata G. Forst., Hydrocotyle ranunculoides, and Hydrocotyle sibthorpioides Lam. occasionally reported as lawn weeds.
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.
2n=48. Lake margins, ponds, slow-moving streams, marshes; < 1400 m. n Sierra Nevada Foothills (scattered), c High Sierra Nevada, Great Central Valley, Southwestern California (except Channel Islands, Western Transverse Ranges), s&w edge Mojave Desert; to eastern North America, South America. Mar–Jul [Online Interchange]
Previous taxon: Hydrocotyle ranunculoides
Next taxon: Hydrocotyle verticillata
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on May 24 2015
Citation for this treatment: [Author of taxon treatment] 2013. Hydrocotyle, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=28610, accessed on May 24 2015
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© 1995 Saint Mary's College of California
|Geographic subdivisions indicated for the distribution of Hydrocotyle umbellata|| 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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(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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