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Key to families | Table of families and genera

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RANUNCULACEAE BUTTERCUP FAMILY

Margriet Wetherwax & Dieter H. Wilken, family description, key to genera

Annual, perennial herb, woody vine [shrub], occasionally aquatic. Leaf: generally basal and cauline, alternate or opposite, simple or compound; petioles at base generally flat, occasionally sheathing or stipule-like. Inflorescence: cyme, raceme, panicle, or flowers 1. Flower: generally bisexual, generally radial; sepals 3–6(20), free, early-deciduous or withering in fruit, generally green; petals 0–many, generally free; stamens generally 5–many, staminodes generally 0; pistils 1–many, ovary superior, chamber 1, style 0–1, generally ± persistent as beak, ovules 1–many. Fruit: achene, follicle, berry, ± utricle in Trautvetteria, in aggregate or not, 1–many-seeded.
± 60 genera, 1700 species: worldwide, especially northern temperate, tropical mountains; many ornamental (Adonis, Aquilegia, Clematis, Consolida, Delphinium, Helleborus, Nigella). some highly TOXIC (Aconitum, Actaea, Delphinium, Ranunculus). [Whittemore & Parfitt 1997 FNANM 3:85–271] Taxa of Isopyrum in TJM (1993) moved to Enemion; Kumlienia moved to Ranunculus. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.

Key to Ranunculaceae

CALTHA MARSH MARIGOLD

Bruce A. Ford

Perennial herb from short caudex [long, slender stolons], generally fleshy, glabrous. Stem: 1–few. Leaf: simple, oblong-ovate to spheric-reniform or cordate, crenate to dentate [entire]; basal petioles > blades. Inflorescence: cyme or flowers 1, terminal or axillary, bracts leaf-like. Flower: sepals 5–12, petal-like, white to yellow; petals 0; pistils 5–many, ovules. Fruit: follicle, sessile to short-stalked, generally beaked. Seed: brown, wrinkled.
10 species: worldwide. (Greek: ancient name, from bowl-shaped flower)

Key to Caltha

C. palustris L.
NATURALIZED
Plant 10–70(80) cm. Leaf: petiole 3–50 cm, > blade; blade 2–20 cm wide, entire, crenate, or dentate. Inflorescence: peduncle generally > leaves, 1–7-flowered. Flower: sepals 4–9, elliptic to obovate. Fruit: 6–16, 12–20 mm; beak straight or ± curved.
Roadside bogs, edges of marshes, swamps, lakes, streams; 900–3300 m. North Coast, North Coast Ranges, Central Coast; Oregon to Alaska, Alberta to Ontario, North Carolina. Apr–Jul [Online Interchange]

Previous taxon: Caltha leptosepala
Next taxon: Clematis

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Sep 30 2014
Citation for this treatment: [Author of taxon treatment] 2013. Caltha, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=16802, accessed on Sep 30 2014

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Geographic subdivisions indicated for the distribution of Caltha palustris 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.