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LIMNANTHACEAE MEADOWFOAM FAMILY

Robert Ornduff & Nancy R. Morin

Annual, glabrous to hairy. Stem: generally branched. Leaf: alternate, deeply pinnately lobed to 1–2-compound; stipules 0. Inflorescence: flowers solitary in axils, pedicelled. Flower: generally bisexual, radial; sepals 3–5, free; petals 3–5, free, white to pink or yellow; stamens 3, 8, or 10, free, generally in 2 whorls; nectary glands at bases of outer stamens; pistil 1, ovary deeply 2–5-lobed, style 1, from base of ovary. Fruit: mericarps 1–5, 1-seeded, ovoid to spheric, generally tubercled.
2n=10.
2 genera, 10 species: temperate North America. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.

Key to Limnanthaceae

LIMNANTHES MEADOWFOAM
Annual, decumbent to erect. Leaf: generally 1-odd-pinnately lobed or compound; lobes or leaflets entire to deeply lobed. Flower: sepals (4)5; petals (4)5, generally > sepals, tips toothed or jagged; stamens 8 or 10; ovary lobes 4–5. Fruit: mericarps 1–5, 2.5–4 mm, obovoid to nearly spheric, smooth, ridged, or tubercled.
7 species: ± coastal western North America. (Greek: marsh flower, from habitat) [Mason 1952 Univ Calif Publ Bot 25:455–512] Plants reported as Limnanthes macounii from Central Coast are variants of Limnanthes douglasii (Meyers et al. 2010 Syst Bot 35:552–558).

Key to Limnanthes

L. floccosa Howell
NATIVE
Erect to ascending or decumbent; herbage glabrous to sparsely or densely hairy. Stem: 3–25 cm. Leaf: 1–8 cm; leaflets 5–11, linear to ovate-elliptic, entire, toothed, or lobed. Flower: urn-, cup-, or bell-shaped; sepals 4–10 mm; petals 4.5–10 mm, < to ± > sepals, curving over fruit, white; filaments 2–7 mm, anthers 0.4–1.5 mm; style 1.5–4 mm. Fruit: mericarps tubercles low. In California mericarps fall together with calyx. [Online Interchange]

L. floccosa subsp. floccosa WOOLLY MEADOWFOAM
NATIVE
Herbage densely hairy. Flower: bell- to urn-shaped; sepals 4–9 mm; petals 4.5–8.5 mm, hairs at base 0; anthers 0.4– ± 1 mm, generally dehiscing inward; style 1.5–3 mm. Fruit: mericarps, 1–3, tubercles awl-shaped.
Vernal pool edges; < 600 m. Klamath Ranges, Inner North Coast Ranges, Cascade Range; Oregon. Mar–May [Online Interchange] {CNPS list}

Previous taxon: Limnanthes floccosa subsp. californica
Next taxon: Limnanthes montana

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Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Dec 22 2014
Citation for this treatment: [Author of taxon treatment] 2013. Limnanthes, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=51265, accessed on Dec 22 2014

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Geographic subdivisions indicated for the distribution of Limnanthes floccosa subsp. floccosa 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.