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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.
2 genera, 10 species: temperate North America. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.
Key to Limnanthaceae
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.Key to Limnanthes
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).
Erect or ascending; herbage glabrous. Stem: 3–35(100) cm. Leaf: 3–7(25 cm); leaflets 5–13, linear to lanceolate to widely ovate, entire or occasionally toothed or lobed. Flower: cup-, bell-, or funnel-shaped; sepals 4–17 mm, glabrous or margins hairy; petals 10–18 mm, white to yellow or yellow with white tips, veins purple to pink or cream, occasionally drying ± green-yellow, reflexed in fruit; filaments 3.5–8 mm, anthers 0.8–2 mm, cream to yellow, dark pink, orange-red, or ± black; style 3–8 mm. Fruit: mericarps smooth, ridged, or at least tip tubercled. [Online Interchange]
Leaf: leaflets linear to ovate, entire to deeply lobed. Flower: cup- or bell-shaped; petals white, drying pale yellow at base or not, veins white or ± purple; anthers cream to yellow. Fruit: mericarps smooth or ± tubercled above.
Wet meadows, edges of vernal pools, ephemeral streams; < 1000 m. North Coast Ranges, Sacramento Valley (Butte Co.), San Francisco Bay Area, South Coast Ranges. Mar–May [Online Interchange]
Previous taxon: Limnanthes douglasii subsp. douglasii
Next taxon: Limnanthes douglasii subsp. rosea
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Aug 2 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=51260, accessed on Aug 2 2014
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