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Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
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Plant generally aquatic or in perennially wet areas, generally rooted in mud; rhizome creeping, slender, branched. Leaf: floating, emergent, or out of water, ± alike; blade 1-palmate or 0, << stipe; veins not or repeatedly forked, free or netted. Sporangia: in stalked, spheric or ± flat-ovoid, hard cases of 1 kind, attached near stipe base. Spores: large megaspores (female) and small microspores (male), in separate sporangia.
3 genera, ± 70 species: especially temperate. —Scientific Editors: Alan R. Smith, Bruce G. Baldwin.
Key to Marsileaceae
Aquatic, submerged or in mud, forming dense clumps. Sporangium case: subterranean, fused to stalk tip, spheric, hairy; teeth 0.
± 6 species: generally temperate. (Latin: little ball, from sporangium case)
Leaf: generally 2–6(11) cm. Sporangium case: ± 2–3 mm diam; stalk 1–3 mm.
2n=20. Vernal pools, mud flats, lake margins; < 2000 m. Inner North Coast Ranges, Cascade Range, Sierra Nevada Foothills, n High Sierra Nevada, Great Central Valley, San Francisco Bay Area, South Coast Ranges, South Coast, Western Transverse Ranges, Peninsular Ranges, Modoc Plateau; Oregon, Baja California; also scattered central and southeastern United States, South America. Poorly collected, often overlooked due to its small, grass-like appearance. [Online Interchange]
Previous taxon: Pilularia
Next taxon: Ophioglossaceae
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Jan 25 2015
Citation for this treatment: [Author of taxon treatment] 2013. Pilularia, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=38232, accessed on Jan 25 2015
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|Geographic subdivisions indicated for the distribution of Pilularia americana|| 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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