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MARSILEACEAE MARSILEA FAMILY

Andy Murdock, Alan R. Smith & Thomas Lemieux

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

MARSILEA WATER-CLOVER

Leaf: blades floating and emergent; stipe of floating leaves weak.
Sporangium case: fused to stalk 0.8–1.7 mm, ± flat- ovoid; hairs long, dense, deciduous or not; distal tooth present or 0, tip of stalk often appearing tooth-like.
± 60 species (L.F. Marsigli, Italian botanist, 1656–1730) [Johnson 1986 Syst Bot Monogr 11:1–87] Marsilea mutica Mett. (native to Australia, New Caledonia), Marsilea drummondii A. Braun (native to Australia) cultivated in US in aquatic gardens, occasional escape in urban areas, may persist in CA; weed of concern in se US [Knepper et al. 2002 Amer Fern J 92:243–244].

Key to Marsilea

Previous taxon: Marsileaceae
Next taxon: Marsilea oligospora

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].

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Bioregions in which taxon occurs 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.
map of distribution 1

Chart based on elevation range in Manual and elevations and coordinates of CCH records.
Data provided by the participants of the Consortium of California Herbaria.
Note: About half of the CCH records include both elevation and coordinates.
Data provided by the participants of the Consortium of California Herbaria.
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