Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
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Alan R. Smith and Thomas Lemieux

Plant generally aquatic, generally rooted in, often stranded on mud; rhizome creeping, slender, branched
Leaves floating, emergent, or out of water, ± alike; blade 1-palmate or 0, << petiole; veins not or repeatedly forked, free or netted
Sporangia in stalked, spheric or ± flat-ovoid, hard cases of 1 kind, near petiole base
Spores large (female) and small (male), in separate sporangia
Genera in family: 3 genera, ± 70 species: especially temp.


Leaf like that of clover or wood sorrel; blade 1-palmate, leaflets 4, wedge-shaped, hairy
Sporangium case fused to stalk 0.8–1.7 mm, ± flat-ovoid, hairs long, dense, deciduous or not, teeth 1–2, near base
Species in genus: > 60 species: especially temp
Etymology: (L.F. Marsigli, Italian botanist, 1656–1730)
Reference: [Johnson 1986 Syst Bot Monogr 11:1–87]

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bioregional map for MARSILEA being generated
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