mouse-over letters and arrows for descriptions
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strand of the filamentous, submersed leaf |
axillary bud
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male sporocarp encases numerous sporangial sacs, mostly empty or containing up to 64 dysfunctional male spores |
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chain of male sporocarps (spore holding structures) |
new, unfolding leaves
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strand of the filamentous, submersed leaf |
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female sporocarp encases 25 microscopic sacs each containing one female spore |
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stalk of submersed leaf |
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chestnut colored, fur-like wettable hairs |
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transparent, velvet-like, water-repellant projections |
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stem, floats horizontally |
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Tertiary form develops under mat conditions when leaves are compressed upright under self-competition |
Secondary form found in favorable growth conditions, have long internodes and larger leaves, becoming keeled along the midrib
Primary form found in colonizing, low competition or low light conditions, is small with flat leaves
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Cross Section of a Floating Leaf (approx. 5 x life size) |
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Floating Leaf - individual plant (approx. 1.3 x life size) |
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older papillae broken and fragmented at the tips |
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”egg-beater like” papillae = transparent projections divided into four branches that rejoin at the tip |
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midrib |
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silky, chestnut colored hairs |
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