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| NAS - Nonindigenous Aquatic Species |
REPRODUCTION OF NONINDIGENOUS
MARSILEA, WATER-CLOVER
Marsilea reproduces sexually by spores or asexually
with rhizomes.
Rhizomes are horizontal stems that grow under and over the ground. Depending
on the species, rhizomes may be thick and succulent or wiry and tough. Plants
may also overwinter as rhizomes underground.
Land plants produce small, stalked bean- to disk-shaped
structures called sporocarps. Sporocarps turn brown and hard when mature. Under
wet conditions the male and female spores, contained in close proximity within
the sporocarp, may germinate and cross fertilize to form new plants.
The presence of sporocarps is essential for identification of Marsilea
species.
29 September 2001, C.C. Jacono
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