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Photographer: Robert H. Read
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Family Asteraceae
Megalodonta beckii (Torr. ex Spreng.) Greene
water beggar-ticks, water-marigold
Megalodonta: Greek for "large-toothed," referring to pappus awns
beckii: for Lewis Caleb Beck (1798-1853), its discoverer
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| Status: | Native |
| Plant: | erect, perennial, aquatic forb; from rhizomes |
| Flower: | head 1"-1 1/2" wide with 1/3"-1/2" long, yellow rays, disk 1/3" wide; inflorescence of one head at the end of a sturdy stalk |
| Fruit: | dry seed with 3-6 barbs |
| Leaf: | opposite; submersed leaves finely cut, thread-like with smooth edges; emerged leaves stalkless, lance-like with toothed edges |
| Habitat: | clear water to 12'; in soft sediment soil |
| (Glossary) |
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