Robert W. Freckmann Herbarium


  Megalodonta beckii (Torr. ex Spreng.) Greene image
Photographer: Robert H. Read           

Derek Anderson

Derek Anderson

Linda W. Curtis

Linda W. Curtis

Linda W. Curtis

Paul Skawinski

Paul Skawinski

Robert W. Freckmann

Robert W. Freckmann
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
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
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)

More Information Natural Communities Herbarium Specimens
All Megalodonta list Google- Images or Text

Flora of North America (off site)
Synonyms 
Bidens beckii Torr. ex Spreng.

         
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