Myriophyllum heterophyllum Michx. - Water Millfoil, Coontail

Myriophyllum heterophyllum plant

Family - Haloragidaceae

Stems - No info yet.

Leaves - No info yet.

Myriophyllum heterophyllum leavesLeaves of the flowering stems.

Inflorescence - No info yet.

Flowers - No info yet.

Myriophyllum heterophyllum flowersFlowers close-up.

Flowering - May - September.

Habitat - Spring branches, spring fed ponds, sloughs, ox-bows, ditches, streams.

Origin - Native to U.S.

Other info. - This common and attractive species is found mainly in the southern 1/2 of Missouri but a disjunct population has been found in a pond in Grundy County which is fairly far north in the state.
The plant can be identified easily by its habitat (it is most frequent in cold, clear waters), its whorled vegetative leaves, and the small fimbriate leaves of its flowering stems. The species epithet heterophyllum means "different leaves."

Photographs taken near Pultite Spring, Shannon County, MO., 7-11-04.


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