Echinocystis lobata (Michx.) Torr. & A. Gray
Coefficient of Conservatism: 2
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt A-Vine

Echinocystis lobata fruit & tendrils B. S. Walters fruit & tendrils

Swamps (deciduous), floodplains, river banks, streamsides, marshy ground, thickets, borders of forests, fencerows, roadsides, railroad embankments, gravel pits, disturbed ground such as alleys and refuse areas. Sometimes cultivated as an annual vine, and some occurrences in disturbed areas by habitation may be escapes.

The thoroughly distinctive fruit is greatly inflated and watery, opening irregularly at the apex to release the seeds. Squeezing the fruit just before it is mature will eject the seeds. The contents are otherwise so unsubstantial (mostly air) that one is not tempted to use the fruit like a true cucumber, which it loosely resembles.

The calyx is very inconspicuous in this species and Sicyos angulatus, and both have soft spines on the fruit. The corolla lobes tend to be more narrowly linear-lanceolate in Echinocystis than in Sicyos.


Alcona County
Allegan County
Alpena County
Arenac County
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Branch County
Calhoun County
Cass County
Charlevoix County
Cheboygan County
Chippewa County
Clinton County
Delta County
Dickinson County
Emmet County
Genesee County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Huron County
Ingham County
Iron County
Isabella County
Jackson County
Kalamazoo County
Kent County
Keweenaw County
Lake County
Lapeer County
Leelanau County
Lenawee County
Livingston County
Mackinac County
    Only on Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Marquette County
Mason County
Mecosta County
Menominee County
Midland County
Monroe County
Montcalm County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ontonagon County
Osceola County
Saginaw County
Shiawassee County
St. Clair County
St. Joseph County
Tuscola County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. June 29, 2022.