Hydrophyllum appendiculatum Michx.
Common Name: GREAT WATERLEAF
Coefficient of Conservatism: 7
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt B-Forb

Hydrophyllum appendiculatum flowers A. A. Reznicek flowers

Rich deciduous forests (beech, maple, etc.), especially in moist areas and ravines, blooming in late spring.

The distinct reflexed appendages between the calyx lobes in this species, along with the pubescence, which is consistently spreading and of two very different lengths, make recognition relatively easy. This species is a biennial, with slender taproot, and lacks the stout, ± knotty, elongate rhizomes of the other two, perennial species. The flowers are some shade of blue, purple, or even pink, rarely white.

The only Upper Peninsula record is one collected in 1899, in a bound herbarium of plants collected at Escanaba, Delta Co., by P. Herminegild (MICH), but there seems to be no reason for doubting it.  

Locations

Allegan County
Barry County
Benzie County
Berrien County
Branch County
Calhoun County
Cass County
Delta County
Eaton County
Genesee County
Grand Traverse County
Gratiot County
Hillsdale County
Ingham County
Ionia County
Jackson County
Kalamazoo County
Kent County
Lake County
Leelanau County
    Including Manitou Islands
Lenawee County
Midland County
Monroe County
Oakland County
Van Buren County
Washtenaw County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 12, 2017. http://www.michiganflora.net/species.aspx?id=573.