Panicum tuckermanii Fernald
Common Name: TUCKERMAN PANIC GRASS
Synonym: Panicum philadelphicum
Coefficient of Conservatism: 8
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt A-Grass

Included in P. philadelphicum in Michigan Flora.

Sandy to muddy lake, pond, and river shores.

This is perhaps the most easily recognized member of the P. capillare complex with the small (1.5–1.9 mm long, 0.6–0.8 mm wide) spikelets arrayed in racemose groups of 2–6 at the ends of the panicle branches giving a distinctive look. It is a species primarily of sandy or mucky shores of lakes and streams, including the Great Lakes, where the zigzag, partly decumbent culms are a distinctive, if uncommon, feature in late summer, especially during low water level years. It is rarely found in weedy habitats. This is a more northern species, nearing the southern limit of its range in southernmost Michigan. Considered by some authors to be the same as P. philadelphicum, and all records of P. philadelphicum from Michigan Flora belong here.

Locations

Allegan County
Berrien County
Delta County
Hillsdale County
Iron County
Kalamazoo County
Lenawee County
Monroe County
Muskegon County
Ontonagon County
Schoolcraft County
Washtenaw County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 14, 2017. http://michiganflora.net/species.aspx?id=2174.