Scirpus pedicellatus Fernald
Common Name: WOOL-GRASS
Synonym: Scirpus cyperinus
Coefficient of Conservatism: 5
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Sedge

Scirpus pedicellatus A. A. Reznicek

Included in S. cyperinus in Michigan Flora.

Meadows, around pools and swampy clearings in forests, openings in swamps.

Paler and also larger than S. atrocinctus, though similar in having the spikelets mostly pediceled, this is a poorly understood entity known from a few scattered localities, though perhaps overlooked. This species matures relatively early (inflorescences expanded by mid to late July) and even at maturity has greenish, grey-green, or pale brown spikelets, lacking the blackish tint of S. atrocinctus.

Two specimens from southernmost Michigan that will key here because of their pedicellate spikelets differ in having conspicuously reddish-brown scales and being late maturing (September); they are apparently the large southern variant of S. cyperinus formerly segregated as S. rubricosus Fern. 

 

Locations

Baraga County
Cass County
Charlevoix County
    Only on Beaver Island
Clinton County
Hillsdale County
Ingham County
Kalamazoo County
Leelanau County
Marquette County
Roscommon County
Washtenaw County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. September 16, 2019. https://www.michiganflora.net/species.aspx?id=1158.