This has been reported from Ky. several times (e.g. Anderson 1924; Cr, M), but most accessible colls. have been reassigned to robust forms of muhlenbergii or aggregata. Var. gravida is widespread in midwestern regions and the northern Great Plains, but perhaps only adventive further east (see also W). The first verified record appears to be a 1938 coll. of F. McFarland from FAYE (MICH etc.) that has been det. by F.J. Hermann and P.W. Ball: "common in barnyard, Iris Place". There is also a recent coll. of typical gravida from CAMP (KNK): Naczi et al., CGE #45, 6 Jun 1996, powerline row, Highland Heights, just S of Tessener Rd, just E of Three Mile Rd. And a coll. has been reported from an "oak-hickory forest clearing" in TRIG (BEREA det. R. Naczi); or "intermittent creekbank" in restored prairie at Land-Between-the-Lakes (Thompson & Poindexter 2006). The few Ky. records of the more southwestern var. lunelliana (Mackenzie.) F.J. Herm. are probably erroneous (M), and this taxon is not generally segregated in recent treatments. C. gravida appears most similar to aggregata, but differs in its sheaths (FNA 23), with fronts pale and fragile at summits (versus yellow or brown, thick, firm), and with backs not white-spotted (versus often so). Also, leaves tend to be wider (up to 4-8 mm versus 3.5-5 mm), and perigynia are often larger (3.5-5.5 mm long versus 3.4-4.6 mm), with scales more or less equal to perigynia (versus shorter).