Neckera  Hedw. [NECKERACEAE]

Neckera besseri (Lob.) Jur.

SPFD PLATEAU: Dade. SALEM PLATEAU: Baxter-Ak, Douglas.  BOSTON MTS: Johnson, Newton, Stone.

Neckera complanata (Hedw.) Hüb.

       BOSTON MTS: Cleburne.

Onchophorus (Bridel) Bridel [DICRANACEAE]

Onchophorus virens (Hedw.) Brid.

      ARKANSAS, MISSOURI, OKLAHOMA (Ireland 2007)

Onchophorus wahlenbrgii Bridel

      ARKANSAS, MISSOURI, OKLAHOMA (Ireland 2007)

Orthotrichum Hedw. [ORTHOTRICHACEAE]

Orthotrichum anomalum Hedw.

       BORDER COUNTIES: Lincoln (Gier, 1955).

Orthotrichum cupulatum Brid.

       OUACHITA MTS: McCurtain-OK (Sharp, 1930).

Orthotrichum diaphanum Brid.

       SPFD PLATEAU: Dade, Greene.  SALEM PLATEAU: Phelps.  BOSTON MTS: Conway, Newton.

Orthotrichum elegans Schwaegr.  ex Hook.

      BORDER COUNTIES: Lincoln (Darigo, MO)

Orthotrichum ohioense Sull. & Lesq. in Aust.

PRAIRIE: Pettis.  SPFD PLATEAU: Barry.  SALEM PLATEAU: Baxter-AK, Carter, Dent, Howell, Marion-AK, Oregon, Osage, Shannon, Taney.  BOSTON MTS: Conway, Crawford, Franklin, Johnson, Madison, Newton (Buck, NY), Pope, Stone.  OUACHITA MTS: Clark, Montgomery, Pike (Majestyk, 1994), Saline.  MISSISSIPPI LOWLANDS: Dunklin (Darigo, 1999), Mississippi-AK (Darigo, 1999), Pemiscot (Darigo, 1999).

Orthotrichum pumilum Sw.

PRAIRIE: Bates, Lafayette, Pettis (Gier, 1955).  BORDER COUNTIES: Boone (Gier, 1955), Clay (Gier, 1955) St. Charles (Darigo, 1999).  SPFD PLATEAU: Greene, Jasper (Gier, 1955), Lawrence.SALEM PLATEAU: Cape Girardeau (Gier, 1955), Carter (Gier, 1955), Cole, Franklin, Jefferson (Gier, 1955), St. Louis (Gier, 1955), Scott (Gier, 1955), Shannon (Gier, 1955), Stoddard (Gier, 1955).  ST. FRANCOIS MTS: Iron (Gier, 1955).  OUACHITA MTS:  Latimer-OK, McCurtain-OK

Orthotrichum pusillum Mitt.

PRAIRIE: Bates, Barton, Cooper, Henry, Jackson, Johnson, Pettis, Vernon.  BORDER COUNTIES: Boone    (Gier, 1955), Callaway (Darigo, 1995b), Lincoln (Darigo, 1996), St. Charles (Darigo, 1996), Warren (Daraigo, 1998). SPFD PLATEAU: Barry, Cedar, Cherokee-OK, Dade, Greene, Hickory, Jasper, Lawrence, McDonald, Newton, Polk, St. Clair, Webster.  SALEM PLATEAU: Baxter-AK, Boone-AK, Butler (Darigo, 1996), Camden, Cape Girardeau, Carroll-AK, Carter, Cole, Crawford, Dent, Douglas, Franklin, Gasconade, Howell, Jefferson (Gier, 1955), Laclede, Maries, Marion-AK (Allen, MO), Miller, Moniteau, Osage, Ozark, Perry (Darigo, 1997), Phelps, Pulaski, Ripley, St. Francois, Ste. Genevieve, St. Louis (Darigo, 1996), Scott, Shannon, Stoddard, Stone, Taney (Gier, 1955),  Washington, Wright.  ST. FRANCOIS MTS: Iron, Madison, Reynolds, Wayne.  OZARK HILLS: Hardin (Hatcher, 1952), Johnson, Williamson.  BOSTON MTS: Cherokee-OK, Cleburne, Crawford, Faulkner, Franklin (Majestyk, 2001), Johnson, Newton, Pope, Searcy, Sequoyah-OK, Washington.  ARKANSAS VALLEY: Conway (Majestyk, 2000), LeFlore-OK, Sebastian.  OUACHITA MTS: Garland, Leflore-OK, McCurtain-OK (Sharp, 1930), Perry, Pushmataha-OK, Yell.

Orthotrichum speciosum Nees in Strum. var. elegans (Schwaegr. ex Hook. & Grev.) Warnst. = Orthotrichum elegans fide Vitt & Darigo, 1997.

Orthotrichum stellatum Brid.

SPFD PLATEAU: Barry, Christian, Dallas, Polk, Webster.  BORDER COUNTIES: Lincoln (Darigo, 1996), St. Charles (Darigo, 1999), SALEM PLATEAU: Benton, Dent, Douglas, Laclede, Maries, Ozark, Phelps, Pulaski, Shannon, Stone, Taney, Washington.  ST. FRANCOIS MTS: Iron. BOSTON MTS: Franklin, Newton, Washington (Majestyk, 2000), OUACHITA MTS: LeFlore-OK, Montgomery

Orthotrichum strangulatum P. Beauv. f. lescuri (Aust.) Vitt

        ST. FRANCOIS MTS: Wayne.

Orthotrichum strangulatum P. Beauv. f. strangulatum

PRAIRIE: Bates, Jackson, Vernon.  BORDER COUNTIES: Boone (Gier, 1955), Lincoln (Darigo, 1996), Montgomery, St. Charles (Daraigo, 1998), Warren (Darigo, 1995a). SPFD PLATEAU: Adair-OK, Barry, Benton-Ak (Majestyk, 2001), Christian, Dallas, Greene, Jasper, Lawrence, McDonald, Ottawa (Darigo, 1999), Polk, St. Clair, Webster.  SALEM PLATEAU: Baxter, Boone-AK, Camden, Carter, Dent, Gasconade, Jefferson, Laclede, Maries, Miller, Oregon, Ozark, Perry, Phelps, St. Louis, Shannon, Stone, Taney, Texas, Van Buren-AK, Washington, Wright.  ST. FRANCOIS MTS: Wayne.  OZARK HILLS: Gallatin.  BOSTON MTS: Newton, Searcy, Stone, Washington.  OUACHITA MTN: Clark (Majestyk, 1994). MISSISSIPPI LOWLANDS: St. Francis.

Oxystegus (Limpr.) Hilp. [POTTIACEAE]

Oxystegus tenuirostris (Hook. & Tayl.) A. J. E. Sm. = Trichostomum tenuirostre var. tenuirostre fide Zander, 2004.