| Taxon | Collector | Location | Type Status | Barcode | |
|---|---|---|---|---|---|
| Usnea dasaea Stirt. | R. C. Harris 46852 07 Nov 2002 | United States of America. Arkansas. Pope Co. Ozark National Forest, Kings Bluff, S of AR 16, 6 mi E of AR 7 at Sand Gap. | 793379 | ||
| Usnea strigosa race acid deficient chemotype (Ach.) Eaton | WELC89759 | United States of America. Connecticut. Windham Co. East Killingly. | 364065 | ||
| Usnea endochrysea race norstictic acid chemotype Stirt. | D. M. Ladd 22092 with Mike Pederson, 03 Dec 1999 | United States of America. Arkansas. Jefferson Co. Pine Bluff Arsenal, along south side of Arkansas River, north of Pine Bluff. In vicinity of Phillips Creek unit, north of McCoy Road. | 655607 | ||
| Usnea endochrysea race norstictic acid chemotype Stirt. | R. C. Harris 21598A 25 Apr 1988 | United States of America. Arkansas. Stone Co. Ozark National Forest, Gunner Pool Recreation Area: along Little Sylamore Creek. | 655608 | ||
| Usnea endochrysea race norstictic acid chemotype Stirt. | L. Brako 2257 11 Aug 1979 | United States of America. Arkansas. Newton Co. Lost Valley, thirty miles southwest of Harrison. | 655609 | ||
| Usnea endochrysea race norstictic acid chemotype Stirt. | T. Chadwell 98 01 Mar 1996 | United States of America. Missouri. Carter Co. MOFEP site 4, in Cardareva State Forest, along north side of Current River, west of Paint Rock Creek, east of Huckleberry Hollow. | 655610 | ||
| Usnea endochrysea race norstictic acid chemotype Stirt. | E. G. Pinkley 99 20 Jul 1962 | United States of America. Missouri. Big Springs. | 655611 | ||
| Usnea endochrysea race norstictic acid chemotype Stirt. | R. C. Harris 40491 17 Apr 1997 | United States of America. Missouri. Oregon Co. Mark Twain National Forest, Falling Spring, ca. 2.4 mi E of MO 19 on Forest Service Road 3170/3164. | 655612 | ||
| Usnea endochrysea race norstictic acid chemotype Stirt. | R. C. Harris 21691 26 Apr 1988 | United States of America. Missouri. Oregon Co. Mark Twain National Forest, McCormack Lake Recreation Area. | 655613 | ||
| Usnea strigosa race psoromic acid chemotype (Ach.) Eaton | R. C. Harris 21588A 25 Apr 1988 | United States of America. Arkansas. Stone Co. Ozark National Forest, Gunner Pool Recreation Area: along Little Sylamore Creek. | 655617 | ||
| Usnea strigosa race psoromic acid chemotype (Ach.) Eaton | R. C. Harris 21598 25 Apr 1988 | United States of America. Arkansas. Stone Co. Ozark National Forest, Gunner Pool Recreation Area: along Little Sylamore Creek. | 655618 | ||
| Usnea strigosa race psoromic acid chemotype (Ach.) Eaton | A. Robinson 1 Nov 1949 | United States of America. Arkansas. Izard Co. Franklin. | 655620 | ||
| Usnea strigosa race psoromic acid chemotype (Ach.) Eaton | R. C. Harris 21691A 26 Apr 1988 | United States of America. Missouri. Oregon Co. Mark Twain National Forest, McCormack Lake Recreation Area. | 655621 | ||
| Usnea strigosa race psoromic acid chemotype (Ach.) Eaton | R. C. Harris 25936 25 Sep 1990 | United States of America. Missouri. Shannon Co. Ozark National Scenic Riverways, along St. Rd. 19, 1 mi N of Sinking Creek. | 655622 | ||
| Usnea strigosa race psoromic acid chemotype (Ach.) Eaton | O. Hawksley s.n. 14 Feb 1976 | United States of America. Missouri. Ozark Co. Garr Ridge area near Hammond. | 655623 | ||
| Usnea strigosa race psoromic acid chemotype (Ach.) Eaton | D. M. Ladd 19525 11 Mar 1996 | United States of America. Missouri. Carter Co. MOFEP site 8, at S end of Peck Ranch Conservation Area, ca. 5 mi N of hwy 60, E of Nordic Hollow, W of watershed of Midco Hollow, S of Log Spring Hollow. | 655624 | ||
| Usnea strigosa race acid deficient chemotype (Ach.) Eaton | O. Hawksley s.n. 14 Feb 1976 | United States of America. Missouri. Ozark Co. Garr Ridge area near Hammond. | 655627 | ||
| Usnea endochrysea race acid deficient chemotype Stirt. | R. C. Harris 47372 19 May 2003 | United States of America. Missouri. Douglas Co. Rippee Conservation Area, ca. 1 mi N of W end of Co. Rd. 328. | 787217 | ||
| Usnea subfloridana race squamatic acid chemotype Stirt. | J. Fowler s.n. September 1879 | Canada. New Brunswick. Grand Lake. | 1221419 | ||
| Usnea mutabilis Stirt. | C. H. Demetrio 19 Apr 1886 | United States of America. Missouri. Perry Co. Perryville. | 654398 |
