Table 2. Total taxa known by county, from best-collected to worst-collected county; tied counties are listed alphabetically.
| Rank Order | Arkansas County | Number of Taxa | 1. | Washington | 1,301 |
|---|---|---|
| 2. | Pulaski | 1,140 |
| 3. | Benton | 1,125 |
| 4. | Franklin | 1,072 |
| 5. | Faulkner | 1,044 |
| 6. | Ashley | 1,043 |
| 7. | Pope | 1,010 |
| 8. | Jefferson | 971 |
| 9. | Bradley | 964 |
| 10. | Stone | 955 |
| 11. | Garland | 945 |
| 12. | Newton | 938 |
| 13. | Drew | 925 |
| 14. | Polk | 902 |
| 15. | Logan | 892 |
| 16. | Marion | 853 |
| 17. | Independence | 831 |
| 18. | Baxter | 828 |
| 19. | Conway | 828 |
| 20. | Carroll | 824 |
| 21. | Hempstead | 818 |
| 22. | Cleburne | 797 |
| 23. | St. Francis | 774 |
| 24. | Saline | 767 |
| 25. | Montgomery | 762 |
| 26. | Union | 752 |
| 27. | Hot Spring | 750 |
| 28. | Clark | 738 |
| 29. | Madison | 736 |
| 30. | Craighead | 709 |
| 31. | Arkansas | 686 |
| 32. | Izard | 682 |
| 33. | Yell | 643 |
| 34. | Johnson | 613 |
| 35. | Howard | 612 |
| 36. | Nevada | 608 |
| 37. | Crawford | 607 |
| 38. | Fulton | 602 |
| 39. | Randolph | 583 |
| 40. | Lawrence | 577 |
| 41. | Sebastian | 564 |
| 42. | Clay | 563 |
| 43. | Sharp | 561 |
| 44. | Boone | 550 |
| 45. | Lincoln | 550 |
| 46. | Little River | 544 |
| 47. | Miller | 544 |
| 48. | Searcy | 542 |
| 49. | Ouachita | 519 |
| 50. | Crittenden | 516 |
| 51. | Lee | 510 |
| 52. | Sevier | 497 |
| 53. | Pike | 495 |
| 54. | Greene | 488 |
| 55. | Grant | 487 |
| 56. | Perry | 486 |
| 57. | Prairie | 484 |
| 58. | White | 484 |
| 59. | Poinsett | 482 |
| 60. | Cleveland | 478 |
| 61. | Scott | 478 |
| 62. | Calhoun | 461 |
| 63. | Lonoke | 459 |
| 64. | Dallas | 450 |
| 65. | Van Buren | 443 |
| 66. | Columbia | 421 |
| 67. | Desha | 420 |
| 68. | Cross | 417 |
| 69. | Phillips | 401 |
| 70. | Mississippi | 380 |
| 71. | Chicot | 370 |
| 72. | Monroe | 352 |
| 73. | Lafayette | 334 |
| 74. | Woodruff | 298 |
| 75. | Jackson | 275 |
| Total | 49,510 | |