| Hydrangea arborescens L. subsp. arborescens | | | | 4346677 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | | | | 04346678 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | | | | 4346681 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | | | | 4346683 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | | | | 4346685 |  |
| Hydrangea arborescens subsp. radiata (Walter) E.M.McClint. | | | | 04346694 |  |
| Hydrangea arborescens subsp. radiata (Walter) E.M.McClint. | | | | 04346695 |  |
| Hydrangea arborescens L. | | | | 04346645 |  |
| Hydrangea arborescens L. | | | | 4346648 |  |
| Hydrangea arborescens L. | | | | 4346655 |  |
| Hydrangea arborescens L. | | | | 4346662 |  |
| Hydrangea arborescens L. | | | | 4346664 |  |
| Hydrangea arborescens L. subsp. arborescens | | | | 4346669 |  |
| Hydrangea arborescens L. subsp. arborescens | | | | 4346671 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | | | | 4346679 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | | | | 4346680 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | | | | 4346682 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | | | | 4346684 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | E. J. Palmer 44200 | United States of America. Arkansas. Garland Co. near Hot Springs. | | 4269567 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | D. Demarée 22233 | United States of America. Arkansas. Newton Co. Jasper. | | 4269568 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | D. Demarée 19238 | United States of America. Arkansas. Phillips Co. Helena. bluffs on Crowley's Ridge. | | 4269572 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | D. Demarée 15240 | United States of America. Arkansas. Phillips Co. Helena. Crowleys Ridge. | | 4269574 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | D. Demarée 8221 | United States of America. Arkansas. Pulaski Co. Little Rock. Pulaski Heights. | | 4269575 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | D. Demarée 22157 | United States of America. Arkansas. Saint Francis Co. Crowleys Ridge. Madison Junction. | | 4269576 |  |
| Hydrangea arborescens subsp. deamii (H.St.John) E.M.McClint. | E. J. Palmer 44437 | United States of America. Arkansas. Crawford Co. near Chester. | | 4269577 |  |
| Hydrangea arborescens L. var. arborescens | G. M. Merrill 40 | United States of America. Arkansas. Pope Co. Nogo. | | 4269673 |  |
| Hydrangea arborescens L. var. arborescens | D. Demarée 20143 | United States of America. Arkansas. Perry Co. Bluffs of Fourche River above Nimrod Dam. P.O. Wildwood. | | 4269679 |  |
| Hydrangea arborescens L. var. arborescens | D. Demarée 19853 | United States of America. Arkansas. Pope Co. Dover. | | 4269680 |  |
| Hydrangea arborescens L. var. arborescens | D. Demarée 22404 | United States of America. Oklahoma. Delaware Co. Little Kansas. | | 4269681 |  |
| Hydrangea arborescens L. var. arborescens | D. Demarée 20650 | United States of America. Arkansas. Marion Co. Flippin. | | 4269688 |  |
| Hydrangea arborescens L. var. arborescens | D. Demarée 9489 | United States of America. Arkansas. Pike Co. Glenwood. bluffs of Caddo river. | | 4269689 |  |
| Hydrangea arborescens L. var. arborescens | D. Demarée 8492 | United States of America. Arkansas. Saline Co. Benton. Saline river bluffs. | | 4269692 |  |
| Hydrangea arborescens L. var. arborescens | D. Demarée 20106 | United States of America. Arkansas. Yell Co. Dardanelle. Mount Nebo State Park. North face of Mount Nebo. | | 4269693 |  |
| Hydrangea arborescens L. var. arborescens | R. Kral 58352 | United States of America. Arkansas. Pope Co. Longpool Rec. Area, Ozark N.F. | | 4269726 |  |
| Hydrangea arborescens L. var. arborescens | G. W. Stevens 2749 | United States of America. Oklahoma. Le Flore Co. north side of Rich Mt. Near Page. | | 4269727 |  |
| Hydrangea arborescens L. var. arborescens | E. L. Little Jr. 439 | United States of America. Oklahoma. Cherokee Co. East of Tahlequah. | | 4269753 |  |
| Hydrangea arborescens L. var. arborescens | D. Demarée 17719 | United States of America. Arkansas. Logan Co. P.O. Magazine Mountain. | | 4269759 |  |
| Hydrangea arborescens L. var. arborescens | D. Demarée 22565 | United States of America. Arkansas. Logan Co. P.O. Magazine Mountain. | | 4269760 |  |
| Hydrangea arborescens L. | J. R. Crutchfield 2257 | United States of America. Oklahoma. Delaware Co. Dripping Springs. 5 miles west of Arkansas state line, on US Hwy. #59. | | 4271550 |  |
| Hydrangea arborescens L. | M. Hopkins 2166 | United States of America. Oklahoma. McCurtain Co. Rich Mt., 2 mi. W. of State Line. | | 4271551 |  |