| Abronia fragrans Nutt. ex Hook. | United States | 2018-05-17 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | |  available for loan |
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| Acalypha hispida | United States | 2017-07-07 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Acantholimon acerosum (Willd.) Boiss. | United States | 2017-06-29 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Acantholimon armenum Boiss. & A. Huet | United States | 2017-06-28 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Acantholimon litvinovii Lincz. | United States | 2017-06-28 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Acantholimon quinquelobum curviflorum (Bunge)Dogan | United States | 2017-06-28 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Acantholimon venustum (Fenzl. ex Boiss.) Boiss. | United States | 2017-06-28 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Acanthus hirsutus syriacus (Boiss.)Brummitt | United States | 2018-06-11 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Acer glabrum Torr. | United States | 2017-06-28 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Acer glabrum Torr. | United States | 2017-07-10 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Acer glabrum Torr. | United States | 2017-07-11 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Acer glabrum glabrum | United States | 2017-06-06 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Acer griseum (Franch.) Pax | United States | 2018-06-06 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Achillea millefolium L. | United States | 2017-07-25 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Achillea millefolium L. | United States | 2017-07-27 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Achillea millefolium L. | United States | 2018-07-04 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Achillea millefolium L. | United States | 2017-06-27 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Achillea millefolium L. | United States | 2017-06-28 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Achillea millefolium L. | United States | 2017-06-29 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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| Achillea millefolium L. | United States | 2018-08-08 | | | | | | | | |
| Repository | Material Type | Preparation Type | Relation | Available for Loan | | DBG, Denver | tissue | leaf | | available for loan |
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