| Classification | Ranunculaceae: Clematis |
| Harvard University Herbaria Barcode(s) | 00038181 |
| Type Status | Possible Holotype |
| Collector | S. W. Williams & J. Morrow |
| Country | Japan |
| State | Shizuoka |
| Geography | Asia: East Asia (Region): Japan: Shizuoka: Shimoda |
| Locality | Simoda |
| Date Collected | [[protologue: "April 20"]] |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/bf4d82e4-e536-4856-8eee-2c8671bb787c |
| Harvard University Herbaria Barcode | 00038181 |
| Herbarium | GH |
| Family | Ranunculaceae |
| Determination | Clematis williamsii A. Gray |
| Determined by | [A. Gray (scripsit) W. T. Kittredge, 2015] |
| Determination Remarks | [is label name] |
| Annotation Text | n. sp. |
| Family | Ranunculaceae |
| Determination | Clematis williamsii A. Gray |
| Determined by | Koyama, Tetsuo Michael |
| Date Determined | 2004-04-20 |
| Determination Remarks | [is Current name] |
| Annotation Text | Holotype |
| Family | Ranunculaceae |
| Type Status | Possible Holotype |
| Possible Holotype of | Clematis williamsii A. Gray |
| Verified by | Kittredge, Walter Tobey |
| Date Determined | 2015 |
| Determination Remarks | [is filed under name] |
| Taxon Reference | (for Clematis williamsii A. Gray) Narr. Exped. China Japan [Perry] 1857. 2: 306. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
