| Classification | Apocynaceae: Carruthersia | 
| Classification 1 | Apocynaceae: Ichnocarpus | 
| Harvard University Herbaria Barcode(s) | 00055321 | 
| Type Status | Isosyntype | 
| Collector | A. D. E. Elmer | 
| Collector number | 10926 | 
| Country | Philippines | 
| State | Davao | 
| Geography | Asia: Southeast Asia (Region): Philippines: Davao | 
| Locality | Mindanao Island, Mount Apo | 
| Date Collected | 1909-07-** | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/974cf778-4556-4c75-9e84-ff331e906e8e | 
| Harvard University Herbaria Barcode | 00055321 | 
| Herbarium | GH | 
| Family | Apocynaceae | 
| Type Status | Isosyntype | 
| Isosyntype of | Carruthersia daronensis Elmer | 
| Verified by | H. G. Bedell | 
| Taxon Reference | (for  Carruthersia daronensis Elmer) Leafl. Philipp. Bot. 1912. 4: 1450-51. | 
| Family | Apocynaceae | 
| Determination | Ichnocarpus frutescens (Linnaeus) W. T. Aiton | 
| Determined by | D. Middleton | 
| Determination Remarks | [current name] | 
| Sex | not determined | 
| Phenology | Flower | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |