| Classification | Onagraceae: Oenothera |
| Classification 1 | Onagraceae: Calylophus |
| Harvard University Herbaria Barcode(s) | 00054220 |
| Type Status | Isotype |
| Collector | T. Drummond |
| Collector number | 79 |
| Country | United States of America |
| State | Texas |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Texas: Austin County |
| Locality | Rio Brassos [Brazos River] |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/11617c9e-13f6-4375-bb4f-ecf6294cb075 |
| Harvard University Herbaria Barcode | 00054220 |
| Herbarium | GH |
| Previous ownership | 1870. From Herb. J. Gay, purchased by Dr. Hooker |
| Family | Onagraceae |
| Determination | Oenothera serrulata var. drummondii Torrey & A. Gray |
| Determined by | Munz, Philip Alexander |
| Date Determined | 1928-02-** |
| Annotation Text | Revision Acc. To International Rules |
| Family | Onagraceae |
| Determination | Calylophus serrulatus (Nuttall) P. H. Raven |
| Determined by | Towner, Howard Frost |
| Determination Remarks | [is Current name] |
| Annotation Text | 1969-1970 |
| Family | Onagraceae |
| Type Status | Isotype |
| Isotype of | Calylophus drummondianus Spach |
| Verified by | Towner, Howard Frost |
| Annotation Text | Isotype; 1969-1970 |
| Taxon Reference | (for Calylophus drummondianus Spach) Ann. Sci. Nat., Bot. 1835. ser. 2, 4: 273. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
