| Classification | Euphorbiaceae |
| Classification 1 | Euphorbiaceae: Euphorbia |
| Classification 2 | Euphorbiaceae: Chamaesyce |
| Classification 3 | Euphorbiaceae: Euphorbia |
| Harvard University Herbaria Barcode(s) | 00047827 |
| Type Status | Holotype |
| Collector | H. S. Gentry |
| Collector number | 789 M |
| Country | Mexico |
| State | Sonora |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Sonora: Álamos |
| Locality | Disto. Alamos |
| Date Collected | 1933-11-13 |
| Habitat | Palm-oak |
| Vernacular Name | Golondrina |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/0517191f-8ad9-4195-9c72-c899b88098c2 |
| Harvard University Herbaria Barcode | 00047827 |
| Herbarium | GH |
| Family | Euphorbiaceae |
| Determination | Euphorbia Linnaeus |
| Determination Remarks | [is label name] |
| Family | Euphorbiaceae |
| Determination | Euphorbia villifera var. crepuscula L. C. Wheeler |
| Determined by | L.C. Wheeler |
| Date Determined | 1939 |
| Annotation Text | Type |
| Family | Euphorbiaceae |
| Determination | Chamaesyce crepuscula (L. C. Wheeler) V. W. Steinmann |
| Determined by | V. W. Steinmann |
| Date Determined | 1994-01-** |
| Determination Remarks | [is Current name] |
| Family | Euphorbiaceae |
| Type Status | Holotype |
| Holotype of | Euphorbia villifera var. crepuscula L. C. Wheeler |
| Taxon Reference | (for Euphorbia villifera var. crepuscula L. C. Wheeler) Contr. Gray Herb. 1939. 127: 61. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
