| Classification | Malvaceae: Malvastrum |
| Classification 1 | Malvaceae: Malacothamnus |
| Harvard University Herbaria Barcode(s) | 00052912 |
| Type Status | Isolectotype |
| Collector | G. Thurber |
| Collector number | 709 |
| Country | United States of America |
| State | Arizona |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Arizona |
| Locality | Santa Cruz Valley |
| Date Collected | 1852-07-** |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/cd551705-05fd-4ce4-8887-e0eedd6db52e |
| Harvard University Herbaria Barcode | 00052912 |
| Herbarium | GH |
| Family | Malvaceae |
| Type Status | Isolectotype |
| Isolectotype of | Malvastrum thurberi A. Gray |
| Verified by | Morse, Keir |
| Date Determined | 2022 |
| Determination Remarks | [filed under] |
| Annotation Text | Systematics of the genus Malacothamnus |
| Taxon Reference | (for Malvastrum thurberi A. Gray) Mem. Amer. Acad. Arts 1854. n.s. 5: 307. |
| Family | Malvaceae |
| Type Status | Isolectotype |
| Isolectotype of | Malvastrum thurberi A. Gray |
| Verified by | Gandhi, Kancheepuram Natarajan |
| Date Determined | 1996 |
| Taxon Reference | (for Malvastrum thurberi A. Gray) Mem. Amer. Acad. Arts 1854. n.s. 5: 307. |
| Family | Malvaceae |
| Determination | Malacothamnus fasciculatus (Nuttall ex Torrey & A. Gray) Greene |
| Determined by | Morse, Keir |
| Date Determined | 2022 |
| Determination Remarks | [current name] |
| Annotation Text | var. fasciculatus |
| Family | Malvaceae |
| Determination | Malacothamnus fasciculatus (Nuttall ex Torrey & A. Gray) Greene |
| Determined by | Fryxell, Paul Arnold |
| Determination Remarks | [cited in Syst. Bot. Monogr. 25: 272. 1988] |
| Family | Malvaceae |
| Determination | Malvastrum thurberi A. Gray |
| Determination Remarks | [label name] |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
