| Classification | Asteraceae: Perezia |
| Classification 1 | Asteraceae: Acourtia |
| Harvard University Herbaria Barcode(s) | 00022817 |
| Type Status | Holotype |
| Collector | C. G. Pringle |
| Collector number | 5966 |
| Country | Mexico |
| State | Oaxaca |
| Geography | North America: North America (CA, US, MX) (Region): Mexico: Oaxaca |
| Locality | Tomellin Canyon, 3000 feet |
| Date Collected | 1895-12-01 |
| Elevation | 914 m |
| Habitat | In shade |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/3475d905-fb37-45ce-b406-6f01d7cd4899 |
| Harvard University Herbaria Barcode | 00022817 |
| Herbarium | GH |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Perezia umbratilis B. L. Robinson & Greenman |
| Verified by | L. Cabrera Rodriguez (TEX) |
| Date Determined | 1992 |
| Taxon Reference | (for Perezia umbratilis B. L. Robinson & Greenman) Proc. Amer. Acad. Arts 1896. 32: 50. |
| Family | Asteraceae |
| Type Status | Holotype |
| Holotype of | Perezia umbratilis B. L. Robinson & Greenman |
| Verified by | V. M. Bates (A/GH) |
| Date Determined | 1985 |
| Taxon Reference | (for Perezia umbratilis B. L. Robinson & Greenman) Proc. Amer. Acad. Arts 1896. 32: 50. |
| Family | Asteraceae |
| Determination | Acourtia umbratalis (B. L. Robinson & Greenman) B. L. Turner |
| Determined by | B. L. Turner (LL/TEX) |
| Date Determined | 1993 |
| Determination Remarks | Two determinations follow: Rzedowskiela umbratalis (B. L. Rob. & Greenman) L. Cabrera & B. Simpson [ined] det: L. Cabrera Rodriguez (TEX) 1992 and Rzedowskiela umbratalis (B. L. Rob. & Greenman) L. Cabrera, in prep. det: L. Cabrera Rodriguez (TEX) 2002 [current name] |
| Family | Asteraceae |
| Determination | Acourtia umbratalis (B. L. Robinson & Greenman) B. L. Turner |
| Determined by | B. L. Turner (LL/TEX) |
| Date Determined | 1978 |
| Annotation Text | Holotype |
| Family | Asteraceae |
| Determination | Perezia nudicaulis A. Gray |
| Determination Remarks | [label name] |
| Annotation Text | P. umbratilis, Rob. & Greenman, n. sp. [written on bottom part of label in a different hand from collector information] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
