| Classification | Brassicaceae: Arabis |
| Classification 1 | Brassicaceae: Boechera |
| Harvard University Herbaria Barcode(s) | 00018667 |
| Type Status | Isolectotype |
| Collector | T. J. Howell |
| Collector number | 664 |
| Country | United States of America |
| State | Oregon |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Oregon |
| Locality | Ashland Butte, Siskiyou Mountains |
| Date Collected | 1887-07-** |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/7d1c7a82-afd6-47f5-be7a-ee014b0a23c1 |
| Harvard University Herbaria Barcode | 00018667 |
| Herbarium | GH |
| Family | Brassicaceae |
| Type Status | Isolectotype |
| Isolectotype of | Arabis howellii S. Watson |
| Verified by | W. T. Kittredge |
| Date Determined | 2009 |
| Determination Remarks | LT: (ORE) |
| Taxon Reference | (for Arabis howellii S. Watson) Proc. Amer. Acad. Arts 1890. 25: 124. |
| Family | Brassicaceae |
| Determination | Boechera howellii (S. Watson) Windham & Al-Shehbaz |
| Determined by | Michael Windham (UT) and Ihsan Al-Shehbaz (MO) |
| Date Determined | 2006 |
| Determination Remarks | [current name] |
| Family | Brassicaceae |
| Determination | Arabis platysperma var. howellii (Watson) Jepson |
| Determined by | R. C. Rollins |
| Date Determined | 1939 |
| Annotation Text | Type |
| Family | Brassicaceae |
| Determination | Arabis howellii S. Watson |
| Determined by | B. L. Robinson |
| Annotation Text | B.L.R. Syn. Fl. N. Amer. Type! |
| Family | Brassicaceae |
| Determination | Arabis howellii S. Watson |
| Determined by | S. Watson |
| Determination Remarks | [S. Watson (scripsit)] [label name] |
| Annotation Text | n. sp. |
| Sex | not determined |
| Phenology | FlowerAndFruit |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
