| Classification | Brassicaceae |
| Classification 1 | Brassicaceae: Arabis |
| Classification 2 | Brassicaceae: Boechera |
| Classification 3 | Brassicaceae: Arabis |
| Harvard University Herbaria Barcode(s) | 00127207 |
| Type Status | Lectotype |
| Collector | D. Lyall |
| Country | United States of America |
| Geography | North America: North America (CA, US, MX) (Region): United States of America |
| Locality | Northwestern Boundary from Fort Colville [Washington] to Rocky Mountains, 7000 ft. alt. |
| Date Collected | 1861 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/d3630abf-acf2-4a27-8133-dd9e69f19d69 |
| Harvard University Herbaria Barcode | 00127207 |
| Herbarium | GH |
| Family | Brassicaceae |
| Determination | Turritis stricta Graham |
| Determination Remarks | [is label name] |
| Family | Brassicaceae |
| Determination | Arabis lyallii Watson |
| Determined by | B. L. R. |
| Annotation Text | Syn. Fl. N. Amer. |
| Family | Brassicaceae |
| Determination | Arabis drummondii var. alpina S. Watson |
| Determined by | M. H. |
| Date Determined | 1935 |
| Family | Brassicaceae |
| Determination | Arabis lyallii Watson |
| Determined by | R. C. Rollins |
| Date Determined | 1940 |
| Family | Brassicaceae |
| Determination | Arabis lyallii Watson |
| Determined by | G. A. Mulligan |
| Date Determined | 1991-04-09 |
| Annotation Text | Not a type of this taxon |
| Family | Brassicaceae |
| Determination | Boechera lyallii (S. Watson) Dorn |
| Determined by | Michael Windham (UT) & Ihsan Al-Shebaz (MO) |
| Date Determined | 2006 |
| Determination Remarks | [is Current name] |
| Family | Brassicaceae |
| Type Status | Lectotype |
| Lectotype of | Arabis lyallii Watson |
| Verified by | K. Gandhi |
| Date Determined | 2007-04-12 |
| Determination Remarks | Remarks: Rollins (Rhodora 43: 365-367. 1941) followed Hopkin's treatment. However, Mulligan (Rhodora 97: 147. 1996 ("1995")) and Holmgren (Intermountain Fl. 2B: 368. 2005) treated A. lyallii as a nom. & stat. nov. for A. drummondii var. alpina S. Watson 1871 (non A. alpina L. 1753) |
| Taxon Reference | (for Arabis lyallii Watson) Proc. Amer. Acad. Arts Feb 1876. 11: 122. |
| Sex | not determined |
| Phenology | Flower |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
| Item Remarks | mounted with 252914 |
