| Classification | Isoetaceae: Isoetes |
| Harvard University Herbaria Barcode(s) | 00424551 |
| Type Status | Isosyntype |
| Collector | C. G. Pringle |
| Country | United States of America |
| State | California |
| Geography | North America: North America (CA, US, MX) (Region): United States of America: California: Siskiyou County |
| Locality | Castle Lake. Mountains about the head waters of the Sacramento River |
| Date Collected | 1881-08-14 |
| Elevation | 1829 m |
| Verbatim Elevation | 6000 ft. |
| Container | Flora of the Pacific Slope. California. |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/7cf75f43-6981-43f4-a547-dac13dc792ff |
| Harvard University Herbaria Barcode | 00424551 |
| Herbarium | GH |
| Family | Isoetaceae |
| Type Status | Isosyntype |
| Isosyntype of | Isoetes lacustris var. paupercula Engelmann |
| Verified by | Kathryn Mauz |
| Date Determined | 2017-01-16 |
| Determination Remarks | [filed under] |
| Taxon Reference | (for Isoetes lacustris var. paupercula Engelmann) Trans. Acad. Sci. St. Louis 1882. 4: 377. |
| Family | Isoetaceae |
| Determination | Isoetes occidentalis L. F. Henderson |
| Determined by | Shackleford, Ian |
| Date Determined | 1995-09-12 |
| Determination Remarks | [current name] |
| Family | Isoetaceae |
| Determination | Isoetes lacustris var. paupercula Engelmann |
| Determination Remarks | [label name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
