| Classification | Juncaceae: Juncus |
| Harvard University Herbaria Barcode(s) | 00029633 |
| Type Status | Holotype |
| Collector | M. L. Fernald, B. H. Long & D. H. Linder |
| Collector number | 20654 |
| Country | Canada |
| State | Nova Scotia |
| Geography | North America: North America (CA, US, MX) (Region): Canada: Nova Scotia: Shelburne County (Nova Scotia) |
| Locality | Barrington; Boggy barrens near Clement Pond |
| Date Collected | 1920-08-09 |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/6fefd8fa-e94d-4445-a8cf-b55e02b082db |
| Harvard University Herbaria Barcode | 00029633 |
| Herbarium | GH |
| Family | Juncaceae |
| Type Status | Holotype |
| Holotype of | Juncus effusus var. costulatus Fernald |
| Verified by | P. F. Zika |
| Taxon Reference | (for Juncus effusus var. costulatus Fernald) Rhodora 1921. 23: 239. |
| Family | Juncaceae |
| Determination | Juncus pylaei Laharpe |
| Determined by | L. Hamet-Ahti |
| Determination Remarks | [current name] |
| Sex | not determined |
| Phenology | NotDetermined |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
