| Classification | Dryopteridaceae: Nephrodium | 
| Classification 1 | Dryopteridaceae: Dryopteris | 
| Classification 2 | Aspidiaceae: Aspidium | 
| Barcode(s) | 01092293 | 
| Type Status | Isosyntype | 
| Collector | H. A. Purdie & G. E. Davenport | 
| Country | United States of America | 
| State | Massachusetts | 
| Geography | North America: North America (CA, US, MX) (Region): United States of America: Massachusetts: Middlesex County: Concord | 
| Locality | Concord Mass. | 
| Date Collected | 1903-08-** | 
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/7952d557-8490-47b8-a889-be9e525e3f92 | 
| Harvard University Herbaria Barcode | 01092293 | 
| Herbarium | NEBC | 
| Family | Dryopteridaceae | 
| Type Status |  Isosyntype | 
| Isosyntype of |  Nephrodium spinulosum var. concordianum Davenport | 
| Verified by | Kittredge, Walter Tobey | 
| Date Determined | 2017 | 
| Determination Remarks |  [filed under] | 
| Taxon Reference | (for  Nephrodium spinulosum var. concordianum Davenport) Rhodora 1904. 6: 33. | 
| Family | Dryopteridaceae | 
| Determination |  Dryopteris campyloptera (Kunze) Clarkson | 
| Determination Remarks |  [current name] | 
| Annotation Text | fide R. L. Angelo, Vascular Flora of Concord, Massachusetts
(http://www.ray-a.com/ConcordMassFlora.pdf)
Accessed 13 October 2017
 | 
| Family | Aspidiaceae | 
| Determination |  Aspidium spinulosum var. concordianum Eastman | 
| Determined by | [annotation on sheet] | 
| Family | Dryopteridaceae | 
| Determination |  Nephrodium spinulosum var. concordianum Davenport | 
| Determination Remarks |  [label name] | 
| Annotation Text | Rhodora | 
| Preparation Type | Sheet | 
| Preparation Method | Pressed |