| Classification | Asteraceae: Helianthus |
| Barcode(s) | 00872861 |
| Collector | H. D. Thoreau |
| 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 | Moore's swamp |
| Date Collected | 1856-08-12 |
| Remarks | [“Aug. 12. . . Am surprised to see still a third species or variety of helianthus (which may have opened near August 1st, say only a week). Only the first flowers out. At edge of the last clearing south of spring. I cannot identify it. It has very short but not margined petioles; leaves narrower than yesterday’s, and rough beneath as well as above. The outer scales of involucre a little the longest; but I think this of little importance, for the invoucre of the H. divaricatus is very variable, hardly two alike; rays about ten. In som respects it is most like H. strumosus, but not downy beneath.2 2 It has decidedly thick leaves, unlike that of Aug. 29, and flowers two and a half or more inches in diameter.” Journal 8: 462-463. 1856] |
| GUID | http://purl.oclc.org/net/edu.harvard.huh/guid/uuid/725cc591-4887-4fd6-b6e3-2fe874c3089d |
| Harvard University Herbaria Barcode | 00872861 |
| Herbarium | GH |
| Family | Asteraceae |
| Determination | Helianthus decapetalus Linnaeus |
| Determined by | Angelo, Raymond Louis |
| Date Determined | 2018-10-09 |
| Determination Remarks | [current name] |
| Family | Asteraceae |
| Determination | Helianthus strumosus Linnaeus |
| Determination Remarks | [label name] |
| Subcollection | Thoreau Herbarium |
| Preparation Type | Sheet |
| Preparation Method | Pressed |
