Leafy stems showing location of dye in Dyers knotweed - Specimen details
| Catalogue Number: 99351 | |||||
|---|---|---|---|---|---|
| No Image | Plant Name | 134.00 POLYGONACEAE Persicaria tinctoria | Entry Book Number | 1.2016 | |
| Artefact Name | Leafy stems showing location of dye in Dyers knotweed | Vernacular Name | |||
| Iso Country | Not defined | TDWG Region | Not defined | ||
| Parts Held | Leafy stems showing location of dye in Dyers knotweed | Geography Description | |||
| Uses | Leafy stems showing location of dye in Dyers knotweedUse: User: Not defined | TDWG use | |||
| Storage | Bottles, boxes etc | Related Items | |||
| Donor | Hill, David J. | Donor No | |||
| Donor Date | 20/01/2016 | Donor Notes | |||
| Collector | Hill, Robin (FRS) | Collector No | |||
| Collection Notes | Collection Date | 00/00/1970 | |||
| Exhibition | Expedition | ||||
| Number Components | Publication | ||||
| Notes: | Robin Hill hung shoots in chloroform vapour, enzymes release indoxyl (a precursor to indigo that forms in the leaf), then the clhlorophyll pigments were extracted with 80% acetone. This reveals where the indigo is formed. It is mainly concentrated in th, e youngest leaves (this is the same for woad too). x0Dx0AThis same experiment was also carried out on the flowers of Calanthe included. Some dyed wool samples are included. | ||||
| Determinations: | 134.00 POLYGONACEAE Persicaria tinctoria (Aiton) H.Gross 134.00 POLYGONACEAE Polygonum tinctorium Aiton 169.00 ORCHIDACEAE Calanthe | ||||