Herbarium specimen: Ceratophyllum aquaticum
| Taxon: | Ceratophyllum aquaticum H.C.Watson |
|---|---|
| Locality: | |
| Institution: | Botanical Society of the British Isles (BSBI) |
| Image: |   |
| ocrnotes: | Ceratophyllum aquaticum, " Wats, in Lond. Cat,, ed. hi." Syme, E. B., ed. iii., vol. VIII, pi. 1266-7. This is the form I recorded as C. apiculatum, Chamisso, in ' Journal of Botany,' vol. 25, p. 282, The specimens on which I founded that record had no spines at the base, but two minute tubercles in their place. Afterwards, on gathering a large series of examples, I found, on the same branch, fruits with (1) no spines at the base, (2) with two tubercles, (3) with one spine, (4) with two spines, and (5) with a winged spine. As all these varieties in the fruit occurred in apparently full grown examples, and as the absence of spines seemed in no wise to depend upon the maturity of the fruit, I am induced to believe that our fenland plant is better placed under Mr. Watson's aggregate C. aquaticum. Possibly all Chamisso's "species," or "sub-species," have no substantial existence in nature, but may be, like our fenland varieties, states of one plant. Professor Babington names our fenland plant C. demersum, L., a name which may fairly be given to its usual state ; but, looking at habit and foliage alone, we certainly have a plant that is well described |
| Filing note: | BEC Report 1887 |
Associated records
Other specimen entries from this sheet.| taxon | locality | collectors | date | institution | ||
| + | Salix phylicifolia | GB, VC27 East Norfolk, Sprowston Cultivated | Edward Francis Linton | 10/5/1887 28/9/1887 | BSBI | |
| + | Salix | GB, VC92 South Aberdeenshire, Braemar | William Richardson Linton | 5/8/1887 | BSBI | |
| + | Salix repens | GB, VC38 Warwickshire, Honiley | Henry Bromwich | 4/1887 8/1887 | BSBI | |
| + | Salix lapponum | GB, VC92 South Aberdeenshire, Coire Ceann-mor | William Richardson Linton | 4/8/1887 | BSBI | |
| + | Salix arbuscula | GB, VC88 Mid Perthshire, Ben Laoigh [Ben Lui] | Henry & James Groves | 17/8/1887 | BSBI | |
| + | Salix myrsinifolia | GB, VC92 South Aberdeenshire, Coire Ceann-mor | William Richardson Linton | 4/8/1887 | BSBI | |
This sheet was documented by volunteers from the herbarium@home project.
Log-in to edit this specimen or crop examples of handwriting.
Documented by qgroom on 18th January 2008.
