Feedback request: Rumex obtusifolius (17916)

[mossysal]

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Specimen #295793

Taxon:	Polygonaceae: Rumex obtusifolius L. ("Broad-leaved Dock") named by J Fraser Fruiting sepals reticulate and with subulate teeth
Filed in taxon folder:	Polygonaceae: Rumex obtusifolius L. ("Broad-leaved Dock")
Collected by:	Mr Harold Stuart Thompson
Collection date:	26/5/1931
Locality:
ex herb:	Mr Harold Stuart Thompson
Institution:	University of Birmingham (BIRM)
Image:

Documented by mossysal on 23^rd April 2010.

Specimen #295794

Taxon:	Polygonaceae: Rumex obtusifolius L. ("Broad-leaved Dock") named by J Fraser Correct.
Filed in taxon folder:	Polygonaceae: Rumex obtusifolius L. ("Broad-leaved Dock")
Collected by:	Mr Harold Stuart Thompson
Collection date:	1/8/1933
Locality:	Great Britain, VC34 West Gloucestershire, Clifton, ST57, Saville Place
ex herb:	Mr Harold Stuart Thompson
Institution:	University of Birmingham (BIRM)
notes:	These root leaves are blunter and shorter than some of those at corner of the Causeway, May 10th, (see sheet below)

Inferred details are marked.

Documented by mossysal on 23^rd April 2010.

Specimen #295795

Taxon:	Polygonaceae: Rumex sanguineus x obtusifolius = R. x dufftii Hausskn. named by Eric Frederic Drabble The (detached) lower leaf on my sheet has unmistakeable sanguineus characters, while the fruiting sepals seem to indicate obtusifolius. I think it is correctly named
Other name:	Polygonaceae: Rumex sanguineus x obtusifolius = R. x dufftii Hausskn. named by Danser 1933 Probably some hybrid of obtusifolius perhaps R. obt x sanguineus though different from the specimens seen by me up to the present; the latter have much narrower valves.
Filed in taxon folder:	Polygonaceae: Rumex obtusifolius L. ("Broad-leaved Dock")
Collected by:	Mr Harold Stuart Thompson
Collection date:	27/8/1932
Locality:	Great Britain, VC34 West Gloucestershire, Clifton, ST57
ex herb:	Mr Harold Stuart Thompson
Institution:	University of Birmingham (BIRM)
notes:	No specimens kept HST

Inferred details are marked.

Documented by mossysal on 23^rd April 2010.

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User comments about this sheet

mossysal wrote

1. Must Fraser have grown these on? No sign of flowers on these seedlings!
3. added in spite of lack of specimen because of interesting notes. For info on Danser: Benedictus Hubertus Danser (May 24, 1891, Schiedam, Netherlands – October 18, 1943, Groningen), often abbreviated B. H. Danser, was a Dutch taxonomist and botanist. Danser specialised in the carnivorous plant genus Nepenthes. In 1928, Danser made an exhaustive revision of the genus, recognising 65 species in "The Nepenthaceae of the Netherlands Indies". Today, over 120 species of Nepenthes are known, but Danser's work is still often referenced by specialists in the field. Nepenthes danseri is named after him.
Danser died in Groningen on October 18, 1943 http://en.wikipedia.org/wiki/B._H._Danser