Cliffordingbridge's picture

Unidentified Grass Species?

Observed: 1st October 2013 By: Cliffordingbridge
1.10.13 007
1.10.13 008

This species was found growing happily on an allotment site at Witts Hill, Southampton.
Similar to Maize but much smaller & finer.
Has anyone got any ideas?

Species interactions

No interactions present.


lavateraguy's picture

There were two copies of this observation ...

... and in the other one I added an identification as Cynodon (the illustration of Digitaria in Rose (the grass, sedge and fern book) showed Digitaria having the racemes arranged pinnately, rather than palmately).

cicuta58's picture


As ambroise points in the other observation, the branches are not all from one point.


Cliffordingbridge's picture


Good work cicuta58

lavateraguy's picture


iSpot thinks that this is a bivalve mollusc. (iSpot doesn't handle the case when the same name is used for an animal and for a plant well.)

dejayM's picture


I came because I was researching a marine shell.
I found this so it seems that Astartidae is a broken branch.
Should it read Asteraceae?
Can someone explain now?

lavateraguy's picture

iSpot doesn't handle subhomonyms well.

Subhomonyms are cases where the same name has been used (legitimately) in two or all three of the nomenclatural codes (zoological, botanical and bacteriological). iSpot should be able to use the group to identify the correct homonym, but doesn't. Astartidae is apparently a recognised family name for some bivalve molluscs. The plant Digitaria is a grass and belongs to Poaceae. Asteraceae isn't involved at all.

dejayM's picture


OK thanks. I looked for other occurrences of Digitaria (the grass). There some in Global and ZA and it seems that Taxonomy is sorted in those dictionaries (CoL and SANBI). This is the ONLY UKSI-based post of Digitaria that I could find, so it should be simple for 'someone' to fix (should it be desired). I found it by searching iSpot for Veneroida (Bivalve).
I wonder if an identical ID was added here it might, just might, invoke the Poaceae tree.
Interestingly Digitaria digitaria (the similarly rare mollusc) is Astartidae (Familiy)