geff.2007's picture

Guernsey Fleabane (3)

Observed: 11th October 2013 By: geff.2007geff.2007’s reputation in Plantsgeff.2007’s reputation in Plantsgeff.2007’s reputation in Plantsgeff.2007’s reputation in Plantsgeff.2007’s reputation in Plants
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Description:

First 4 photos are from one site, 5 & 6 from a different site. No hairs on any of the leaves. Stems were not brittle and sparsely covered with hairs. Both growing in pavement verges. Please refer to comments on earlier o.b. Node 374117.

Identifications
Species interactions

No interactions present.

Comments

lavateraguy's picture

From Stace ...

... "phyllaries yellowish-green, glabrous to sparsely hairy, with conspicuous hyaline margin" indicates C. canadensis or C. floribunda.

[You could have given the genus - it is Conyza rather than Erigeron or Pulicaria.]

Ambroise's picture

Fron the pictures the

Fron the pictures the phyllaries look rather densly hairy but it is difficult to say.

lavateraguy's picture

FAO Nicandra

According to how iSpot is supposed to work ("etiquette" - see under the Help tab) you shouldn't add a new identification which is the same as a previous identification; instead you should just click on "I agree".

And the two boxes on the identification form are intended for the scientific and vernacular names - not, as you have been using them, for the genus and epithet.

geff.2007's picture

Have added two close ups both

Have added two close ups both plants in the hope that this confirms one or the other. At the end of the day it is a question of what is one's perception is of terms glabrous, sparsely or densely, hairy. I am leaning towards C.sumatrensis. I really am thankful to you all for your interest.

lavateraguy's picture

You might have one of each

Neither has glabrous phyllaries, which leaves us with the ambiguous distinction between sparsely and densely hairy.

The first has phyllaries with prominent hyaline margins. In the second the hyaline part of the phyllaries appears to be restricted to the tips. They also appear to be hairier.

I've made a mental note to take some photographs of Conyza canadensis when I have the opportunity. However I wouldn't be surprised if we don't get the whole range (5 varieties in Sells) of C. canadensis round here, so it won't necessarily help you.

geff.2007's picture

Thanks again lavateraguy - I

Thanks again lavateraguy - I feel that this will remain an i.d that is always in doubt.

spins's picture

This is C. sumatriensis

No doubt about it

geff.2007's picture

Thanks for your comments on

Thanks for your comments on all three of my postings - it seems at the end of the day I have ended up with three sightings of C.sumatrensis although each appeared to look different. I will edit accordingly and will keep a look out for the i.d. points you made on the earlier o.b.