Hi Oli Total parasite, no chlorophyll, how would they survive? All the best John ... Also, Chater in his Flora of Cardinganshire remarks in passing on an...
Hi John The short answer is, I don't know. But Arthur Chater (who, if one reads his Flora, must be seen to be one of the most observant field botanists to have...
I've seen the photo that corroborates that story. Indeed there's no plant visible above ground anywhere near the Broomrape, just the concrete post. Clearly the...
Oli, It's a big step from completely parasitic to hemiparasitic, and it _is_ the case that there is no chlorophyll in genus Orobanche, even if the gene for it...
Hi Martin Yes, I take your points. Although, to be precise, the paper says, "[t]hus, our findings are consistent with previous studies reporting that some...
What a fascinating discussion to follow at a time when, for family reasons, I haven't been able to get out much! (The weather isn't helping here in Wales...
Hi John I was wondering the same thing, but I have no information on this. As holoparasites, Orobanchs presumably form both xylem-xylem and phloem-phloem...
http://www.mendeley.com/research/direct-infection-potato-tubers-root-parasite-orobanche-aegyptiaca/ Looks like they can! (Funnily enough this is Phelipanche...
... which according to Wikipedia parasitises Helianthus. So Solanum tubers proved a popular change of diet after introduction not only for humans ? ;-) John...
I have been back today and found the site covered in woodchips and there is nothing else there except cotoneaster I went down to look for roots and found some...
Oli, You do right to pull me up on the genera parasitised by O. minor: I was being a parrot and not engaging brain or memory. I've seen it myself demonstrably...
That seems very likely, and it may help to explain some of the more unusual hosts claimed for Orobanche minor. I recall an Orobanche minor growing in the deep...
For what it's worth, I have seen O. minor var. minor on what Fred Rumsey confirmed could have been Dipsachus fullonum. This was on Afton Down roadside verge,...
Hi Martin The records of O. minor from the host families that I mentioned were taken from the paper "Gene flow between alien and native races of the...
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Ruth Dawes
Dawes.Rosedale@...
May 8, 2012 5:17 am
Hi All Is it a good year or a bad year for green-winged orchids? Ruth [Non-text portions of this message have been removed]...
Well my local colony has yet to come up.Usually there is a good show I have noticed the rust Puccinia sessilis on many orchid leaves this year, obviously due...
I would describe this year as a good year. A friend and I have recently counted over 3,000 flower spikes on a waterlogged lawn. However, their success...
Gosh, I wouldn't even think of looking for them yet, especially this year when it's been so cold. Early purples are our only orchids showing flower! Well, I am...
On a continuing *Orobanche *note, although not really related, does anyone have any views (or better still experience) of whether it could be possible to...
Hi, Seems to be a poor year certainly down here on my patch in Wiltshire. Numbers of plants down and all stunted with very little stem. Nigel Cope  ...
1) Apologies for the lateness of the last two posts. For some reason they went into the 'suspected spam' list and I don't get notified of those. 2) I note from...
Ruth and all... I haven't yet seen any, but it is a great year to do a survey of your local population for the BSBI's Threatened Plants Project - see ...
I would have thought that what Polly suggests would be impracticable. Propagation by seed would be a much better idea, though germination can be expected to be...
I can report that established Orobanche hederae is pretty tough: The house I bought in Weston-super-Mare in 1989 had it growing on ivy by the garage at the...
Many of the plants here in the south west are already going over, the first I saw in flower was on 30th March. Numbers don't seem to be very good. Rich M ...
I don't know about being still there, John, but it was quite common along shady paths on the south side of Worlebury Camp in 1962! Rodney _____ From:...
The yellow form of O. hederae, var. monochroma, is pretty good at spreading itself around from seed - as witness the gardens of Winchester near the main...
Experience in South Hampshire: Some populations near the coast started flowering very early (latter half of March), causing me to reschedule my monitoring...
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Ruth Dawes
Dawes.Rosedale@...
May 24, 2012 5:20 pm
Many thanks to Martin Rand et al for their useful feedback on the abundance of green-winged orchids this year. My own experiences echo Martins. Another...
