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Neville H. Howcroft
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, April 28, 2005 - 05:41 pm: | 
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Peter,
I have tried posting an acknowledgment to you but i may have mucked it up. First thank you for emailing me the copy of the Bulbophyllum paper. It is very interesting and very useful and i hope puts the question of the identity of the kimbe Bulbophyllum to rest.
Also - i have seen some of dr. Tan hongs papers and received one recently. I am collaborating with him and his co author in some fruit fly research.
Many thanks again and please send your mail address so as i can reciprocate with some papers.
Best wishes
Nev. |
Peter O'Byrne
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, April 28, 2005 - 12:45 am: |
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Nev,
are yuo familiar with the fascinating work of Tan Keng-Hong and Ritsuo Nishida on Bactrocera fruit flies and (a) Bulbophyllum patens and (b) B. cheiri ?
They determined that B. patens attracts male fruit flies of several (at least 4) Bactrocera species using zingerone as the attractant. Male flies of one of these species use the zingerone as a pheronome to attract females. A different species converts the zingerone into zingerol, which is released via the rectal gland; also to attract females. Fruitflies are classified as attracted to either methyl eugenol or rasberry ketone; B. patens is the first known plant species capable of attracting flies from both groups ... and it uses a single attractant to do this. J. Chem. Ecol. 26 (2): 533-546 (2000)
B. cheiri uses methyl eugenol as an attractant, and attracts males of at least 4 species of Bactrocera fruitfly, but only those of the ME-seeking group. Raspberry-ketone-seeking flies ignore this species. J. Chem. Ecol. 28 (6): 1161-1172 (2002)
All the fly species mentioned in these articles are common pests with a wide distribution.
Cheers,
Peter |
Wolfgang H. Bandisch
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 27, 2005 - 09:25 am: |
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Peter,
I don't have the description of B. sylviae from Leslie (same applies to B. howcroftii, levyae, kutubuense etc.) but I am quite sure that full descriptions of all the Bulbophyllum species that I have found are in Emly Siegerist's Bulbophyllum book. I don't have the book with me here in PNG but when I go to Brisbane next week I can try and locate the details.
I post another image of B. hahlianum taken this morning in the garden.
Thanks for sending me the description of B. sinapsis.
Best,
Wolfgang |
Neville H. Howcroft
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 27, 2005 - 07:00 am: |
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Peter,
That is a nice form. Your comments that not all species in the section Sestochilus attract the flies is interesting. However if you take all the ones that have been put into the section Stenochilus -which is currently lumped with Sestochilus then all of these I have seen so far attract the fruit flies. It will be interesting to see how things pan out with the current studies on these two sections. Currently I am collaborating in studies on the fruit flies and attractants with this group and in fact this morning will be my last collection of flies to assist in this study. My B. hahlianum has just produced its last flower which opened at 5 am with one fly already there.
Your kimbe plant is an interesting colour form and I hope i can secure one specimen for the collection here for study. I have seen this form before in the Liamo hotel at Kimbe and captured it and the flies on video. You will notice on the photo, which Wolfgang kindly sent in for me, that it has 3 species of flies. The Kimbe one I saw appeared to have a different species attracted to it, so it will be interesting to see how many specie these orchids can attract at a time and if there are particular species that specific to the areas where the orchid occurs.
Best Wishes
Nev. |
Peter O'Byrne
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 27, 2005 - 03:43 am: |
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Wolfgang,
I called the plant "B. affin. hahlianum" because in my opinion it was closer to B. hahlianum than any other #Sestochilus I knew of. Yes, there are several differences, hence the "affin".
Since writing my book I've found out that those small striped insects are actually fruit flies, so "bees" is an error. However, the observation about the lack of odour and the lack of flies was what I observed ... and, like you, I thought it notable, which is why I mentioned it. Not all members of #Sestochilus have odours or attract fruit-flies.
Did Leslie Garay ever send you a copy of the publication containing B. sylviae ? I don't have the name in my database, or the paper in my library, and it isn't listed on either IPNI or the KEW Monocot database.
I'll copy the B. sinapsis direct to you tomorrow (plus a copy direct to Nev.)
Peter |
Peter O'Byrne
Rating: N/A
Votes: 0 (Vote!) | | Posted on Wednesday, April 27, 2005 - 03:16 am: |
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Here is my contribution to the B. hahlianum collection. The plant was from Kimbe. WNB. |
Wolfgang H. Bandisch
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 26, 2005 - 05:17 pm: |
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Neville has asked me to assist in uploading his picture of B. hahlianum as below:
Wolfgang |
Neville H. Howcroft
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 26, 2005 - 01:55 pm: |
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Dear Wolfgang, Peter and Sulistyono,
The Photo that Wolfgang sne tin that has the nice striations is what I know as B. hahlianum. Its a nice form and i have collected something like this from a place called Butum on the Gazelle peninsula and I have seen a similar form in West New Britain. On the coast around here near Kokopo and keravat we have a nother colour form which i will try to send with this post. The pollinators are fruit flies and not bees.
The section Stenochilus has been lumped with the section Sestochilus which seems to include a few species that would be better placed in other sections or new sections. I understand that a study is being completed now on these so we will all have to wait.
Nev. howcroft |
Dr. Joseph Arditti
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 26, 2005 - 09:14 am: |
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Wolfgang,
Excellent and interesting pictures.
(Message edited by jarditti on April 25, 2005) |
Wolfgang H. Bandisch
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 26, 2005 - 08:55 am: |
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Peter,
I am getting confused here. If the species as pictured in Sulystiono's post (B. tollenoniferum) is now reduced to a synonym of B. macranthoides and the species thought to be B. macranthoides is now described as B. sinapsis where does B. sylviae fit in?
In your book you refer to what I understand is now B. sylviae as Bulb. aff. hahlianum. B. hahlianum does not look anything like B. sylviae.
Attached is a photo of B. hahlinanum
Reading your description of Bulb. aff. hahlianum it struck me that you stated "the flowers are odourless and do not attract swarms of bees" when both (odour and fruit flies) are some of the most noticable 'features' of this group of Bulbophyllums (hahlianum, tollenoniferum, sylviae, tortum) as clearly shown in images posted by me.
Wolfgang |
Wolfgang H. Bandisch
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 26, 2005 - 07:26 am: |
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Peter,
thanks for your explanation. Please email me a copy of the description of B. sinapsis.
I will have a look in your book as well.
The species that I used to refer to as Bulbophyllum affin. hahlianum eventually got described by Garay as Bulb. sylviae (after Sylvia Aiba). A photo is attached.
Wolfgang |
Neville H. Howcroft
Rating: N/A
Votes: 0 (Vote!) | | Posted on Tuesday, April 26, 2005 - 07:08 am: |
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Peter,I would appreciate a copy of your paper on B. sinapsis if you could send me one as well as Wolfgang. I can remember the article Wolfgang talks about where the plant was called B. macranthoides. The other Bulbo illustrated here by Sulist. appears to be the same as the one described as B.tollenoniferum.I feel pretty sure this is the one.
Best Wishes
Nev. Howcroft. |
Peter O'Byrne
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 25, 2005 - 07:30 pm: |
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Wolfgang,
I've got my references in front of me now. Your plant is indeed B. sinapsis Vermeulen & O'Byrne, published in Gard. Bull. Singapore 55(1): 156 (2003). I can e-mail you a copy if you want. I collected a specimen in Kimbe (where it was quite common) that flowered for me in Port Moresby. I sent Jaap the photo, and he recognised it as a plant in Pieter Jongejan's extensive PNG collection. Shortly after my plant flowered you reported the same species from the Sogeri Plateau & Varirata.
I described and illustrated it in my "Low. Orc. PNG." on pg 456-457 under the name "Bulbophyllum affin. hahlianum", along with a comment that I didn't agree with Siegerist's suggestion that it was B. macranthoides Krzl.
The determination that B. tollenoniferum is a syn. for B. macranthoides is Jaap's; I don't know if he's ever published it, but the name appears as a syn. on the Kew database:
http://www.kew.org/data/monocots/
Cheers,
Peter |
Wolfgang H. Bandisch
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 25, 2005 - 01:06 pm: |
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Peter,
yes, I most probably gave you a cutting and yes Leslie Garay identified that species years ago as B. macranthoides. I remember writing about it in the PNG Orchid News (the printed version) some years ago.
If that's not correct now I will update my files accordingly.
wolfgang |
Peter O'Byrne
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 25, 2005 - 10:28 am: |
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Wolfgang,
I'll check this when I get home tonight (I'll also supply the ref. you asked for), but I'm fairly certain your plant is B. sinapsis Vermeulen. It is illustrated in my PNG book as Bulbo. affin something... I'll provide a page number tonight. If you're in a hurry, it's the only illustration in my "Low Orc PNG" book by Jaap. I think the plant originated with you ... you gave me a cutting.
Was your plant identified by Garay ? There was a time when he provided growers with the name "B. macranthoides" for B. sinapsis. The two taxa are (as your photo shows) clearly distinct.
Cheers,
Peter |
Wolfgang H. Bandisch
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 25, 2005 - 07:26 am: |
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Peter,
B. macranthoides is quite different from B. tollenoniferum. Who reduced one to a synonym of the other?
Wolfgang
(Message edited by webmaster on April 24, 2005) |
Peter O'Byrne
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 25, 2005 - 03:30 am: |
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Sulist,
you'll find the Bulbo on pages 462-463 of my "Lowland Orchids of PNG Book. You really ought to check the available sources for yourself before you post queries here. In my book I called it B. tollenoniferum J.J.Sm., but that name has since been reduced to a syn. of B. macranthoides Krzl.
The Diplo looks similar to Diplocaulobium obyrnei Harris, (page 196-197 of my book) but it is impossible to be certain because your photo doesn't show the arrangement of keels.
I don't mind helping you identify plants, but I do expect you to make an effort for yourself before taking up my time. Also, I think I've asked you before to PLEASE include a ruler in your photos, and also to make sure the photos show all the characters clearly. If you don't make more effort, then I'm going to stop responding to your queries.
Cheers,
Peter |
Sulistyono
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 25, 2005 - 01:19 am: |
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Dear All,
This Diplo is also from Papua, exactly from Timika.   |
Sulistyono
Rating: N/A
Votes: 0 (Vote!) | | Posted on Monday, April 25, 2005 - 01:16 am: |
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Does anyone know the identity of this Bulbo? This is from Papua.
regards,
Sulist |
Peter O'Byrne
Rating: N/A
Votes: 0 (Vote!) | | Posted on Thursday, March 31, 2005 - 07:21 pm: |
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Oops ... it happens sometimes. The correct species name is Eulophia graminea Lindley, not E. graminifolia as I recently posted. Don't know what I was thinking about when I typed that !
Steve, thanks for the alert.
Peter |
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