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Re: [Aroid-l] Please help me with Arum IDs

  • Subject: Re: [Aroid-l] Please help me with Arum IDs
  • From: "Peter Boyce" peterboyce@myjaring.net
  • Date: Thu, 25 Aug 2005 15:10:11 +0800

Hi Paige
Glad that I was able to be of help.
To tackle your points one-by-on:
dioscorides: The main problem is that in cultivation what folks are calling, e.g., cyprium, mostly do NOT match the original A. cyprium (which has a yellow-green spathe with discrete very deep purple spots and no spathe staining/flushing) and thus there is a double problem with scientific names are being misused as cultivar tags AND are being misapplied!The neatest answer with A. disocorides will be to recognize cultivars for the more distinct & stable colour expressions.
elongatum: when I looked yesterday there were no images of true elongatum on your web - the images under nigrum  were nigrum. The crucilal elongatum character is that the spadix appendix reaches to the tip of the spathe.
 orientale: Most on-line images are NOT orientale. Some are besserianum, some are gratum, a few are maculatum, one or two are cylindraceum (the new name for alpinum), yet others are italicum...
I get about a dozen identification requests a week by email and about the same a month by letter. I LOVE doing ids. Keep 'em coming!
Very best wishes
----- Original Message -----
From: "Pacific Rim" <paige@hillkeep.ca>
Sent: Thursday, August 25, 2005 11:50 AM
Subject: Fw: [Aroid-l] Please help me with Arum IDs

> To be corrected by Peter Boyce is a privilege.
> I received your answer this evening, Peter. Thank you for your help.
> Group, what do you think? Many horticultural selections of A. dioscoridis
> have lost
> their taxonomical distinction and been wrapped into one variable species.
> Fine. But given that so many of the arums in horticulture are clones, is it
> not perhaps useful to repeat their former names, e.g. "This is the plant
> formerly known as var. spectabile"? Or does that just defer understanding
> that variation is the norm?
> As for my elongatum glitch: Thank you for confirming it, Peter.  It's
> interesting how the mind keeps sifting. Already by this
> morning, my sleeping brain had signalled, "Ah-ooga, ah-ooga!" Looking at my
> web page, I realized that I had mixed up the images of nigrum and elongatum,
> and
> reposted the page.
> Peter, do other growers plague you with requests for names?
> If my orientale is orientale, some of the other orientales online must be
> something else.
> I spent months in Borneo in the early 1980s, but was focused elsewhere.
> Failed to differentiate the orchids or the
> Araceae. Thought of them all as plants.
> Paige Woodward
> paige@hillkeep.ca
> www.hillkeep.ca
> ----- Original Message -----
> From: "Peter Boyce" <peterboyce@myjaring.net>
> To: "Discussion of aroids" <aroid-l@gizmoworks.com>
> Sent: Wednesday, August 24, 2005 2:25 AM
> Subject: Re: [Aroid-l] Please help me with Arum IDs
> Hi Paige
> cf concinnatum is concinnatum x cyrenaicum
> dioscorides Spectabile Form is dioscorides var. dioscorides
> dioscorides  var. cyprium is d. var. syriacum
> dioscorides var. cyprium Dark Form is d. var. dioscorides
> dioscorides var. philistaeum is aslo d. var. dioscorides.
> A. elongatum  is A. nigrum
> A. orientale and all other names are correct
> Very best wishes
> Pete
> ----- Original Message -----
> From: "Pacific Rim" <paige@hillkeep.ca>
> To: <aroid-l@gizmoworks.com>
> Sent: Wednesday, August 24, 2005 5:31 AM
> Subject: [Aroid-l] Please help me with Arum IDs
>> Dear all: I have been struggling to give correct names to some Arums that
>> are new to me.  Yes, "The Genus Arum" is on my Christmas list. But
>> meanwhile, if anyone would like to comment, on or offline, about the
>> identity of any of the Arums on my website at
>> http://www.hillkeep.ca/bulbs%20arum.htm, I would be grateful.  I am open
>> to
>> corrections on every ID, but the ones that particularly worry me at the
>> moment are:
>> -- "Arum aff. concinnatum."  Should this be concinnatum?
>> --  all the A. dioscoridis group.
>> -- A. orientale. The photo is of the plant. But does it look like
>> orientale?
>> If not, what do you think it is?
>> With thanks,
>> Paige Woodward
>> paige@hillkeep.ca
>> www.hillkeep.ca
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