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Re: [aroid-l] Rare Chinese Aroid

  • Subject: Re: [aroid-l] Rare Chinese Aroid
  • From: "Peter Boyce" boyce@pothos.demon.co.uk
  • Date: Sun, 25 May 2003 08:38:30 +0200

Hi Leslie, Michael, et al.

I'm slightly confused (it doesn't take much!). 

Leslie, in your original posting you enquired about germinating Schismatoglottis gigantea. This is an unpublished and invalid name for the Sabah (N Borneo) endemic Schismatoglottis corneri. You'll recall I asked if your seeds came from habitat and also, in the same email (I think), assuming that perhaps you'd collected them yourself, asked if you'd encountered the endemic Colocasia oresbia, which occurs in the same mountain range as S. cornei.

If you in fact meant Homalomena (not Schismatoglottis) gigantea then that is a completely different species, although also from Borneo. Homalomena megalophylla is a Sumateran species published in 1985 and H. robusta is a species from the island of New Guinea.

If, however, the seeds you've germinated come from the Nature Products site then, assuming that the picture they have posted is a picture of the plant whose seeds they sell, then you have a pan of Alocasia macrorrizos. The give-away on the picture of the mature leaf is the lack of tissue in the space between the basal lobes where the leaf stalk and the leaf blade meet. There are three common Alocasia in Yunnan: A. navicularis, A. odora and A. macrorrizos. Only the last named lacks a wing of tissue between the basal lobes when mature (juvenile plants do have tissue there). 

Perhaps the most intriguing plant of the Nature Products site is the 'arrow leaf', which looks to be A. acuminata (need to see a whole leaf to be sure), a species hitherto recorded from Bangladesh (where it is the common alocasia) and N. Thailand. It's presence in SW China wouldn't be a sensation - lots of aroids do the pan-Himalaya run, cropping up in the mountains right across from N India to southern China - but it would be a nice addition to the aroids of the region.

Hope this helps some


----- Original Message ----- 
  From: Leslie Georgeson 
  To: boyce@pothos.demon.co.uk 
  Sent: Friday, May 23, 2003 12:55 AM
  Subject: Rare Chinese Aroid

  Hi Peter,

  What can you tell me about Homalomena gigantea?  I believe you stated that that wasn't its correct name.  (I've got about 50 seedlings now, by the way, and they are flourishing).  I just can't find any information about the plant. 

  Any information you can provide will be greated appreciated.  Thank you. 

  Leslie Georgeson

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