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  Aquatic Homalomena species
From: RAYMOMATTLA at cs.com on 2004.08.19 at 02:04:29(12021)
Im am trying to get any information on the Homalomena species that Mr. Homes
offered at last years IAS show and sale. Does anyone know precisely where he
collected these or has anyone had theirs to flower yet?
Michael Mattlage

From: "Julius Boos" <ju-bo at msn.com> on 2004.08.20 at 09:22:08(12024)
>From: RAYMOMATTLA@cs.com
>Reply-To: aroid-l@lists.ncsu.edu
>To: aroid-l@lists.ncsu.edu
>Subject: [aroid-l] Aquatic Homalomena species
>Date: Wed, 18 Aug 2004 22:04:29 EDT

I`d suggest that you send Pete Boyce a photo, I have the plant, it grew extremely well, the leaf blades look like a water hyacynth, correct, spatulate?? I too would like an ID, it is a VERY good aquatic plant!

From: "ron iles" <roniles at eircom.net> on 2004.08.20 at 18:18:28(12025)
Is it a plant which grows better emersed or submerged?

----- Original Message -----

From: "Alistair Hay" <ajmhay at hotmail.com> on 2004.08.20 at 20:45:41(12026)
If this is the plant I think it is (from Julius' description of looking like
water hyacinth), it is Homalomena expedita, from Sarawak. It grows in fresh
or brackish water in full sun, with the leaves emersed. It is stoloniferous
and colony forming, and I would say has weed potential in wetland areas. It
flowers infrequently, and unlike most asiatic homalomenas has solitary
rather than clustered inflorescences.
From: "Peter Boyce" <peterboyce at myjaring.net> on 2004.08.20 at 20:55:04(12027)
Hi Julius

Michael has started the ball rolling with me on this. To my mind it's Homalomena expedita, a species described very recently from Sarawak where it occurs along river and stream banks in thick yellow inundated mud in full sun. The only 'problem' is that the plants you are grwoing are said to come from Thailand/northern West Malaysia and so far H. expedita is only known from one small area in Sarawak. It's very easy growing and our plants are flowering regularly. We stand them in shallow trays of water in slight shade (since placing them in full sun is pots can lead to the roots overheating). Your comment about the leaf shape is spot-on.


From: "Peter Boyce" <peterboyce at myjaring.net> on 2004.08.20 at 21:02:36(12028)
Hi Ron

We grown it (or, at least, the species I believe it is that Michael has) in
shallow trays of water in slight shade. Growing in plastic pots in full sun,
even those aquatics used to full sun, can lead to the roots overheating.


From: RAYMOMATTLA at cs.com on 2004.08.20 at 23:34:22(12029)
Mine is doing well in the way Julius teaches to grow aquatics...half sand
half peat two inches of Lava rock at bottom and never let the water touch the
soil. I agree, they are a very easy grower and mine has already produced several
decent sized pups, and yes...very reminiscent of water Hyacinth.
I did send Pete an image but of course, it would be much easier to determine
its identity with pics of a flowering plant and/or precise locality data. I
believe Home said it was collected in Thailand but Im not positive...might have
to ask him next month at the show.
Michael Mattlage

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