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Xanthosoma is X. sagittifolium

  • Subject: Xanthosoma is X. sagittifolium
  • From: "Julius Boos" <ju-bo@msn.com>
  • Date: Sat, 20 Oct 2007 11:59:06 +0000

>From : 	Marek Argent <abri1973@wp.pl>
Reply-To : 	Discussion of aroids <aroid-l@gizmoworks.com>
Sent : 	Friday, October 19, 2007 5:52 PM
To : 	"Discussion of aroids" <aroid-l@gizmoworks.com>
Subject : 	Re: [Aroid-l] xanthosoma?

Dear Marek and other aroid ''nuts",

Marek and I are in agreement that the probable I.D. on the plant in the 
photos from AW taken at Cibodas Bot. Garden in Indonesia is Xanthosoma 
sagittifolia.   If anyone cares to do so, there should be on the aroid-l 
archives a long discussion on photos of a plant that, from memory, looked 
just like this, Dr. Eduardo Goncalves eventually I.D.`d it as being X. 
sagittifolia, not X. violacium.  To be certain, we must hope that it 
eventually blooms, and then examine the 'naughty bits', as my friend Wilbert 
calls them!!
One more word on this, we must bear in mind that this plant probably 
originated from tissue culture.  On a previous post, I reported that a large 
number of these were for sale at a major wholesale plant nursery here in S. 
Florida, they came out of the tissue culture lab labeled as X. atrovirens, 
and were being sold as a "Dwarf green Xanthosoma", that was until they 
outgrew the 1 gal. pots!  I I.D.`d them as being X. sagittifolia, which has 
more or less replaced the edible rhizomes ("chubas"!) of  X. robustum in 
grocery stores, at least in my neighborhood.   I now suspect (more than 
suspect, actually) that the process of tissue culture causes changes to the 
basic structure of some aroids that have undergone that process, hence the 
'new' cultivars of Alocasia, Philodendron, etc. that are on the market, the 
sellers admit that they are selections taken from large groups of plants 
from tissue culture.   We can therefor expect to see this in this species, 
so be aware of minor changes in these tissue cultured plants.
In the interest of science, and remembering that "the proof of the pudding 
is in the eating", I am presently cooking some small 'chubas' (rhizomes) I 
JUST 'harvested" off a plant I obtained from the above-mentioned Commercial 
nursery.   I want to at least try to eliminate that it might in fact be X. 
More on what is being called X. atrovirens----very rarely at Hispanic 
Groceries in this area, a limited number of smallish rhizomes or better, 
pieces of rhizome appear for sale as a food.   They are not the entire 
off-shoot, smaller rhizomes like those commonly for sale of several 
cultivars of several Xanthosoma species, but appear to be harvested from the 
main central rhizome of a plant.   They have a dark colored, almost black 
'skin' with the remains of roots, giving them a 'hairy' appearance.   The 
flesh is yellow, bordering on orange in color, with a thick 'skin', almost a 
''rind''-like covering.   When grown, the leaves have a attractive 
'silvered' appearance, are sagittitate with a sinus with no bare areas all 
the way to the juncture with the petiole.  When cooked, they have a somewhat 
'corky'/woody texture, and a wonderful peanut like flavor, quite different 
to the other Xanthosomas.   When grated and mixed with a little regular 
wheat flour and other seasonings, then fried, they are great eating, the 
nutty flavor coming through.
Ah-ha!   I have just sampled the cooked rhizomes, and they have no sign of 
the yellow color OR the nut-like flavor, and so to my taste they are X. 


>>So I add my two words to the discussion. This isn't X. violaceum which I 
>>have for many years.  X. violaceum has green, a little waxy upper side of 
>>leaves, when this plant in the photo has bluish leaf blades. X. violaceum 
>>has always violet petioles and the underside of leaves - this plant has 
>>not. Besides, the shape of the leaves doesn't resemble X. violaceum. They 
>>look rather like X. sagittifolium, maybe it even is a variety/cultivar of 
>>X. sagittifolium.

    ----- Original Message -----
    From: anton huang
    To: aroid-l@gizmoworks.com
    Sent: Tuesday, October 16, 2007 6:31 AM
    Subject: [Aroid-l] xanthosoma?

    >>Dear all,
    anyone can ID this xanthosoma?
    i took the pictures from the nursery of cibodas botanical garden.

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