IAS Aroid Quasi Forum

About Aroid-L
 This is a continuously updated archive of the Aroid-L mailing list in a forum format - not an actual Forum. If you want to post, you will still need to register for the Aroid-L mailing list and send your postings by e-mail for moderation in the normal way.

  Re: aglaonemas
From: "Clarence Hammer" chammer at cfl.rr.com> on 2001.10.28 at 03:52:16(7695)
Hello George and all,

The 'hybrid swarm' I mentioned is documented in the 'Aglaonema Grower's
Notebook' by Roy Jervis, originally published 1978, my copy is 1980. It
concerns Aglaonema commutatum Schott. I will quote, but will have to do
some mild editing of references to pictures and drawings.

" Luzon's Aglaonema commutatum. Ever since Schott described Aglaonema
commutatum, this variable plant has been a popular house plant, not the
plant of the original description, but in many related variants.
Variegations making this plant so appealing are numerous and have induced
botanists to describe some of
them as new species. So we had A. elegans of Engler, A. marantifolium var.
maculatum of Hooker f., and
A. 'Treubii' as examples of the Aglaonema from Luzon. Nicholson simplified
the handling of the group by
delineating Schotts' plant as A. commutatum var. commutatum, making the
plant of Hooker into var. maculatum, and convincingly proving that A. cv.
'Treubii' could not possibly be the A. treubii that Engler described in 1898
and then emended (verbatim sp.) so that it cannot be identified."

"Another confusing element is the solid green plant with absolutely no
variegation that occasionally pops up as A. cuscuaria, which is a trade name
also used for the original spotted A. commutatum.''

''Often amid confusion, a chance happening can bring order out of chaos.
This apparently happened in March, 1980, when (Dr.) Frank Brown was guided
to a remote mountain side in Rizal province in the Philippines to see some
Aglaonema that had been found by chance a short time earlier. While the
results may not have eliminated the chaos, at least the chaos has an
explanation. .....Some of the variants that were part of this stand of
Aglaonemas came, not from a few plants, but each represents a pattern
consistent to an individual plant -- dozens of new 'species for the naming'!
One...duplicates the new cultivar 'Alumina'."

"Many of these Rizal leaf-forms have appeared in cultivars, but this is the
first instance I know of where they have been collected together in the
wild. The isolated locale of this stand of Aglaonemas tends to rule out
'escape from cultivation' as an explanation for their occurrence. At least
several hundred plants have been
removed from this locale since Dr. Brown and his companions first visited
the spot. Local nurserymen heard
about the find and, until the rainy season stopped their visits, they
collected large numbers for shipment to
Bankok and Singapore. The plants appear to be a giant 'hybrid swarm', not
just a few plants from a chance
cross, but from a more complex parentage and background."

"The species seems to be in the flux of development, probably from natural
hybridization involving A. crispum
(Pitcher & Manda) Nicholson, A. philippinense Engler, and A. simplex Blume.
...The more complicated

Note: this is a very old post, so no reply function is available.