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--- On Thu, 6/12/08, Peter Boyce wrote:
> From: Peter Boyce
> Subject: Re: [Aroid-l] Schismatoglottis species
> To: "Discussion of aroids"
> Date: Thursday, June 12, 2008, 1:24 PM
> Dear Leyland,
>
> Sorry for the delay (again!) been a bit tied up with
> various non-gustatatory (but no less enjoyable)
> things here; mainly tryng to keep up with numerous
> flowerings in the
> research collection (which has just passed 2500 accessions)
> and the start of
> the repotting season (the 2500 accessions are each a
> minimum of 5
> plants...).
>
> Schismatoglottis is, after Homalomena, the most speciose
> genus here in
> tropical Asia; in Sarawak alone there are at least 100
> species with
> somewhere over 50% yet to be given a scientific name. At
> the moment there
> are only a few species in cultivation outside specialist
> and botanical
> garden collections; many of those (and there are not many)
> on the web away
> from the IAS site are misnamed.
> Before I left MT late last year I was very actively
> involved with
> introducing Schsmats into tc for assessment as
> horticultural subjects. The
> results of some of these are now just finding their way
> onto the market and
> will be, all being well, available in the not too distant
> future.
>
> We are now working on the systematics and evolution of the
> genus and some of
> the related satellites and have as a result an extensive
> collection of ca.
> 60+ spp.; most of these are attractive, some are
> outstandingly so.
>
> In terms of growth habit Schismatoglottis fall into two
> broad groups. There are species with a creeping underground
> rhizome-like stem and form dense to somewhat diffuse
> colonies.
> This group includes the very variable (as currently
> defined) S. calyptrata, S. motleyana, S. wongii, S.
> wallichi. These species tend to have leaf laminae with
> cordate to rounded bases and often very attractive
> variagation. The primary disadvantage of these colonial
> species is that they are difficult to maintain in small
> pots as after flowering each shoot dies and is replecd by
> one or usually more shoots from near the base of the
> rhizome and this , combined with the long distance that he
> rhizomes spread mean that most of the ?alyptrata
> group'need at least a cut-down 30 gallon trashcan to
> enable them to form multiple shoots. The best way of
> growing them in in raised beds or, if the climate allows,
> but are much better in open ground under medium shade.
>
> The species forming tufts with a single or a few upright
> stems are probably, as ornamenals, the most important group
> in that they grown somewhat in the manner of Alocasia and
> are thus much moe easily managed in small to medium pots.
> This group actually contains several taxonomic units,
> including the 'asperata group', the 'multiflora
> group', 'rupestris group', etc. Many are
> outstanding onamentals although at the moment there are
> very few in cultivaion.
>
> If I were asked to select a few for their outstanding
> leaves I would go for:
>
> S. asperata (esp, the forms with the backs of the leaf and
> petiole deep red
> and the upper leaf surface deep green with three shades of
> green and silver
> variegaion)
>
> S. motleyana or S. wongii in the three or four colour
> variegation forms.
>
> S. colocasioides with its plum-purple warty petioles and
> grey on green
> banded leaves.
>
> S. trivitatta, especially forms with longitudinal ragged
> zones of silver and
> a silver mid-rib.
>
> S. gamoandra with rosettes off stiff pewter and steel
> banded leaves with raised checker-board venation.
>
> S. acuminatissima 'Lavallei' with upright stems and
> leaves deep plum-purple beneath and deep geen with grey and
> two shades of green above. This is in trade as Homalomena
> 'Purple Sword'
>
> and... if space allows, S. cornei, a a species with
> succulent grey-green leaves that can reach over 3 m tall
> and produces clusters on inflorescences resembling white
> and jave walking sticks...
>
> If this post recives some interest I will post some images
> of these and a few others.
>
>
> Peter
>
>
> ----- Original Message -----
> From: "brian lee"
> To: "Discussion of aroids"
>
> Sent: Tuesday, June 10, 2008 2:50 AM
> Subject: [Aroid-l] Schismatoglottis species
>
>
> > Dear Peter,
> >
> > Aloha and mahalo for this additional information. I
> can understand the
> > delay... tuak and wild boar...eat and drink until you
> sleep.
> >
> > I love this sort of information, root glues and stem
> disarticulations.
> > This is changing the subject, but, can you start a new
> thread on
> > Schismatoglottis? I do not know much about the species
> listed, but it is
> > long and I have seen only a few in cultivation. Could
> you educate us on
> > the more ornamental species in this genus? At least
> the species you
> > encounter?
> >
> > Aloha,
> >
> > Leland
> >
> >
> > --- On Sun, 6/8/08, Peter Boyce
> wrote:
> >
> >> From: Peter Boyce
> >> Subject: Re: [Aroid-l] an apolgy if it is order
> >> To: "Discussion of aroids"
>
> >> Date: Sunday, June 8, 2008, 9:35 PM
> >> Hi Leyland,
> >>
> >> Sorry for the delay in replying; just been the big
> Gawai
> >> holidays here so a
> >> bit tied up with drinking tuak and eating wild
> boar.
> >>
> >> Root glue occurs in the feeding roots all Asian
> genera (but
> >> not all the
> >> species of each genus) of the Monstereae (e.g.,
> Amydrium,
> >> Rhaphidophora,
> >> Scindapsus & Epipremnum), in Anadendreae
> (Anadendrum
> >> only) and in Pothos and
> >> Pedicellarum of Potheae. It is visible as a cap of
> >> 'gel' on the active root
> >> tip. The most striking 'caps' are found in
> the
> >> Hookeri complex of
> >> Rhaphidophora (R. hookeri, foraminifera, puberula,
> >> todayensis) in which not
> >> only do the active tips of the feeder roots have a
> very
> >> substantial cap but
> >> the climbing roots arise in masses along the stem
> and
> >> produce copious
> >> quantities of gel/slime that not only glues the
> roots to
> >> the climbing
> >> surface but also seems to provide an ideal
> environment for
> >> additional root
> >> development such that pulling one of these from
> the tree
> >> often removes a
> >> fair proportion of the adjacent bark.
> >>
> >> Shoot disarticulation so far is found in the Asian
> >> rheophytic genera. I have
> >> also observed (in cultivation) the same in W
> Africa
> >> rheophytic Anubias but I
> >> have never been to W Africa and so cannot say
> whether other
> >> African
> >> rheophtyes (Nephthytis, some Cercestis) have
> >> disarticulation mechanics.
> >>
> >> Very best
> >>
> >> Pete
> >>
> >> ----- Original Message -----
> >> From: "brian lee"
>
> >> To: "Discussion of aroids"
> >>
> >> Sent: Tuesday, June 03, 2008 5:18 PM
> >> Subject: Re: [Aroid-l] an apolgy if it is order
> >>
> >>
> >> > Dear Peter,
> >> >
> >> > Aloha. Thank you for answering Steve's
> inquiry
> >> with
> >> > this interesting set of observations....do
> you know of
> >> > root glues or stem disarticulations in other
> plant
> >> > genera? What other botanical life history
> secrets can
> >> > you share?
> >> >
> >> > Aloha,
> >> >
> >> > Leland
> >> >
> >> > --- Peter Boyce
> wrote:
> >> >
> >> >> Hi Steve,
> >> >>
> >> >> The root tip thing is very interesting.
> While up
> >> at
> >> >> Batang Ai last week took some time to
> look closely
> >> >> at a very common species of Piptospatha
> and
> >> realized
> >> >> that the active root tip was always
> coated in cap
> >> of
> >> >> viscous gel; looking at root development
> it dawned
> >> >> on me that the gel was acting as an
> adhesive; as
> >> the
> >> >> root progressed across the rock the gel
> cap laid
> >> >> down a thin film, much the same as a slug
> or snail
> >> >> does, and the developing root hairs bound
> into
> >> this,
> >> >> gluing the root to the rock to the extent
> that
> >> >> attempts to remove older portions the
> root
> >> actually
> >> >> removed fragments of the rock (shale).
> >> >>
> >> >> The shoot tip thing is that the active
> shoot is
> >> >> attached to the older part of the stem by
> a line
> >> of
> >> >> weakness that functions as a point of
> potential
> >> >> disarticulation. When the river flow
> becomes to
> >> >> great such that the drag on the leafy
> portion has
> >> >> the potential to dislodge the entire
> plant, the
> >> >> leafy shoot breaks at the point of
> weakness and
> >> thus
> >> >> by sacrificing the active shoot/s the
> plan is able
> >> >> to reduce drag and thus prevent total
> >> dislodgement.
> >> >> The stumps remaining readily re-sprout,
> often
> >> >> forming multi-headed plants. Aside from
> >> 'saving' the
> >> >> mother plant the 'lost' active
> shoot tips
> >> frequently
> >> >> end up in a suitable environment for
> >> >> re-establishment and thus act as
> dispersal units.
> >> >> Another interesting aspect of this
> process is that
> >> >> the disarticulation point 'moves'
> with the
> >> extension
> >> >> of the active shoot and thus only the
> same size
> >> >> piece of active shoot is shed each time.
> >> >>
> >> >> Very best
> >> >>
> >> >> Pete
> >> >> ----- Original Message -----
> >> >> From: ExoticRainforest
> >> >> To: Discussion of aroids
> >> >> Sent: Monday, June 02, 2008 7:19 PM
> >> >> Subject: [Aroid-l] an apolgy if it is
> order
> >> >>
> >> >>
> >> >> Pete, this message from you is more
> valuable
> >> than
> >> >> I can make clear. I have several mentors
> who are
> >> my
> >> >> honest-to-goodness heroes and friends.
> And I hope
> >> >> you know you are one. Tom, Simon,
> Eduardo,
> >> >> Alistair, Julius, Leland and many others,
> a list
> >> too
> >> >> long to mention, help me all the time!
> My goal
> >> has
> >> >> been only to self-educate myself and to
> try to
> >> share
> >> >> what I learn in a way anyone interested
> in aroids
> >> >> can utilize. I am a writer who has been
> putting
> >> >> words on paper for over 30 years. But
> without
> >> >> accurate sources there is nothing to
> write!
> >> >>
> >> >> You have answered my questions many,
> many times
> >> >> and always help to make what I'm
> trying to
> >> >> understand clear. And that is at least
> in part
> >> the
> >> >> reason I quote all of you rather than
> trying to
> >> put
> >> >> what you teach in my own words. As a
> >> non-scientist
> >> >> my words are useless, but your words have
> value!
> >> >>
> >> >> So thanks for your kindness and your
> continued
> >> >> help. With the same thanks to all the
> >> professionals
> >> >> who teach me something new in their
> journals and
> >> >> emails on virtually a daily basis. If I
> could
> >> offer
> >> >> advice to anyone who is interested in
> aroids it
> >> >> would be to build a library of good
> scientific
> >> >> material on the genus. In the beginning
> the
> >> reading
> >> >> is difficult, but I time you will begin
> to
> >> >> understand the scientific terms and all
> those
> >> >> questions become clear answers.
> >> >>
> >> >> Now, a big request! Tell us about
> "the way
> >> roots
> >> >> glue themselves to rocks and how the
> shoot tips of
> >> a
> >> >> rheophytes resist water flow in
> spate." You
> >> just
> >> >> opened up a new file in my brain and I
> want to
> >> know!
> >> >>
> >> >> Steve
> >> >>
> >> >>
> >> >> Steve,
> >> >>
> >> >> I live in a country where we
> constantly
> >> struggle
> >> >> to get our students to read..... believe
> me...you
> >> >> can NEVER read too much. I have worked
> with aroids
> >> >> in one way or another for 30+ years;
> >> professionally
> >> >> for 20+ years... I read about aroids, any
> aroids,
> >> >> every day. And every day I learn
> something
> >> >> new...this week so far I have learned
> something
> >> new
> >> >> about pollination, the way roots glue
> themselves
> >> to
> >> >> rocks and how the shoot tips of a
> rheophytes
> >> resist
> >> >> water flow in spate. Tom, who has just
> tuned 70,
> >> has
> >> >> worked on aroids for over 40 years... he
> reads
> >> every
> >> >> day... Josef has worked on aroids nerly
> 50
> >> years...
> >> >> he reads every day... and I would bet
> that they
> >> too
> >> >> are constantly learning new things.
> >> >>
> >> >>
> >> >>
> >> >>
> >> >
> >>
> ------------------------------------------------------------------------------
> >> >>
> >> >>
> >> >>
> _______________________________________________
> >> >> Aroid-L mailing list
> >> >> Aroid-L at www.gizmoworks.com
> >> >>
> >> http://www.gizmoworks.com/mailman/listinfo/aroid-l
> >> >> >
> >> _______________________________________________
> >> >> Aroid-L mailing list
> >> >> Aroid-L at www.gizmoworks.com
> >> >>
> http://www.gizmoworks.com/mailman/listinfo/aroid-l
> >> >>
> >> >
> >> >
> >> >
> >> >
> >> >
> _______________________________________________
> >> > Aroid-L mailing list
> >> > Aroid-L at www.gizmoworks.com
> >> >
> http://www.gizmoworks.com/mailman/listinfo/aroid-l
> >> >
> >>
> >>
> >>
> >> _______________________________________________
> >> Aroid-L mailing list
> >> Aroid-L at www.gizmoworks.com
> >> http://www.gizmoworks.com/mailman/listinfo/aroid-l
> >
> >
> >
> > _______________________________________________
> > Aroid-L mailing list
> > Aroid-L at www.gizmoworks.com
> > http://www.gizmoworks.com/mailman/listinfo/aroid-l
> >_______________________________________________
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