Aroids (the family Araceae)

[fredg]

That's as yellow as mine gets Lesley.
They get to about 20cms.
Great to get 5 in a 4" square pot

[bulborum]

How yellow is yellow
this is mine yesterday

Roland

Arisaema flavum

[Pascal B]

How yellow is yellow

This would be a good yellow Roland, a Chris Chadwell collection from Pakistan, it is also one of the forms that produces nectar which is held in the spathe tube, quite unusual for Arisaema but Arisaema flavum is an odd one in the genus anyway generally regarded as one of the oldest and most primitive species. In general the Chinese forms tend to go more towards green, the Tibetan form and the Yemen form are a clear yellow. The one from Fred reminds me of a Chen Yi import under the number A-55, do you know the origin Fred?

[bulborum]

Really a beauty Pascal
best yellow I have ever seen
do you have later spare seeds
I never bought this one from Chen Yi

Roland

[manicbotanic]

sauromatum venosum flowering in my garden.
they flower most years..horrid smell though..

[Lesley Cox]

That's a great colour Roland. I can't say mine is as yellow as THAT and my little one is more the shape of Fred's, but the taller spath is more upright. Obvioulsy there's a lot of variation in this species. I'm sorry I haven't taken pictures of either plant yet, though I've had them longer than any other species except candidissimum.

[Pascal B]

Roland, I will try to make pictures of the Tibetan and Yemen form, the colour of both is almost as good but the shape is different, the Tibetan form has a long spathe blade that points forward, like a roof. It is also much bigger about 1 m or more tall with currently 3 leaves for the flowering plants. Because of its wide distribution it is inevitable flavum is variable, it occurs from W China along the Himalayas all the way to Yemen, Saudi Arabia and Ethiopia. Some forms have erect fruits, some have recurved. Some produce nectar, some don't. Usually I take off the seedheads of my Arisaema to avoid hybrids but I will try to self-pollinate the Chadwell collection this year. But all forms have their charm, the greener small ones certainly too.

[bulborum]

Lesley

it was the plant from Pascal
but it is the best I have ever seen

Roland

[fredg]

Now that's yellow Pascal.

Mine was an ebay buy.... paid about £3 last year and have about 18 plants now

[Paul T]

That is an impressive yellow.  I was so disappointed with the pathetic flowers and greeny yellow on mine that I have I think killed it off over the years.  I'd imagine there are a couple still out there somewhere in the garden though, although they no longer flower if they do.  If it had proper yellow flowers I would definitely have kept it.  Excellent to see that there actually ARE good yellows out there.  Many of the ones we have in Aus are the ssp abbreviatum too though, so they're smaller and more pathetic than the other forms.  I've only ever seen the species here in my garden, so only have the smaller form to go by. 

[TheOnionMan]

Pascal, an amazing yellow color!

Last year I had good germination on Arisaema yunnanense, from Lijang, China, Pilous seed.  I planted them out and they remained in growth up until late summer.  Have been waiting for any signs of life this spring, and finally a few have showed up; I upload a photo showing one tiny little cluster of seedlings.  The description said "open places, pale yellow".  Does anyone have a photo of this species they can post, or have any cultural advice regarding this species.  I heard it comes from sunny drier spots, much like A. flavum.

[TheOnionMan]

This is to follow up on a thread I started about finally getting seed on Arisaema heterophyllum (a giant 6' or 2 meter tall form); I showed a photo taken last winter where I chopped the very slow-to-ripen seed head out of ice and snow, then thawed and sowed the seed, overwintering the pot indoors on a windowsill.  I'm pleased that I had 10 seedlings appear, probably need to set them out someplace soon.
http://www.srgc.org.uk/smf/index.php?topic=4813.0

[bulborum]

Wow Fred

This is money investment
in one year from £3 to £104
1700% profit
best investment of this year

Roland

[Gunilla]

Arisaema ciliatum var. liubaense in flower now. It has grown really tall this year.  Some of the leaves are striped just like the spathe.

Arisaema ciliatum var. liubaense

[bulborum]

Yes Gunilla

This is still a wow plant

spectacular

Roland