Scottish Rock Garden Club Forum

Bulbs => Bulbs General => Topic started by: fermi de Sousa on March 18, 2018, 12:31:05 PM

Title: Aroids (the family Araceae) 2018
Post by: fermi de Sousa on March 18, 2018, 12:31:05 PM
A group of cowled figures came to grief while attempting to cross a ravine!
#gnomesintrouble!
cheers
fermi
Title: Re: Aroids (the family Araceae) 2018
Post by: fermi de Sousa on March 18, 2018, 01:32:59 PM
A rescue effort has managed to bring several Biarum davisii tubers to the surface
cheers
fermi
Title: Re: Aroids (the family Araceae) 2018
Post by: Gail on March 18, 2018, 04:47:50 PM
Raised a smile - thanks Fermi!  :)
Title: Re: Aroids (the family Araceae) 2018
Post by: François Lambert on April 25, 2018, 11:59:36 AM
A very nice clump of Arum Maculatum growing under one of the pollarded willows.  I only noticed these this year because the area has been cleared of old vegetation when I was cutting teh wood of the willow.  Normally the spot is overgrown with nettles.
Title: Re: Aroids (the family Araceae) 2018
Post by: Bart on May 23, 2018, 03:13:49 PM
All A. maculatum seem to have suffered this year with the climatic conditions in my part of North Yorkshire, quite harsh cold/northerly wind/dry/high uv. This Arum italicum (I think) looked great though today, full open, unlike any of my A. maculatum :

[attachimg=1]
Title: Re: Aroids (the family Araceae) 2018
Post by: Mariette on June 05, 2018, 10:03:43 PM
The slugs were swifter than me to discover the first flower of this arum. The seed came from Turkey 11 years ago, labeled Arum species. Now that it flowers I think it´s Arum dioscoridis.
Title: Re: Aroids (the family Araceae) 2018
Post by: Jupiter on June 06, 2018, 10:35:20 AM
Fermi I believe your pictures show Biarum marmariense. I had it labelled as davisii too but I am now fairly sure it isn't. Is that crack in the soil just from drought shrinking your clay subsoil?  :o
Title: Re: Aroids (the family Araceae) 2018
Post by: Bart on June 07, 2018, 06:30:21 PM
The slugs were swifter than me to discover the first flower of this arum. The seed came from Turkey 11 years ago, labeled Arum species. Now that it flowers I think it´s Arum dioscoridis.

Mariette, I think you are right. There are a few forms on the market; spectabile, liepoldtii and syriacum. I do not know if those names are official subspecies or just horticultural variations.  From your picture it looks like liepoldtii. I grow it in a pot this year and it has developed 2 flower scapes on one stem, a bit odd. I will post a picture when it opens in a few days, if it does at all. Many of my Arums have trouble opening fully, or at all, this year and I have no idea why. Some are very nice, like the A. dioscoridis (syriacum). This is a full month later than in London, where I saw it flower on  May 5th in chelsea Phisic Garden.


[attachimg=1]

[attachimg=2]

Title: Re: Aroids (the family Araceae) 2018
Post by: Mariette on June 07, 2018, 10:15:59 PM
Thank You for Your information, Bart! The seedlings were kept for many years in deep pots in my frost-free greenhouse where they grew very well but refused to flower. Rather in despair I planted them out in places where they might survive. In this case it obviously worked well.
Title: Re: Aroids (the family Araceae) 2018
Post by: fermi de Sousa on June 09, 2018, 10:13:50 AM
Fermi I believe your pictures show Biarum marmariense. I had it labelled as davisii too but I am now fairly sure it isn't. Is that crack in the soil just from drought shrinking your clay subsoil?  :o
Hi Jamus,
Sorry I thought that I'd responded already but my reply seems to have vanished into the ether.
I had suspected that this is B.marmariense but as it came from Otto I was hesitant to question it!
The soil had been cracking quite badly during the summer here - the soil is quite reactive and the movement plays havoc with rock walls especially!
cheers
fermi
Title: Re: Aroids (the family Araceae) 2018
Post by: Graham Catlow on June 12, 2018, 09:10:56 PM
To my surprise and extreme delight this Arisaema flavum has appeared.
Three years ago when we moved from Edinburgh I must have put it in this pot and don't remember seeing it since. I think I may have emptied the pot a couple of times and seen the small bulb but had no idea what it was so just put it back.
Its seems it the only Arisaema that survived the move. I lost elephas,consanguinium, and griffithii.

[attachimg=1]
Title: Re: Aroids (the family Araceae) 2018
Post by: ruweiss on June 12, 2018, 09:46:46 PM
The cultivation of A.fargesii and A.candidissimum in big pots is quite easy
and rewarding for me. I love the tropical display of the huge leaves, the flowers are an extra bonus.
Title: Re: Aroids (the family Araceae) 2018
Post by: ArnoldT on June 13, 2018, 12:19:08 AM
Rudi:

I think you solved the problem I have with A. candidissimum always flowering and facing the wrong direction.

Just turn the pot!
Title: Re: Aroids (the family Araceae) 2018
Post by: Bart on June 13, 2018, 09:19:29 AM
The Arum dioscoridis liepoldtii is now flowering:

[attachimg=1]

It wasn't a double flower after all, what looked like a second flower was just an empty sheath, I'm sure it will have a proper name..

In the garden a clump of Arisaema ciliatum var. liubaense is looking nice:

[attachimg=2]

And to my surprise a Typhonium venosum (syn. Sauromatum venosum) is about to open I have never grown it in the open garden, this must have been planted with a pot of snowdrops from the greenhouse some time ago.

[attachimg=3]

On the subject of flowers always facing the wrong way, I think Arums are undoubtedly the best at that.

Title: Re: Aroids (the family Araceae) 2018
Post by: Mariette on June 13, 2018, 09:42:41 PM
The spathe of Your Arum dioscoridis  is impressingly dark-coloured, Bart. Mine is probably less so, but I will have to wait for another flowering season to be sure.

Typhonium syn. Sauromatum venosum is known to grow and self-seed in gardens in the milder parts of Germany. It has even been found growing wild on the fringe of an urban wood.
Title: Re: Aroids (the family Araceae) 2018
Post by: Bart on June 15, 2018, 12:03:02 PM
Arum dioscoridis leopoldtii in the garden. The second flower opened yesterday when there was a strong desiccating gale blowing and the flower lasted only a few hours until it shrivelled.

[attachimg=1]

Sauromatum venosum waited sensibly until this morning to open, contesting the smell of A. dioscoridis...

[attachimg=2]

[attachimg=3]

The older flower of A. dioscoridis syriacum:

[attachimg=4]

Does anyone know about the status of the names A. dioscoridis liepoldtii, syriacum and spectabile? Are they var. or subspecies or just horticultural variations?


To Maggi: Thank you for flipping the pictures when needed. I would gladly do it myself, but haven't found instruction anywhere how to. Could you perhaps point me in the right direction?

(I have more picture viewing questions, but will not post them here!)





Title: Re: Aroids (the family Araceae) 2018
Post by: François Lambert on June 15, 2018, 12:11:23 PM
Quite early in the season a first flower of Zantedeschia Pentlandii.  I love that deep yellow colour of the flowers.
Title: Re: Aroids (the family Araceae) 2018
Post by: Maggi Young on June 15, 2018, 12:37:34 PM
Quote
  To Maggi: Thank you for flipping the pictures when needed. I would gladly do it myself, but haven't found instruction anywhere how to. Could you perhaps point me in the right direction?

(I have more picture viewing questions, but will not post them here!)

 Do not rotate the photos when moving them from the camera  - some  programmes retain the original format  so when the pix are posted here they return to their original orientation.


See here : http://www.srgc.net/forum/index.php?topic=65.msg370435#msg370435 (http://www.srgc.net/forum/index.php?topic=65.msg370435#msg370435)
Title: Re: Aroids (the family Araceae) 2018
Post by: Bart on June 15, 2018, 12:56:16 PM
Thaks Maggie, will stop flipping.
Title: Re: Aroids (the family Araceae) 2018
Post by: Gabriela on June 20, 2018, 01:15:37 AM
My first Arisaema candidissimum flowering (four years from seeds). Like mentioned before, growing Arisaema in pots solves the problem of wrong facing flowers :)
[attachimg=1]

And a pic preview of A. fargesii of the same age. Very satisfying to see them flowering.
[attachimg=2]
Title: Re: Aroids (the family Araceae) 2018
Post by: François Lambert on June 21, 2018, 12:11:38 PM
About 6 year after sowing my first flower of Zantedeschia Rehmannii.  Took so long because I didn't give the plants the right amount of space they need to develop larger corms, until 2 year ago they were still growing overcrowded in the pot in which I had sown them.

[attachimg=1]
Title: Re: Aroids (the family Araceae) 2018
Post by: Bart on June 21, 2018, 08:54:37 PM
Nice rehmannii, Francois. I bought a yellow hybrid some years ago and it keeps reappearing every year around now so they seem pretty hardy in our English climate. And Gabriela, your pics of A. candidissimum and A. fargesii are really nice!
I have an Arisaema in flower, grown from seedex 2013 marked as A. amurense, but it is clearly not.

[attachimg=1]

It looks to me like A. heterophyllum. I grew A. draconitum until I lost the lot last year and from memory, they were greener and taller, and narrower. But maybe someone out there can help out?
Title: Re: Aroids (the family Araceae) 2018
Post by: Gabriela on June 22, 2018, 01:20:51 AM
The Zantedeschia has an extremely elegant flower.

Your Arisaema looks more like A. tortuosum Bart, heterophyllum has a more pronounced horse shoe shape leaf disposition, the spathe tube longer and the spadix with a different orientation. Here's a photo with my heterophyllum from a couple of years ago, this year it didn't flower but it's a miracle being alive, last fall I found the tuber partially rotten.
[attachimg=1]
Title: Re: Aroids (the family Araceae) 2018
Post by: Mariette on July 20, 2018, 09:36:50 PM
Mixed colours of Arum italicum-fruits.

(https://up.picr.de/33285290iv.jpg)
Title: Re: Aroids (the family Araceae) 2018
Post by: Mariette on July 20, 2018, 09:39:49 PM
Arum maculatum ´Bacovci´has variegated leaves
Title: Re: Aroids (the family Araceae) 2018
Post by: Mariette on July 20, 2018, 10:25:16 PM
and variegated spathas, too.
Title: Re: Aroids (the family Araceae) 2018
Post by: Mariette on July 20, 2018, 10:27:21 PM
This selection of Arum maculatum shows always yellow fruits.
Title: Re: Aroids (the family Araceae) 2018
Post by: fermi de Sousa on August 16, 2018, 12:21:58 PM
Arisarum proboscideum, the "mouse plant" may be weedy but those mouse-tails always make me smile :D
cheers
fermi
Title: Re: Aroids (the family Araceae) 2018
Post by: sokol on August 24, 2018, 07:30:20 AM
It was a very good season for Biarum here, the best I have ever had.

It started at the beginning of June with one collected at the Langada gorge, Taygetos. They are completely planted out.

[attachimg=1]

[attachimg=2]

Another collection from Western Peloponnese, following the traces of wild pigs and what they had left in 2010 is probably the same species. Biarum is probably not tasty for them.

[attachimg=3]

[attachimg=4]

[attachimg=5]

I have called them Biarum spruneri but learnt that Biaum rhopalospadix is the correct name.



Title: Re: Aroids (the family Araceae) 2018
Post by: sokol on August 24, 2018, 07:34:44 AM
Another one flowered in June, that I have got as Biarum bovei but that is probably wrong.

[attachimg=1]

Biarum carratracense ist the blackest Biarum I have. It has flowered middle of June too.

[attachimg=2]

[attachimg=3]

[attachimg=4]
Title: Re: Aroids (the family Araceae) 2018
Post by: sokol on August 24, 2018, 07:41:29 AM
Next flowers end of July from the same collection at Western Peloponnese. All of them had a green spadix now, maybe Biarum tenuifolium subsp. abbreviatum.

[attachimg=1]

Then Biarum tenuifolium followed,

from Mt. Etna, Sicily, completely planted out:

[attachimg=2]

and from Basilicata, Italy also planted out.

[attachimg=3]

Title: Re: Aroids (the family Araceae) 2018
Post by: sokol on August 24, 2018, 07:47:56 AM
The last till now is Biarum ohridense that I have got last year.

Quite unusual to all the others it took three days to fully open and I first thought this is an open flower:

[attachimg=1]

But suddenly it really opened:

[attachimg=2]

[attachimg=3]

[attachimg=4]

Maybe it doesn't attract pollinators so well as there is no ugly smell. Normally I smell within 10 meters when a Biarum flower has frehly opened.
Title: Re: Aroids (the family Araceae) 2018
Post by: Bart on August 24, 2018, 08:31:42 AM
That is an impressive range of Biarum, Stephan.Very nice. Could you perhaps show an overview picture of where you have planted them? If I understand correctly they are out in the the garden ? I haven’t had much luck with them in pots so far, it would be nice if they survive in a gravel bed or so.
Title: Re: Aroids (the family Araceae) 2018
Post by: sokol on August 24, 2018, 10:24:07 AM
First I grow all Biarum in pots. They do very well here, in clay pots, plunged in a protected sand bed. When I have too much I put them outside and I added this, when the shown plants are from outside.

Attached one example how many bulbs I had from less than 10 collected bulbs after 6 years.

Pictures of the place will follow.

Title: Re: Aroids (the family Araceae) 2018
Post by: sokol on August 24, 2018, 08:44:02 PM
Here are the places where I grow my Biarum.

First Biarum tenuifolium from Etna, growing at the bottom of the picture:

[attachimg=1]

Biarum tenuifolium idomenaeum below the peach tree close to the house is just behind the pine tree shown before.

[attachimg=2]

[attachimg=3]

Biarum "spruneri" grows further off the house but protected from our sometimes very cold east winds in winter. Arum pictum plant is the next to the right but still dormant.

[attachimg=4]

The rest is protected in the bulb frame when necessary. It is the hottest place in the afternoon that seems to be very good for Biarum. Some are planted out behind it, below the thuja.

[attachimg=5]



Title: Re: Aroids (the family Araceae) 2018
Post by: Maggi Young on September 27, 2018, 12:03:29 PM
A new Arisaema species has been described by Pascal Bruggeman and the paper is available by open access on this link :
https://www.ingentaconnect.com/content/nhn/blumea/pre-prints/content-nbc-blumea-0471 (https://www.ingentaconnect.com/content/nhn/blumea/pre-prints/content-nbc-blumea-0471)

Arisaema anatinum Brugg. has officially been published so a new species can be added to the flora of India and Bhutan 
Title: Re: Aroids (the family Araceae) 2018
Post by: Pauli on May 31, 2019, 06:59:04 PM
May ist rather early fro an autumn bloomer, isn`t it?
But we experienced a warm and dry April followed by a wet and cold May; that may have confused it-
Title: Re: Aroids (the family Araceae) 2018
Post by: Mariette on June 20, 2019, 03:31:35 PM
This year I was swifter than the slugs: Arum dioscoridis undamaged and with pollinators collecting.
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