Scottish Rock Garden Club Forum

General Subjects => General Forum => Topic started by: TC on July 16, 2024, 02:11:15 PM

Title: identification
Post by: TC on July 16, 2024, 02:11:15 PM
I noticed this Arum flowering among a large clump of Arums with white flowers and marbled leaves.  The one in the picture is smaller and the leaves are just green.  It has also flowered some weeks later.  I grew my Arums from seed and they have been in at least 10 years.  Is this one a hybrid or a rogue seed that got sown with the originals?
Title: Re: identification
Post by: arisaema on July 16, 2024, 03:29:55 PM
That's Arisaema candidissimum, maybe a rogue seed or bulblet that reached maturity?
Title: Re: identification
Post by: Véronique Macrelle on July 16, 2024, 05:46:04 PM
incredible to obtain this species by a rogue sowing!!! ;D
it is beautiful.
Title: Re: identification
Post by: TC on July 16, 2024, 07:36:36 PM
Thank you for the I.D.  It is growing next to a large clump of Arum  italicum Pictum.  All the arum seeds were from the seed exchange and sown at the same time about 10 years ago. The arums flowered after a few years and are increasing., there must have been an arisaema seed among among the arums and that is why I thought it was a "hybrid" or rogue seed.  Since I posted my request, I noticed that another flower is growing.
Title: Re: identification
Post by: ashley on July 27, 2024, 05:10:14 PM
I hope Tom doesn't mind if I piggy-back here.

Can anyone please identify this monocot with pleated leaves & orange roots?
Title: Re: identification
Post by: fermi de Sousa on July 28, 2024, 01:27:01 AM
Possibly a Cypella or whatever genus it's in now,
cheers
fermi
Title: Re: identification
Post by: ashley on July 28, 2024, 12:39:35 PM
Thanks for the lead Fermi.
It'll be interested to see what it turns out to be.

This spring a volunteer tropaeolum appeared in recycled potting mix which turned out to be T. argentinum.
I've never grown this or knowingly had seed, so its origin is a complete mystery.



Title: Re: identification
Post by: ashley on July 28, 2024, 12:49:03 PM
Possibly a Cypella or whatever genus it's in now

Cypella aquatilis looks like a possibility.  Time will tell.
Title: Re: identification
Post by: Véronique Macrelle on July 29, 2024, 05:38:30 AM
Tropaeolum argentinum is a really nice surprise for a ‘guest plant’! It's very pretty. Do you know if it's a perennial or an annual?

Could it be a seed that came from the compost when you bought it?
Title: Re: identification
Post by: ashley on July 29, 2024, 11:25:56 AM
No Véronique, I don't know whether it's perennial, but recently moved it to a deep pot in case it wants to produce tubers.  The plant is vigorous so although it's just begun flowering I should get plenty of seed.

My potting mix is home-made (garden topsoil, leaf mould, grit, sharp sand) but I recycle it almost endlessly.  The only possible source that I can think of is seed received as T. azureum from seed exchanges 2-3 times over the years that unfortunately I had no success with.  So presumably this is a late germination (after 3 years or more), but welcome ☺️



Title: Re: identification
Post by: Jon Evans on July 29, 2024, 02:48:13 PM
Ashley
Make sure you get any seed you can - I only grew it once and mine was definitely annual, but I didn't manage to get any ripe seed.
Title: Re: identification
Post by: ashley on July 29, 2024, 04:19:05 PM
Thanks Jon.  I'll try to get some back to the exchange.
Title: Re: identification
Post by: Véronique Macrelle on July 30, 2024, 05:42:05 AM
I can't get my Tropaeolum perennials to germinate either, but as I also recycle my compost ... one day I might have a nice surprise like this?
 Already this year, I've got 3 Arisaema that germinated like this  :). It's not difficult to identify them as a genus or family, but for others it's sometimes more difficult.

I like surprise plants like that! There's some suspense... Did you quickly work out that it was in the Tropaeolum genus?
Title: Re: identification
Post by: ashley on July 30, 2024, 02:44:49 PM
Yes I agree Véronique; surprises or mysteries like this can be fun.

For my few perennial tropaeolums where germination may be unreliable, I root a few small tip-cuttings in water at the end of each season as a back-up.
Yes this one was recognizably of that genus, but new to me, very soon after it germinated.

Here's another surprise plant that germinated beside a little citrus plant from a local supermarket, but probably originating from a Dutch nursery.
Initially I thought it might be Saxifraga stolonifera, but clearly it's not.  Any suggestions?

[attachimg=1]
Title: Re: identification
Post by: Véronique Macrelle on July 30, 2024, 04:05:32 PM
it could be Viola variegata, (often called Viola koreana ou grypoceras var exilis)
Title: Re: identification
Post by: ashley on July 30, 2024, 04:14:56 PM
That does look like it Véronique.  Thank you 🙂
I'll try keying it out when it gets bigger.

Meanwhile, there's a very useful discussion on nomenclature (& confusion!) of these plants (https://www.nargs.org/viola-species-confusing-latin-names) on the NARGS forum.
Title: Re: identification
Post by: Véronique Macrelle on July 30, 2024, 05:06:26 PM
This is another pretty surprise plant
It will no doubt soon produce a few seed pods from cleistogamous flowers. If you want to sow them, you need to pick the pods as soon as they are upright, otherwise they will explode shortly afterwards.
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