delosperma & aizoaceae

[Great Moravian]

I don't have anything that could possibly be Gold Nugget, but I do have this other yellow flowering tufted species from Lesotho which has a single flush of flowers in spring.  This is sometimes sold as D. congestum, although it isn't that species.

iann,

Charming and not the variant in which I counted locules. Possibly you can count the locules or stigmas.

[iann]

The flowers are a fairly standard five-locular design.  You can see them better in this closeup.  The capsules are somewhat strange, almost as if they tried to double up the locules and very nearly made it.

[Great Moravian]

The flowers are a fairly standard five-locular design.  You can see them better in this closeup.  The capsules are somewhat strange, almost as if they tried to double up the locules and very nearly made it.

Yes. Locules are divided by false septa. A comparison with a Stomatium fruit might be interesting.
The latter is unknown to me of course.

[Great Moravian]

The nectary of 'White Nugget' is as a lophomorphic ring. It is certainly a hybrid between Delosperma basuticum Hort. non L. Bolus, in which the nectary is 5 separate glands of Delosperma shape, and a Nananthus species as I guessed.
Delosperma basuticum Hort. non L. Bolus is not a genuine Delosperma. Corpuscularia, Rhinophyllum and Stomatium should be considered.

[Great Moravian]

Journal Bradleya is not available to me. I wonder which are the differences between Delosperma deilanthoides and Delosperma deleeuwiae. The latter is in principle similar to an acaulescent Delosperma ashtonii. The plants cultivated as Delosperma deleeuwiae belong of course to a completely different species.
The holotype of Delosperma deilanthoides is not contained in Aluka and the images are not of sufficient informative value for any conclusions.

[iann]

Stomatium capsule.  I believe these are false septa forming chambers at the bottom of the capsule that retain some seeds for longer.  Sometimes they are not always obvious (second picture), but can be scraped out to leave a fairly standard five-locular capsule (third picture).

[Great Moravian]

Stomatium capsule.  I believe these are false septa forming chambers at the bottom of the capsule that retain some seeds for longer.  Sometimes they are not always obvious (second picture), but can be scraped out to leave a fairly standard five-locular capsule (third picture).

Thank you. In my opinion, the placenta is not so elevated that it could be called a false septum.

[Great Moravian]

Christoph Schröder in Avonia-News 04: 2008 claimed that 'Beaufort West' might be Delosperma luckhoffii L.BOLUS if it flowered earlier.
Der Beschreibung und Zeichnung entsprechen
heute oft unter dem Namen Delosperma
spec. Beaufort West gehandelte
Pflanzen nahezu perfekt, von einem Punkt
abgesehen: der sommerlichen Blüte (Südhalbkugel!).
Delosperma spec. Beaufort
West blüht in Europa mit der Hauptblüte von
April bis Mai, gefolgt von einer schwächeren
zweiten Blühperiode, mit oft nur vereinzelten
Blüten im September und Oktober.
L. Bolus really claimed Fl. per aestatem., but the image with flowers was drawn in November 1926, which corresponds to May in the northern hemisphere. Hence there is no contradiction, L. Bolus wanted to say it doesn't flower in winter.
I checked the receptaculum shape in 'Beaufort West' yesterday. It precisely corresponds to the section visualized in the central image, whereas the space between the elevated centre and the glands is depicted too broad in the left image.

[Great Moravian]

A white-flowered Delosperma flowering now and strongly resembling the images denoted Delosperma karrooicum has bladder cells elongated in hairs and sturdy woody branches. Petals are suffused purple on reverse. Nevertheless, according to Luckhoff, the collector, Delosperma karrooicum should be a low growing soft-stemmed mesemb with runners that root, its flowers should be white, rose tips, and likes leaf mould, cool shady position and moisture. Furthermore, the sheet BOL131318 contains specimens resembling Delosperma luckhoffii and transitional specimens too. I wonder whether plants cultivated by you are soft-stemmed or sturdy-stemmed.

[Jean-Patrick AGIER]

Hi,
Here's a pic of my Delosperma Congestum. But I would like to know what are the differences between D Congestum & D Basuticum. They seem very close for my non specialist eyes. As for D Nubigenum & D Lineare: are they two
J-P
 different species?

[Great Moravian]

Hi,
Here's a pic of my Delosperma Congestum. But I would like to know what are the differences between D Congestum & D Basuticum. They seem very close for my non specialist eyes. As for D Nubigenum & D Lineare: are they two
J-P
 different species?

Try to understand what was written previously in the thread. Delosperma basuticum and Delosperma congestum are two completely different species, neither yellow-flowered. The plant you cultivate is neither Delosperma basuticum, nor Delosperma congestum, but a scientifically non-described species. There exist several introductions of the species, 5 different of known origin in my possession. The variants undoubtedly represent one species. It has little sense to distinguish the variants because of crossing. Furthermore, Delosperma nubigena, not Delosperma nubigenum, is the trailing yellow-flowered fertile plant, the common sterile variant of which is sometimes called Delosperma deschampsii Hort. Whether the latter is a cultivar of Delosperma nubigena or a hybrid of it is in stars. Delosperma lineare is a white-flowered upright plant seldom in cultivation. The names are applied arbitrarily and casually to Delosperma species in horticulture.

1. Plant caespitose, tufted upright rosettes. Leaves connate to sheaths fully covering internodia which are invisible, carinate and ciliate on margins and keels
                                                                                                        Hardy Yellow Iceplant = noname Delosperma sp.
False identifications by Panayoti Kelaidis are Delosperma basuticum and Delosperma congestum. Several introductions are in cultivation, the differences are at cultivar level.

2. Plant trailing. Leaves not connate, not ciliate, hardly carinate, internodia visible
         2a. Fertile                                                                                   Trailing Yellow Iceplant = Delosperma nubigena
         2b. Sterile                                                                                  Old Yellow Iceplant = Delosperma 'Deschampsii'
False identifications are Delosperma brunnthaleri 'Yellow' and Delosperma lineare.

[Great Moravian]

The plant in the picture bellow might represent Delosperma basuticum. Dense mat, leaves 15 mm, bracts at flowering 5 mm, pink-purple flowers, collected in northern Lesotho at altitude 3000 m. Cultivated and photographed by Marek Chaloupka.
Lavis wrote on the sheet BOL135376 of Delosperma alticola a notice saying seems to be near D. basuticum.

[iann]

I'm pretty sure I've never seen either D. congestum or D. basuticum.  I don't think anyone anywhere has D. congestum, just somebody decided to slap the name on this plant.  Wasn't it Kelaidis and then the name stuck even when he said it wasn't D. congestum at all?

Your plant looks like the tufted Lesotho plant.  I find it quite thirsty, but very showy in spring.  Only one set of flowers each year though.  Very hardy but the thick roots rotted when I tried it in the ground here.  I need more careful preparation

[TheOnionMan]

I'm late to this thread but must go through and read it in detail.  Thought I'd jump in and show a couple photos of a new Delosperma species... it has a tentative name, but until it is published and introduced I'll just call it Delosperma sp.  Panayoti Kelaidis gave me permission to post a couple of his photos, so here they are (you may need sunglasses ).  I'm trialing the plant here in northern New England, can't wait to see some of those brilliant silky flowers.

[iann]

Very showy!  I could hazard a guess what one of the parents might be, and I have an idea what the other might be too.  I guess all will be revealed in due course