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Search found 99 matches

by nobby
Fri May 17, 2024 7:03 am
Forum: Small Opuntias (Tephrocactus Study Group)
Topic: First Pterocactus of the year
Replies: 19
Views: 2507

Re: First Pterocactus of the year

Yes Ray, it's true, the flower of P. megliolii is always bright yellow.
Nobby
by nobby
Thu May 16, 2024 8:54 pm
Forum: Small Opuntias (Tephrocactus Study Group)
Topic: First Pterocactus of the year
Replies: 19
Views: 2507

Re: First Pterocactus of the year

Hello Ralph,

Ptero. SAR 821 is a spec. from west of Fiambala. It still has no name. But I'm sure someone will describe it at someday.

Nobby
by nobby
Thu May 16, 2024 5:47 am
Forum: Small Opuntias (Tephrocactus Study Group)
Topic: First Pterocactus of the year
Replies: 19
Views: 2507

Re: First Pterocactus of the year

Ray,

your P. megliolii seems to be a wonderful P. gonjianii.

Nobby
by nobby
Mon Feb 26, 2024 9:47 am
Forum: The Cactus & Succulent Plant Forum
Topic: CactusWorld (Dec 2023) Copiapoa
Replies: 6
Views: 808

Re: CactusWorld (Dec 2023) Copiapoa

Sorry - I have forgotten the picture - Copiapoa calderana var. spinosior Dec. 2023:
C_calderana_spinosior_s.jpg
by nobby
Mon Feb 26, 2024 9:41 am
Forum: The Cactus & Succulent Plant Forum
Topic: CactusWorld (Dec 2023) Copiapoa
Replies: 6
Views: 808

Re: CactusWorld (Dec 2023) Copiapoa

When I read the description of C. saxifraga, I was not sure whether it was the same locality as Ritter's C. calderana var. spinosior. But Roger's comment about the Thelocephalas made me unsure. I know of no better place to find T. krausii than there. But there are several interesting localities for ...
by nobby
Fri Jun 02, 2023 5:46 pm
Forum: The Cactus & Succulent Plant Forum
Topic: Copiapoa coquimbana var. pendulina
Replies: 4
Views: 475

Re: Copiapoa coquimbana var. pendulina

Yes, the range of variation in C. coquimbana forms is quite large. I do not find it easy to identify Copiapoa plants without a label and without concrete information about their origin.
But one thing is pretty certain - they will flower yellow and are all beautiful.
by nobby
Fri Jun 02, 2023 6:07 am
Forum: The Cactus & Succulent Plant Forum
Topic: Copiapoa coquimbana var. pendulina
Replies: 4
Views: 475

Re: Copiapoa coquimbana var. pendulina

Your plant looks unusual for the taxon (spines and epidermis colour). Here is a typical plant south of Fray Jorge NP that we visited last year.
C_pendulina_s.jpg
by nobby
Sun Jun 26, 2022 4:12 pm
Forum: Small Opuntias (Tephrocactus Study Group)
Topic: Pterocactus spec.nova
Replies: 8
Views: 1680

Re: Pterocactus spec.nova

OK! Neither P. araucanus nor P. neuquensis - looks very much like P. valentinii.

Norbert
by nobby
Sun Jun 26, 2022 12:28 pm
Forum: Small Opuntias (Tephrocactus Study Group)
Topic: Pterocactus spec.nova
Replies: 8
Views: 1680

Re: Pterocactus spec.nova

Hello, Chris, a picture of your plant would help to solve the problem. We have been around Bajada del Agrio several times and all Pterocacti that we found there were either P. valentinii or P. fischeri. We have never seen P. neuquensis or P. tuberosus in that area. The most northern distribution of ...
by nobby
Fri Aug 20, 2021 8:33 pm
Forum: The Cactus & Succulent Plant Forum
Topic: Setiechinopsis mirabilis ..... and quite a few questions
Replies: 10
Views: 1287

Re: Setiechinopsis mirabilis ..... and quite a few questions

Hello, perhaps this story that Roberto Kiesling told us explains the questions around Setiechinopsis mirabilis: The plants usually grow in slightly saline soil. When it rains heavily, the salt is washed into the lower layers, the seeds germinate and the plants grow, flower and produce vast ...