Pterocactus spec.nova

This forum is for discussion about small Opuntias, open to all.
Post Reply
User avatar
Chris in Leeds
BCSS Member
Posts: 1683
https://www.behance.net/kuchnie-warszawa
Joined: 11 Jan 2007
Branch: None
Country: UK
Role within the BCSS: Member

Pterocactus spec.nova

Post by Chris in Leeds »

I have a plant that I got from Rene with the following on the label anyone know anymore about it
Pterocactus spec.nova
NEUQUEN 700m BAJADA DEL AGRO
Chris
BCSS MEMBER SINCE 2000 (NATIONAL SHOW)
FORUM MEMBER SINCE JUNE 2006
Interested in - TURBINICARPUS (Always looking for plants I don't have)
TEPHROCACTUS AND RELATED SPECIES
http://www.leeds.bcss.org.uk/ http://www.zone3.bcss.org.uk/
User avatar
Tony R
Moderator
Posts: 4011
Joined: 20 Apr 2009
Branch: BROMLEY
Country: UK
Role within the BCSS: Member
Location: Hartley, LONGFIELD, Kent

Re: Pterocactus spec.nova

Post by Tony R »

Elisabeth & Norbert Sarnes' species?
Pterocactus neuquensis
https://www.ipni.org/n/77157412-1
Tony Roberts
Treasurer, Haworthia Society
Chairman, Tephrocactus Study Group
Moderator, BCSS Forum
Kent
(Gasteria, Mammillaria, small Opuntia, Cleistocactus and Sempervivum are my current special interests)
User avatar
Chris in Leeds
BCSS Member
Posts: 1683
Joined: 11 Jan 2007
Branch: None
Country: UK
Role within the BCSS: Member

Re: Pterocactus spec.nova

Post by Chris in Leeds »

I did wonder if it was there plant but as there wasn’t a collection number
Thanks Tony I will update the label
Chris
BCSS MEMBER SINCE 2000 (NATIONAL SHOW)
FORUM MEMBER SINCE JUNE 2006
Interested in - TURBINICARPUS (Always looking for plants I don't have)
TEPHROCACTUS AND RELATED SPECIES
http://www.leeds.bcss.org.uk/ http://www.zone3.bcss.org.uk/
User avatar
Phil_SK
Moderator
Posts: 5442
Joined: 11 Jan 2007
Branch: MACCLESFIELD & EAST CHESHIRE
Country: UK
Role within the BCSS: Forum Moderator
Location: Stockport, UK

Re: Pterocactus spec.nova

Post by Phil_SK »

There are records in Ralph's database from Bajada del Agrio for P. valentinii and P. fischeri as well as a couple of 'sp.'. If you look at the distribution maps in Elisabeth & Norbert's book, P. tuberosus, P. neuquensis and possibly P. araucanus could all be from here, though it's difficult to be sure due to the map resolution.

In the TSG journal Tephrocactus (2011, 17(1), 12) there is mention of a "Pterocactus spec. nova JL 101 WG 471 Neuquen 700m High Bajada del Agno" [sic] and JL101 is listed in Ralph's database as 'sp.' collected in 1983 but elsewhere in Tephrocactus (2003, 9(4), 600) as P. araucanus. I think it's likely that this is your plant as René had given it a WG number.

In their description of P. neuquensis, E&N recognise that plants of their new species have been in cultivation for a long time as P. araucanus so Lambert's plant could be misidentified.

Has your plant flowered? Assuming P. tuberosus, P. valentinii and P. fischeri can be ruled out then the position of the flower on the stem would resolve the plants identity.
Phil Crewe, BCSS 38143. Mostly S. American cacti, esp. Lobivia, Sulcorebutia and little Opuntia
User avatar
Phil_SK
Moderator
Posts: 5442
Joined: 11 Jan 2007
Branch: MACCLESFIELD & EAST CHESHIRE
Country: UK
Role within the BCSS: Forum Moderator
Location: Stockport, UK

Re: Pterocactus spec.nova

Post by Phil_SK »

It dawned on me later that Lambert might've illustrated JL101 in his book, and he did. Is this your plant? https://www.cactuspro.com/lecture/Lambe ... 61.en.html
Phil Crewe, BCSS 38143. Mostly S. American cacti, esp. Lobivia, Sulcorebutia and little Opuntia
User avatar
nobby
BCSS Member
Posts: 101
Joined: 02 May 2011
Branch: None
Country: Germany

Re: Pterocactus spec.nova

Post by nobby »

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 P. araucanus that we know is more than 50 km south of Zapala, i.e. more than 100 km south of Bajada del Agrio. Thus P. araucanus is highly improbable.
The picture of JL 101 shows Pterocactus valentinii.

Norbert
User avatar
Chris in Leeds
BCSS Member
Posts: 1683
Joined: 11 Jan 2007
Branch: None
Country: UK
Role within the BCSS: Member

Re: Pterocactus spec.nova

Post by Chris in Leeds »

At the time I got two or three cuttings of both the plant you mention Phil and I potted them up separately but all I can find for definite is the two in the picture with Rene’s labels in I have two plant near that look similar but the labels have faded
F31D346F-EE26-4026-90D7-DCAC6E25D6C9.jpeg
20FB3272-4E04-42FC-AB1B-9EC4AA29D01E.jpeg
My plants have been a bit neglected for the last 3/4 years due to family health issues
Chris
BCSS MEMBER SINCE 2000 (NATIONAL SHOW)
FORUM MEMBER SINCE JUNE 2006
Interested in - TURBINICARPUS (Always looking for plants I don't have)
TEPHROCACTUS AND RELATED SPECIES
http://www.leeds.bcss.org.uk/ http://www.zone3.bcss.org.uk/
User avatar
nobby
BCSS Member
Posts: 101
Joined: 02 May 2011
Branch: None
Country: Germany

Re: Pterocactus spec.nova

Post by nobby »

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

Norbert
User avatar
Chris in Leeds
BCSS Member
Posts: 1683
Joined: 11 Jan 2007
Branch: None
Country: UK
Role within the BCSS: Member

Re: Pterocactus spec.nova

Post by Chris in Leeds »

These are the two other plants I mentioned they look the the same to me but I’m no expert
84443C68-7124-49CE-B0EF-81AD572DBE16.jpeg
Chris
BCSS MEMBER SINCE 2000 (NATIONAL SHOW)
FORUM MEMBER SINCE JUNE 2006
Interested in - TURBINICARPUS (Always looking for plants I don't have)
TEPHROCACTUS AND RELATED SPECIES
http://www.leeds.bcss.org.uk/ http://www.zone3.bcss.org.uk/
Post Reply