Trichocereus Blog: PC

Posts mit dem Label PC werden angezeigt. Alle Posts anzeigen

Sonntag, 6. November 2016

Trichocereus riomizquensis (Ritter)

Trichocereus riomizquensis (Ritter)
Trichocereus riomizquensis is a Bolivian Trichocereus closely related to Trichocereus bridgesii. It is a regional form of T. bridgesii that only endemic to one site in Bolivia near the Rio Mizque.
The species was discovered and described by the German cactus...
Trichocereus riomizquensis (Ritter)

Freitag, 22. April 2016

The PC Trichocereus clone- What the heck?

The PC Trichocereus clone- What the heck?
I wanted to clarify some things about the PC Trichocereus clone. What it is, where it probably is from and what it isnt. The name is probably the most overused name in the history of Trichocereus culture. I personally hate it and spent days discussing...
The PC Trichocereus clone- What the heck?

Samstag, 30. Mai 2015

BK10512.1 Trichocereus riomizquensis, Totora, Cochabamba, Bolivia 2010

BK10512.1 Trichocereus riomizquensis, Totora, Cochabamba, Bolivia 2010

This is one of the most interest Trichocereus Riomiqzensis species from the Sacred Succulents Field Trips because it is an intermediate between the Trichocereus Bridgesii-type Riomizquensis from the Field Trips and the Pachanoid ones that Friedrich Ritter published a picture of. If you look closely at this type, you can see a similar areole shape to the one on the PC Pachanoi. Though this type has a totally different spination, you can see that the areoles here are somewhat similar. Imagine this type without the long strong spines and you have a very similar plant.

My personal opinion is that the PC Pachanoi (OC stands for Predominate cultivar) is actually a form of Trichocereus Riomizquensis, which is something like an intermediate between Trichocereus Bridgesii and Trichocereus Pachanoi. There is a whole lot variation within the Riomizquensis populations and everyone of the types I have on this site are unique in a way. This is one of the most interesting Trichocereus species and I am constantly looking for seeds or cuttings.

Where to buy seeds or cuttings of Trichocereus Riomizquensis: Well, Ben of Sacred Succulents would be my starting point if I were in the US. They don´t ship plants internationally but if you have the luck to be in the US, you might be able to get some cuttings. Apart from that, I do not know any sources for this cool plant. The fact that most of those would be labeled as Trichocereus Bridgesii doesnt make it easier to get some. So yeah, expect to encounter them labeled as Trichocereus Bridgesii.

BK10512.1 Trichocereus riomizquensis, Totora, Cochabamba, Bolivia 2010

Trichocereus Riomizquensis

Trichocereus Riomizquensis

Now let´s take a closer look at this interesting species. The Plant that is understood to be Trichocereus Riomizquensis is a pachanoid column that would most likely not even be considered a variety, because it is very similar to the description of Trichocereus Pachanoi.

The fact that there are many Bridgesiioid Tricho´s growing in the direct neighborhood of this Pachanoid is probably responsible for the fact that there also are Bridgesii´s that are labeled as Trichocereus Riomizquensis. The “Species” was discovered by the german cactus field botanist Friedrich Ritter, who gave Chuyllas near the Rio Mizque as the typus location and mentioned it would grow on steep slopes in the provence Campero.

His Field Number was FR 856. Friedrich Ritter ran a Seed Shop and sold this species as seed to people all over the world. I will add a picture of his “Riomizquensis” later.

Trichocereus Riomizquensis was also visited during the Sacred Succulents Fieldtrips and they found a couple of different types growing around that area.

This is a pic of a botanical sample of Trichocereus Riomizquensis, Copyright Ben Kamm, Sacredsucculents.com . The spines on this herbarium paper look definitely bridgesoid. Please not what is written on the first pic about the plant being “aff. lageniformis/pachanoi”, which is really interesting! So apparently this is either a very untypical Trichocereus that can have traits of both species or there are more than one plant that are called Trichocereus Riomizquensis.

Where to buy seeds and plants of Trichocereus Riomizquensis: Well, this one is kinda hard to find. Sacred Succulents were giving away seeds after their Field Trips and some plants might have gotten into the hands of collectors. Unfortunately, I havent seen any plants raised from their seeds. Some of the plants they encountered with this label were Bridgesiis while some others were Pachanois. They usually occur in Bolivia. You can ask Ben of Sacred Succulents. http://sacredsucculents.com.

I am always looking for seeds of Trichocereus Riomiquensis.

This is a description that is based on Friedrich Ritters description, including remarks on how to keep it apart from Scopulicola. Trichocereus Riomizquensis is 6-8 centimeters thick (while Trichocereus Scopulicola is 8-10 centimeters thick), it has 5-6 ribs, (Scop: 4-6), flanks 2 centimeters wide (scop 3-4), less rounded than scop. It has rounded areoles (while the ones on Scop are usually ovally). The areoles have a very visible fluff with a diameter of 2-3 mm. The 1-5 spines are honey-colored and between 1-3 mm long. Sometimes even missing.

Flower: The flower of Trichocereus Riomizquensis is 20 centimeters long (while Scopulicola is 16-20) and has dark brown wool with large scales. The fruit looks kinda bumpy.

Typus Location: Chuyllas near the Rio Mizque, on very steep rock walls in the provence Campero, Bolivia. Discovered from Ritter in 1958 – FR 856.

There are more pics of Trichocereus Riomizquensis on those pages.