doubts with these 2 cactus

[arturo conan]

They are equal?
Could it be Espostoa melanostele or yet Cephalocereus senilis?
no if differentiate both species

[anttisepp]

Both espostoa. 1st mb ritteri 2nd mb lanata IMHO. Grow, wach.

[DaveW]

Cephalocereus senilis has much stiffer coarser hair than Espostoa's

https://www.etsy.com/uk/listing/8622641 ... cacti-real

Evidently Cephalocereus senilis is now infrequently grown since if you put Cephalocereus senilis into Google Search most plant pictures that come up are obviously Espostoa's (ignore the plants in the boxes at the top of the link as they too are obviously Espostoa's) The small click on boxes in the left hand column are Cephalocereus senilis.

[arturo conan]

I've been investigating with your clues
Could both be Espostoa nana http://www.llifle.com/Encyclopedia/CACT ... ostoa_nana
What is your opinion?

[cactushobbyman]

Take a different picture angle to see the complete body of the first. Cephalocereus senilis does have courser hair and to my eyes, it could be. I need to see more of the plant.

[arturo conan]

now I send you detailed photos.
Are the 2 the same species?

[arturo conan]

te mando fotos

[arturo conan]

fotos

[esp_imaging]

Evidently Cephalocereus senilis is now infrequently grown

I remember it being a popular plant 40 years ago or so when I was first into cacti; less so now, it seems.
It appears much less frequently as both plants and seeds on sales lists.
Presumably Espostoa seed is widely available from field collections, and doesn't need to be huge to flower if you have a climate suitable for outdoor cultivation, so I guess that there could be seed available in the US and elsewhere from cultivated plants.
With seed exports banned from Mexico, and presumably few flowering size plants in cultivation, especially as breeding pairs, I imagine seed of C. senilis is less available.

Is the growth rate of C senilis also much less than for Espostoas, so it's less appealing to nurserymen anyway?

[esp_imaging]

I think the first plants could be C. senilis.
The second pot is an Espostoa, for sure.

[dinfelu]

Cephalocereus senilis


hello arturo conan

I show you my 2 cephalocereus, the largest one has with me about 3 years, the little one arrived about 4 months ago I hope these images will serve you so that you can identify yours .... greeting

P1120657 (Copiar).JPG (148.53 KiB) Viewed 3389 times

P1120658 (Copiar).JPG (111.14 KiB) Viewed 3389 times

P1120660 (Copiar).JPG (133.28 KiB) Viewed 3389 times

P1120662 (Copiar).JPG (111.59 KiB) Viewed 3389 times

[nona]

With seed exports banned from Mexico, and presumably few flowering size plants in cultivation, especially as breeding pairs, I imagine seed of C. senilis is less available.

Based on my search, seed (for whatever reason) hadn't been available anywhere for a long time. A quantity became available from Europe early in the year and quickly snapped up.

[Mrs.Green]

Cephalocereus senilis


hello arturo conan

I show you my 2 cephalocereus, the largest one has with me about 3 years, the little one arrived about 4 months ago I hope these images will serve you so that you can identify yours .... greeting

P1120657 (Copiar).JPG

P1120658 (Copiar).JPG

P1120660 (Copiar).JPG



P1120662 (Copiar).JPG

Hi Dinfelu When touching the hair of your specimens, does it feels coarse /stiff or soft? I have a little ‘Old man’ myself and I am trying to figure out which genus it belongs to. Judging by the photos I have studied , Cephalocereus hairs seems to resemble nylon rather than the more cottony look of Espostoa’s hair?

[DaveW]

I think that illustrates the problem in identifying plants from photo's? Dinfelu's close up shots are readily identifiable as Cephalocereus senilis, whereas the longer distance shots were more likely to be identified as Espostoa since the character and coarseness of the hair is only apparent in the close up shots.

[dinfelu]

Cephalocereus senilis


hello arturo conan

I show you my 2 cephalocereus, the largest one has with me about 3 years, the little one arrived about 4 months ago I hope these images will serve you so that you can identify yours .... greeting

P1120657 (Copiar).JPG

P1120658 (Copiar).JPG

P1120660 (Copiar).JPG



P1120662 (Copiar).JPG

Hi Dinfelu When touching the hair of your specimens, does it feels coarse /stiff or soft? I have a little ‘Old man’ myself and I am trying to figure out which genus it belongs to. Judging by the photos I have studied , Cephalocereus hairs seems to resemble nylon rather than the more cottony look of Espostoa’s hair?

hello Mrs. Green



hair feels hard not at all soft a little rough


greeting