Cactus and Succulents forum→Unknown Columnar Cactus - Help with Identification?

Views: 1475, Replies: 5 » Jump to the end
Name: TK
Ontario, Canada (Zone 6b)
Cactus and Succulents Sempervivums Adeniums Bromeliad Tropicals Aroids
Hibiscus Sedums Container Gardener
Image
Macrocentra
Apr 20, 2020 2:10 PM CST
Hello, everyone! My name is TK and I'm from Ontario, Canada.
I just joined the forum as I enjoy collecting cactuses and succulents, and currently have a collection of 28 plants (all indoor).

I recently began repotting some plants for the spring, and realized I still don't have a certain identification for a couple of species. This one in particular has been a challenge to ID. Any ideas?

I've owned it for about a year, and purchased it as an "assorted cactus" from a local nursery. It was the only one in their collection that was very different from the rest, and so it caught my eye. It's currently about 6" tall. It has small dark red spines mixed in the clusters of white spines, and the "hairs" concentrated in the lower half are flexible and feel a bit like straw. I'd like to repot it soon, as it's becoming a bit rootbound, but given I don't have an identification, I'm not sure which type of pot to relocate it to. Given I'm not sure what kind it is, I haven't given it any special care other than my usual care routine for the rest of my cactus species, however, it's been doing well.


Thumb of 2020-04-20/Macrocentra/48f758

Tried to get a closeup of some of the spines, if at all helpful:

Thumb of 2020-04-20/Macrocentra/45ad91

Any thoughts are much appreciated!
Name: Stefan
SE europe(balkans) (Zone 6b)
Cactus and Succulents Adeniums Foliage Fan Bromeliad Container Gardener Tropicals
Sempervivums Plant Lover: Loves 'em all! Sedums Orchids Garden Procrastinator Bulbs
Image
skopjecollection
Apr 20, 2020 2:24 PM CST
Clesitocactus ...i think smaragdiflorus
Name: Baja
Baja California (Zone 11b)
Cactus and Succulents Seed Starter Foliage Fan Xeriscape Container Gardener Hummingbirder
Native Plants and Wildflowers Garden Photography Region: Mexico Plant Identifier Forum moderator Plant Database Moderator
Image
Baja_Costero
Apr 20, 2020 4:22 PM CST

Moderator

Welcome! TK!

I can't identify the cactus but I love the spines.
Name: TK
Ontario, Canada (Zone 6b)
Cactus and Succulents Sempervivums Adeniums Bromeliad Tropicals Aroids
Hibiscus Sedums Container Gardener
Image
Macrocentra
Apr 20, 2020 4:28 PM CST
skopjecollection said:Clesitocactus ...i think smaragdiflorus


Thank you for the quick reply! I'll do some more reading into that species. Smiling


Baja_Costero said:I can't identify the cactus but I love the spines.


Agreed! It's one of my two favorites in my collection.



Name: TK
Ontario, Canada (Zone 6b)
Cactus and Succulents Sempervivums Adeniums Bromeliad Tropicals Aroids
Hibiscus Sedums Container Gardener
Image
Macrocentra
Apr 20, 2020 10:29 PM CST
Is there a telltale physical difference between Cleistocactus smaragdiflorus, and Cleistocactus hyalacanthus?
Name: Stefan
SE europe(balkans) (Zone 6b)
Cactus and Succulents Adeniums Foliage Fan Bromeliad Container Gardener Tropicals
Sempervivums Plant Lover: Loves 'em all! Sedums Orchids Garden Procrastinator Bulbs
Image
skopjecollection
Apr 20, 2020 10:50 PM CST
Macrocentra said:Is there a telltale physical difference between Cleistocactus smaragdiflorus, and Cleistocactus hyalacanthus?


When young, smaragdiflorus should have those upright spines.
Hyalacanthus has more dense ribs and areoles.
If anything hyalacanthus looks closer to strausii than to smaragdiflorus...
https://upload.wikimedia.org/w...
if anything, smaragdiflorus should look closer to samaipatanus but with spinier
Of course the flowers are dead giveway(smaragd means emerald in my language, so im going to guess its the same for latin), therefore smaragdiflorus blooms are green(or rather, their ends)
[Last edited by skopjecollection - Apr 20, 2020 10:56 PM (+)]
Give a thumbs up | Quote | Post #2212584 (6)

« Garden.org Homepage
« Back to the top
« Forums List
« Cactus and Succulents forum
Only the members of the Members group may reply to this thread.

Member Login:

[ Join now ]

Today's site banner is by dirtdorphins and is called "Ambassador "

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.