One and a half IDs

If you have a cactus plant and need help identifying it, this is the place to post it.
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HP22B
Posts: 238
Joined: Tue Jul 29, 2014 2:43 pm

One and a half IDs

Post by HP22B »

Hello everyone, I have two cacti I'd like to get some IDs for. I say one and a half in the title because I am relatively sure the first one is a Pilosocereus royenii, but I wouldn't mind some confirmation.

First:
Image
This came from the Caribbean. Yellow spines are about an inch in length, 9 ribs, black areoles, white hair-like spines running the length of the cactus. Like I said, pretty sure this is Pilosocereus royenii, but please correct me if not.

Second:
Image
I have no information on where this came from. The taller one has five ribs, the smaller one looks to have six. It has tiny spines and a lot of white hair running up and down its length.

I would've had a third for you, but someone already posted an ID thread with the same cactus in question.

Thanks for the help!
Last edited by HP22B on Wed Jul 30, 2014 10:18 pm, edited 1 time in total.
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oldcat61
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Joined: Mon Apr 08, 2013 12:48 pm
Location: Southern NJ

Re: One and a half IDs

Post by oldcat61 »

The 2nd one is probably Pilosocereus glaucochrous. Popular in big-box stores. Sue
DaveW
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Joined: Thu Dec 20, 2012 2:36 pm
Location: Nottingham, England/UK

Re: One and a half IDs

Post by DaveW »

Looks long spined than cultivated P. royenii, so could be a more robust habitat cut therefore longer spined:-

http://luirig.altervista.org/schedenam/ ... us+royenii" onclick="window.open(this.href);return false;

http://commons.wikimedia.org/wiki/File: ... oyenii.jpg" onclick="window.open(this.href);return false;

Obviously plants also vary across their range. Is the following the one your cut came off? :lol:

https://www.flickr.com/photos/moremyste ... 897634648/" onclick="window.open(this.href);return false;
HP22B
Posts: 238
Joined: Tue Jul 29, 2014 2:43 pm

Re: One and a half IDs

Post by HP22B »

P. glaucochrous definitely looks right for the second one, thanks Sue.

Dave, the first picture in the first link you posted looks almost identical to mine, the rest of the pictures definitely have shorter, non-yellow spines. It could be a variation kind of thing, since the area this cutting came from seemed to have two dominant forms of columnar cacti - this one and another that looks like the small spined version. Might be some crossing going on as well.

Thanks!
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