Help With Identification

[Rebrab123]

Hi,
I have recently become interested in cacti, so I purchased a few.
I would now like to know the names of the cacti that I have.
One of my friends knows a little about cacti, and he had a go at identifying them, however he was unsure, so suggested that I ask for some other people's opinions.
The cacti, along with the names that I currently have for each, are below:

IMG_6115.JPG (65.6 KiB) Viewed 1358 times

Echinocereus Rigidissimus ssp. Rubispinus (Ruby Rainbow Cactus)

IMG_6116.JPG (59.51 KiB) Viewed 1358 times

Mammillaria Elongata ssp. Elongata (Ladyfinger Cactus)

IMG_6117.JPG (61.21 KiB) Viewed 1358 times

Mammillaria Karwinskiana ssp. Nejapensis (Owl Eyes Cactus)

IMG_6118.JPG (55.86 KiB) Viewed 1358 times

Cereus Repandus ssp. Montrose (Dwarf) (Peruvian Apple Cactus)

IMG_6119.JPG (71.87 KiB) Viewed 1358 times

Haworthia Attenuata ssp. Attenuata (Zebra Plant)

IMG_6120.JPG (59.28 KiB) Viewed 1358 times

Cereus Validus

IMG_6121.JPG (70.73 KiB) Viewed 1358 times

Arthrocereus Rondonianus

IMG_6122.JPG (66.62 KiB) Viewed 1358 times

Espostoa Guentheri






Thanks in advance...

[DaveW]

1st you have correctly identified as Echinocereus rigidissimus ssp. rubispinus (Frank & Lau) N. P. Taylor (originally published as Echinocereus pectinatus var. rubispinus Frank & Lau). Note it is often found misspelt "rubrispinus", but rubispinus is the correct original spelling as you have it. It is unusual in that it is one of the few Echinocereus that does not have the characteristic green stigma lobes most of the genus possess. Incidentally in botanical names only the genus is spelt with a capital letter, all specific and subspecific names are spelt with a small letter even if named after people.

rubispinus.jpg (94.47 KiB) Viewed 1320 times

[Rebrab123]

Thanks Dave, any thoughts on the others?

[7george]

That "Cereus Validus" looks like a Pilosocereus, maybe Pilosocereus pachycladus, but is still young, hard to say for sure.

[Rebrab123]

Thanks George, I've just looked at some pictures of that species, and I think you may be right!
Thanks.

[WayneByerly]

going at it from the top:
#1 Echinocereus Rigidissimus ssp. Rubispinus ... i've seen these often, and even have one myself ... yours look MUCH better than mine do.

#2 Mammillaria Elongata ... lady finger or copper king ... hard to tell when they are so small ... this is MY copper king ... for comparison

2015-12-27 127.jpg (48.07 KiB) Viewed 1168 times

#3 Mammillaria baumii ... a picture of mine for comparison

2015-12-16 002.jpg (114.8 KiB) Viewed 1168 times

#4 Cereus Forbesii monstrose ... a picture of mine for comparison

2015-12-05 001.jpg (50.96 KiB) Viewed 1168 times

#5 an aloe of SOME sort ... NO idea ... sorry

#6 i have a Pilosocereus pachycladus that looks VERY similar, but am not certain, so i offer no opinion here.

#7 & #8 ... NO idea ... sorry.

hope this helps in ANY degree

[jmoney]

# 4 is Cereus jamacaru monstrose, not Cereus Forbesii monstrose (which is something entirely different)