Paper Spine Cactus
Tephrocactus articulatus var. papyracanthus
tef-roh-KAK-tus ar-tik-oo-LAH-tus (ar-tik-yoo-LAH-tus) pap-i-ra-kan-thus
Cereus articulatus, Opuntia articulatus, Opuntia andicola, Tephrocactus andicolus, Opuntia diademata, Tephrocactus diadematus, Opuntia turpinii, Tephrocactus turpinii, Opuntia papyracantha, Opuntia glomerata, Tephrocactus glomeratus, Opuntia strobiliformis, Tephrocactus strobiliformis…
Tephrocactus articulatus (Pfeiff.) Backeb. is the accepted scientific name for this species. Tephrocactus articulatus was named and documented as such by Carl Backeberg in Cactus (Paris) in 1953. This species was first named Cereus articulatus by Louis (Ludwig) Karl George Pfeiffer and documented in Enumeratio Diagnostica Cactearum in 1837. Backeberg’s description was based on using Cereus articulatus Pfeiff. as the basionym.
The International Plant Names Index (IPNI) says Tephrocactus articulatus (Otto) Backeb. is the scientific name using Opuntia articulata Otto as the basionym. That’s strange because There is no information given, other than the author’s name, for Opuntia articulata Otto. However, Mr. Backeberg must have made mention of both Opuntia articulata Otto and Cereus articulatus Pfeiff. in the same publication to have them both as basionyms for Tephrocactus articulatus. Strangely enough, the IPNI has no listing for Tephrocactus articulatus (Pfeiff.) Backeb. even though it is listed in every other database in that manner.
Tephrocactus articulatus var. papyracanthus (Phil.) Backeb. was first described by Carl Backeberg in the same publication as the species. It was first named and described as Opuntia papyracantha by Rudolph Amandus Philippi in Gartenflora in 1872. Plants of the World Online lists Tephrocactus articulatus var. papyracanthus as a synonym of the species.
The genus Tephrocactus Lem. was named and described by (Antoine) Charles Lemaire in Les Cactées Histoire in 1868. Plants of the World Online by Kew lists 9 accepted species of Tephrocactus.
The 2013 version of The Plant List named 15 accepted species but listed Tephrocactus articulatus as a synonym of Opuntia articulata (Pfeiff.) D.R.Hunt (1987). Well, that species is also now a synonym of Tephrocactus articulatus. Ummm… Didn’t Otto attempt that name already?
When I was at Wal-Mart buying cactus on February 9, 2016, a piece fell off of a Paper Spine Cactus. I just had to rescue it and bring it home. That is better than it being thrown in the trash, right? As you can see in the first photo, it didn’t take long for this little nubbin to start growing.
Origin: Western Argentina
Zones: USDA Zones 8b-10b (15 to 35° F)
Size: 6-12” if you can keep the segments from falling off.
Light: Sun to part shade
Soil: Well-draining. Potting soil amended with additional grit and pumice or perlite
Water: Average during the growing period, sparsely during the winter.
This cactus is very carefree and easy to grow. The species can be variable, some having spines and some do not. The one I have doesn’t seem to have spines, but apparently, the ones that do are very tiny and very hard to remove when they get in your fingers. These plants don’t get very tall because the segments are loosely attached and fall off easily. Then they take root and grow another plant. The feature of this variety is the papery spines rather than needles. They produce yellow or white flowers.
They like bright light and the stems will be thinner if not given enough. If the segments fall off, just stick the end in the soil and they will easily grow a new plant. In the wild, this allows them to grow large colonies.
I have had this cactus in this very small pot since I brought it home and decided it was time to put it in a larger pot on May 25.
I moved most of the potted plants to the front and back porch on July 4 after the Japanese Beetle invasion. I think all of the cactus are on the back porch in full sun except the Tephrocactus articulatus var. papyracanthus. It seems to burn very easily in too much sun although it likes bright light. GEEZ!
It does like its larger pot…
There isn’t much online about this cactus, so as time goes by I will try and give as much information as I can from my experience.
As with any cactus, they need a well-draining soil or a mix of potting soil amended with additional grit and pumice or perlite. Usually, a 2-1-1 mixture is sufficient. Some enthusiasts recommend using pumice instead of perlite, but I don’t have it locally available. They like regular watering during the growing period byt barely in the winter months. They are very drought tolerant.
I hope you enjoyed this page and maybe found it useful. If you have any comments, questions or suggestions, I would like to hear from you. Please click on “like” if you visited this page. It helps us bloggers stay motivated. 🙂 You can check out the links below for further reading. The links take you directly to the genus and species of this plant.