Dear Martin!
Thank´s for your statement about basilaris. I think, all the plants who was
descript as "basilaris" in the cacti-nurserys are only spineless forms of
O.polyacantha v.erinacea (utahensis), comes from Utah.
There are very hardy and robust plants, grows many years outside of
my greenhouse and bring each year very rich flowers (look at my pic-
ture, 22 flowers on one pad!!). Mrs. Ivana Richter write a very interest
article in the magazine kaktusy 2004 special 2.
You say, it dont exist yellow colours of flower on basilaris-forms. What do
you think about O.basilaris v.humistrata?
I take a few pictures of basilaris-forms, i have in my collection

Op.polyacantha v.erinacea (utahensis) spineless form, who was in the
nurserys descripted as basilaris-hybrid

typical "Beaver-tail" Opuntia basilaris comes from Mohave 2100m

One of my basilaris Favourites v.brachyclada, very small clusters,
wonderfull flowers