For some reason, the IPNI recently changed the spelling to S. x readei - see
IPNI. But the CP Database, still has it, despite its new spelling, as an unaccepted name, valid names are listed there, in all bold. It is, however, valid to call it -
Sarracenia rubra x
leucophylla or
Sarracenia leucophylla x
rubra. The hybrid formula are much easier to understand. Many people, and even many nurseries, are continuing to use invalid or inaccurate names - it is a real trouble , for some of us. I quit counting, how many times I received plant material, that I eventually discovered, was actually misidentified, it was actually something other than what it was sold/gifted/traded to me as. Not always the direct fault of the person I got the plant(s) from. What bothers me most, is when I'm fooled, and unintentionally continue to distribute plants I accept as correctly identified, then belatedly discover they are not. :-(
If you can, I'd check with the originator. Since there is no valid published species by that name. There is no
Sarracenia purpurea subsp.
venose var.
montana. Perhaps it is simply a misnamed
S.
purpurea var.
montana. Maybe they are the hybrid (
S.
purpurea var.
montana x
S.
purpurea subsp.
venosa) - since a simple hybrid, can be written with or without the parentheses.
Thanks for clarifying the definition of OP. It is not an abbreviation that I've seen used before with CP, but it makes perfect sense.
When I'm writing plant names on an international, public forum, I try to remember that many viewers of these posts may have no idea about valid, accurate, names, they may be inspired to try to locate and grow plants we write about here, but if the names are not correct, they may be disappointed when they try to locate what they see and read about in our posts. However, if we all use the same names to describe the same plants. everyone's experience, expert and beginner alike will have a better chance to be the best experience, possible.
BTW, BaseDrifter, I really enjoy your photo's.