Yes, it is an heirloom chewing / syrup variety, ribbon cane was still a popular variety grown in south Louisiana until modern hybrid canes became popular in the 1960's, although from what I have read the popularity for commercial production of this specific variety really started dropping off in the early 1900's in favor of canes like Louisiana Green and Purple ribbon due to its relatively small size and weak canes which can snap in strong wind if not planted in a location with a good wind break.
Ike
p.s. I suspect you will find all local citrus sources will have stocks of trees that have been treated since Harris county is in the Texas HLB / Citrus greening quarantine zone Deadly Citrus Tree Disease - Texas Citrus Greening It is legal to bring citrus into the quarantine zone, it is just illegal to carry it out or between different counties in the quarantine, however the whole state of Texas is under quarantine for ACP and it is illegal to import citrus into the state. The same goes for Louisiana, where the whole state here is also under ACP quarantine, so even though both Texas and Louisiana are under ACP quarantine it is illegal for me to buy citrus from a grower 20 miles away in Texas and bring it home.
Ike
p.s. I suspect you will find all local citrus sources will have stocks of trees that have been treated since Harris county is in the Texas HLB / Citrus greening quarantine zone Deadly Citrus Tree Disease - Texas Citrus Greening It is legal to bring citrus into the quarantine zone, it is just illegal to carry it out or between different counties in the quarantine, however the whole state of Texas is under quarantine for ACP and it is illegal to import citrus into the state. The same goes for Louisiana, where the whole state here is also under ACP quarantine, so even though both Texas and Louisiana are under ACP quarantine it is illegal for me to buy citrus from a grower 20 miles away in Texas and bring it home.