the Rhode Island ones look very much like North Carolina ones only perhaps the leaves are a bit less quickly terminated. The fruits are also less inflated. Have seen pics of other northern concava that have the leaves more recumbent than the Rhode Island pics. That's the way I recall the NJ ones. Your pics look more similar to NC than NJ. All of this just general observation and not very scientific though. Cool plants!
Yucca sp. 'Coventy, RI' - Tim MA z6 September 9, 2016, 9:45 pm
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