I am seeking more information and advice on where to obtain a climbing cactus I believe is a pereskia and commonly known as 'lemon vine'. I have only read about this plant but it is described as semi-deciduous, with similar flowers to a single lemon rose. It also looks like a thorny rose in winter when it loses its 'leaves'. It also has, according to memory (I wish I'd kept the article, I only made notes of it in my 'wish book') edible fruits that have a jelly like inside with a sharp lemon taste. Does this sound familiar to anyone and can you help me find one? With thanks, Jus.