Polemonium

'' '' Kew's Plants of the World Online accepts 37 species. Many are locally known simply as "Jacob's ladder". • Polemonium acutiflorum – tall Jacob's ladder • Polemonium boreale – northern Jacob's ladder • Polemonium brandegeei – Brandegee's Jacob's ladder • Polemonium caeruleum – Jacob's ladder (the original plant to bear this name); charity • Polemonium californicum – showy Jacob's ladder • Polemonium campanulatum • Polemonium carneum – royal Jacob's ladder • Polemonium caucasicum • Polemonium chartaceum – Mason's Jacob's ladder • Polemonium chinense • Polemonium confertum – Rocky Mountain Jacob's ladder • Polemonium eddyense – Mount Eddy Jacob's-ladder • Polemonium elegans – elegant Jacob's ladder • Polemonium elusum – elusive Jacob's-ladder • Polemonium eximium – sky pilot • Polemonium foliosissimum – towering Jacob's ladder • Polemonium glabrum • Polemonium grandiflorum • Polemonium hingganicum • Polemonium kiushianum • Polemonium majus • Polemonium mexicanum • Polemonium micranthum – annual polemonium • Polemonium nevadense – Nevada Jacob's ladder • Polemonium occidentale – western Jacob's ladder • Polemonium pauciflorum – few-flower Jacob's ladder • Polemonium pectinatum – Washington Jacob's ladder • Polemonium pulchellum • Polemonium pulcherrimum – beautiful Jacob's ladder • Polemonium reptans – Jacob's ladder, Greek valerian • Polemonium sachalinense • Polemonium schizanthum • Polemonium schmidtii • Polemonium × speciosum • Polemonium sumushanense • Polemonium vanbruntiae – Vanbrunt's Jacob's ladder • Polemonium × victoris • Polemonium vilosissimum • Polemonium villosum • Polemonium viscosum – sticky polemonium • Polemonium yezoense ==References==