Polemonium caeruleum, known as Jacob's-ladder[2] or Greek valerian, is a hardy perennial flowering plant. The plant produces cup-shaped, blue or white flowers. It is native to temperate regions of Europe. It is the type species of the phlox family, Polemoniaceae.
^The Plant List: A Working List of All Plant Species, retrieved 11 May 2016
^BSBI List 2007(xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 17 October 2014.
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Polemoniumcaeruleum, known as Jacob's-ladder or Greek valerian, is a hardy perennial flowering plant. The plant produces cup-shaped, blue or white flowers...
those in Eurasia, many of which have been synonymized with Polemoniumcaeruleum. Polemonium are perennial plants (rarely annual plants) growing 10–120 cm...
(Filipendula ulmaria) and sometimes the uncommon Greek valerian (Polemoniumcaeruleum). Most willowherbs will not tolerate shade trees and thus are limited...
grazed north-facing slopes of dales are a national stronghold of Polemoniumcaeruleum (Jacob's ladder), the county flower of Derbyshire. The largest towns...
rock face with small subsidiary colonies nearby. Jacob's-ladder (Polemoniumcaeruleum), a rarish species characteristic of limestone dales in the White...
Flowers (June 23) Compound leaf (June 23) Polemonium vanbruntiae is similar to P. caeruleum and P. reptans. Polemonium vanbruntiae was described and named by...
nutcracker Sika deer Siberian dwarf pine Callianthemum hondoense Polemoniumcaeruleum Englishman Walter Weston introduced the Western world to the Japanese...
2002, the county flower for Derbyshire has been Jacob's-ladder (Polemoniumcaeruleum), a relatively rare species, and characteristic of certain limestone...
diversity in western North America. Only one genus (Polemonium) is found in Europe, and two (Phlox and Polemonium) in Asia, where they are confined to cool temperate...
R. (1997). "Expression of shoot processes in leaf development of Polemoniumcaeruleum". Botanische Jahrbücher für Systematik. 119: 563–582. Sack, Lawren;...
common name for several plants and may refer to: Polemoniumcaeruleum, native to Europe Polemonium reptans, native to North America This page is an index...
(Lophocolea bidentata sensu lato) One rare species, Jacob's-ladder (Polemoniumcaeruleum), is associated with this community. This community is confined to...
end of Lathkill Dale is well known for the flower Jacob's ladder (Polemoniumcaeruleum), which is common in gardens but rare in the wild. There are also...
Sattler, R. 1997. Expression of shoot processes in leaf development of Polemoniumcaeruleum. Botanische Jahrbücher für Systematik 119: 563-582. Lacroix C.; et al...
Americans. Cantua buxifolia is the national flower of Peru. Ericales Polemoniumcaeruleum Primulaceae (primrose family) Primula, from a Medieval Latin plant...
capensis Hydrolea zeylanica Navarretia leucocephala Polemonium acutiflorum Polemonium pulcherrimum Polemonium viscosum There are 277 species and 11 subspecies...
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