polemonium

Updated: May 25, 2025

It evidently belonged to the group of sporting varieties already referred to. All others came absolutely true to type without any exception. The species experimented with, were Campanula persicifolia, Hyssopus officinalis, Lobelia syphilitica, Lychnis chalcedonica, Polemonium dissectum, Salvia sylvestris and some others.

Hugo de Vries - Species and Varieties, Their Origin by Mutation

True hybrids between species may arise in quite the same way, and since it is obviously impossible to attribute them to an innate tendency to reversion, they afford an absolutely irrefutable proof of the assertion that pollen is often brought by insects from one lot of plants to another. In this way I obtained a hybrid between the common Jacob's ladder and the allied species Polemonium dissectum.

Hugo de Vries - Species and Varieties, Their Origin by Mutation

As the variety does not give such reversions when cultivated in isolation, this sport was obviously due to some cross in the former year. In the same way I tried the white Jacob's ladder, Polemonium coeruleum album in the neighborhood of the blue-flowered species, the distance in this case being only 40 meters.

Hugo de Vries - Species and Varieties, Their Origin by Mutation

CARNATION POPPY. These are made by culture into numerous varieties, and are very beautiful; but the aroma, which is pregnant with opium, renders too many of them unpleasant for the garden. POLEMONIUM coeruleum. GREEK VALERIAN, or JACOB'S LADDER. Is also a beautiful perennial, and claims the notice of the gardener. Its variety, with white flowers, is also ornamental.

William Salisbury - The Botanist's Companion, Volume II

Another new species, Chrysothamnus Monocephala, or Alpine rabbit-brush, is a very low, shrubby plant, with insignificant pale yellow flowers. A beautiful little plant, well adapted to rockeries and suited for cultivation, is Polemonium Montrosense. Under good conditions it grows excellently. It was found on the summit of Mt. Rose, and at lower elevations.

George Wharton James - The Lake of the Sky: Lake Tahoe in the High Sierras of California and Nevada, its History, Indians, Discovery by Frémont, Legendary Lore, Various Namings, Physical Characteristics, Glacial Phenomena, Geology, Single Outlet, Automobile Routes, Historic Towns, Early Mining Excitements, Steamer Ride, Mineral Springs, Mountain and Lake Resorts, Trail and Camping Out Trips, Summer Residences, Fishing, Hunting, Flowers, Birds, Animals, Trees, and Chaparral, with a Full Account of the Tahoe National Forest, the Public Use of the Water of Lake Tahoe and Much Other Interesting Matter

The pretty pinnate leaves of the blue-flowered polemonium are sufficient explanation for the common name Jacobs-ladder, even though that name does not properly belong to our species. The purple trilliums, like the Dutchman's breeches, felt the effects of the many April and early May frosts but now they are coming into their beauty.

Frederick John Lazell - Some Spring Days in Iowa

Even the tops of the mountains are blessed with flowers, dwarf phlox, polemonium, ribes, hulsea, etc. I have seen wild bees and butterflies feeding at a height of 13,000 feet above the sea. Many, however, that go up these dangerous heights never come down again.

John Muir - The Mountains of California