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Polemonium
''Polemonium'', commonly called Jacob's ladders or Jacob's-ladders (the name derived from the Biblical story), is a genus of between 25 and 40 species of flowering plants in the family Polemoniaceae, native to cool temperate to arctic regions of the Northern Hemisphere. One species, '' Polemonium micranthum'', also occurs in the southern Andes in South America. Many of the species grow at high altitudes, in mountainous areas. Most of the uncertainty in the number of species relates to those in Eurasia, many of which have been synonymized with '' Polemonium caeruleum''. ''Polemonium'' are perennial plants (rarely annual plants) growing 10–120 cm tall with bright green leaves divided into lance-shaped leaflets. They produce blue (rarely white or pink) flowers in the spring and summer. Some species are used as food plants by the larvae of some Lepidoptera species including '' Coleophora polemoniella''. Species Kew's Plants of the World Online accepts 37 species. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polemonium Reptans
''Polemonium reptans'' is a perennial plant, perennial herbaceous plant native to eastern North America. Common names include spreading Jacob's ladder, creeping Jacob's ladder, false Jacob's ladder, abscess root, American Greek valerian, blue bells, stairway to heaven, and sweatroot. Description Jacob's ladder grows tall, with pinnate leaf, leaves up to long with 5–13 leaflets. The leaves and flower stems grow from a vertical crown (botany), crown with abundant fibrous roots. The flowers are produced in panicles on weak stems from mid to late spring. They are 1.3 cm ( in) long and have five light blue-violet petals that are fused at the base, enclosed by a tubular calyx (flower), calyx with five pointed lobes. The pollen is white. The stigma (botany), stigma extends beyond the anthers, making self-pollination difficult, so insects must Pollination#Mechanism, cross-pollinate for the plants to produce seed. Pollinated flowers develop into an oval capsule (botany), pod w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polemonium Caeruleum
''Polemonium caeruleum'', known as Jacob's-ladder 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. Growth The plant usually reaches tall and broad, but some occasionally grow taller than . It can grow in North American hardiness zone 2. Habitat The plant is native to damp grasslands, woodlands, meadows and rocky areas in temperate areas of Europe and northern Asia. Cultivation The plant normally prefers soil that is rich in moisture and lime with partial shade. Normally hardy, some cultivars (e.g. 'Blue Pearl') behave as tender biennials, which means they are effectively annuals in cooler climates (below hardiness zone 6). The plant is known to have a few landscape uses as well such as attracting beneficial insects. The plant itself is convenient for container planting due to the shape of its growth. The flower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polemonium Carneum
''Polemonium carneum'' is a plant native to the northwestern United States west of the crest of the Cascade Range, from Washington south through Oregon to the San Francisco Bay Area in California. Etymology Common names include royal Jacob's-ladder, great polemonium, Oregon polemonium and salmon polemonium. Habitat It grows in the lowlands and in prairies to moderate elevations in the mountains, and inhabits woody thickets, open and moist forests, prairie edges, and roadsides. Description This is a rhizomatous perennial herb producing one or more stems decumbent in form or erect to a maximum height near one meter. The leaves are compound with up to 21 leaflets each. The sticky-haired leaflets are somewhat lance-shaped and up to 4 centimeters long. The inflorescence In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polemonium Boreale
''Polemonium boreale'', the northern Jacob's-ladder or boreal Jacobs-ladder, is a plant native to most of the high arctic. In Greenland it is found only in a small area on the east coast. It is not very common. The whole plant is pubescent, with long woolly hairs, glandular, and grows to 5–10 cm tall. The basal leaves are more or less alternate, and pinnate, with numerous leaflets. The flowers are produced in a more or less capitate inflorescence, each flower bell-shaped, blue, 15 mm long, 2.5 times longer than the calyx. The plant has a very unpleasant smell, and grows on gravelly slopes and in crevices. Image:Polemonium boreale - Jacobsledder2.jpg, Native to most of the high arctic, its range includes Svalbard Svalbard ( , ), previously known as Spitsbergen or Spitzbergen, is a Norway, Norwegian archipelago that lies at the convergence of the Arctic Ocean with the Atlantic Ocean. North of continental Europe, mainland Europe, it lies about midway be .... ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polemonium Acutiflorum
''Polemonium acutiflorum'', known as tall Jacob's-ladder, is a flowering plant in the family Polemoniaceae. It is native to western Canada and Alaska Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ....Maiz-Tome, L. 2016. Polemonium acutiflorum. The IUCN Red List of Threatened Species 2016: e.T64321387A67730462. https://dx.doi.org/10.2305/IUCN.UK.2016-1.RLTS.T64321387A67730462.en. Downloaded on 30 March 2020. References acutiflorum Flora of Northern America {{Polemoniaceae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polemonium Micranthum
''Polemonium micranthum'' is a species of flowering plant in the phlox family known by the common names annual polemonium or annual Jacob's-ladder. It is native to western North America from British Columbia to North Dakota to California as well as disjunct in the Andes of southern Argentina and Chile. It can be found in many types of shrubby habitat, such as sagebrush scrub and foothill woodlands. It is an annual herb with a branching or unbranched stem taking a matted, spreading, or upright form. The slender stems are up to about 30 centimeters long and the herbage is coated in short, soft hairs and stalked glands. The leaves are located along the stem, each divided into several small leaflets. The solitary flowers have small white or pale blue lobed corollas tucked within cuplike calyces of hairy, pointed sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
