Caltha natans is an aquatic herbaceous perennial that is insect pollinated. Unlike other species of Caltha that are found in North America, C. natans shows relatively little morphological variation, and has not been divided into infraspecific taxa. The plants typically grow in shallow water, with floating leaves up to 25 millimetres (0.98 in) wide and 50 mm (2.0 in) long,[3] on a petiole (leaf stalk) up to 70 mm (2.8 in) long.[4] The flowers are roughly 5 mm (0.20 in) in diameter and have five white or pinkish sepals; they are produced in late spring (June–August).[3] Each flower forms 20–55 follicles, which contain black, elliptic seeds 0.5–0.8 mm (0.020–0.031 in) in diameter.[3][4]
In Minnesota it is list as a threatened species, it is generally rare or very localized throughout its native range in North America, It has only been found a few times south of the Canadian boarder and a number of these locations have been wiped out by habitat loss.[5]
Habitatedit
Caltha natans is found growing in shallow, slow-moving streams and creeks, it is also found in pools, ditches, and along sheltered lake margins, swamps, and beaver ponds. The stems root at the nodes in mud, silt, or clay. It can be found growing in populations with a few scattered individuals, or as dense mats consisting of many plants. In Minnesota, C. natans has been found growing with other plants like Glyceria spp. (manna grass), Carex spp. (sedges), Potamogeton spp. (pondweed), and Utricularia spp. (bladderwort).[6]
^ abcdBruce A. Ford (1997). "Caltha Linnaeus, Sp. Pl. 1: 558. 1753; Gen. Pl. ed. 5, 244, 1754". In Flora of North America Editorial Committee (ed.). Magnoliophyta: Magnoliidae and Hamamelidae. Flora of North America. Vol. 3. Oxford University Press. pp. 187–189. ISBN9780195112467. Retrieved October 23, 2013.
^ abcLi Liangqian & Michio Tamura. "Caltha Linnaeus, Sp. Pl. 1: 558. 1753; Gen. Pl. ed. 5, 244; 1754". Caryophyllaceae through Lardizabalaceae. Flora of China. Vol. 6. pp. 135–136. ISBN1-930723-05-9. Retrieved October 23, 2013.
^Barbara Coffin; Lee Pfannmuller (1988). Minnesota's Endangered Flora and Fauna. U of Minnesota Press. p. 61. ISBN978-0-8166-1689-3.
^Smith, Welby R. "Rare Species Guide". dnr.state.mn.us. from the original on 2009-02-11.
External linksedit
Media related to Caltha natans at Wikimedia Commons
December 15, 2023
caltha, natans, species, flowering, plant, buttercup, family, goes, common, name, floating, marsh, marigold, scientific, classificationkingdom, plantaeclade, tracheophytesclade, angiospermsclade, eudicotsorder, ranunculalesfamily, ranunculaceaegenus, calthaspe. Caltha natans is a species of flowering plant in the buttercup family It goes by the common name floating marsh marigold 2 Caltha natansScientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade EudicotsOrder RanunculalesFamily RanunculaceaeGenus CalthaSpecies C natansBinomial nameCaltha natansPall ex GeorgiSynonyms 1 Caltha baicalensis P A Demidov ex Steud Caltha pusilla Pursh Thacla natans Pall Deyl amp Sojak Contents 1 Description 2 Distribution 3 Habitat 4 References 5 External linksDescription editCaltha natans is an aquatic herbaceous perennial that is insect pollinated Unlike other species of Caltha that are found in North America C natans shows relatively little morphological variation and has not been divided into infraspecific taxa The plants typically grow in shallow water with floating leaves up to 25 millimetres 0 98 in wide and 50 mm 2 0 in long 3 on a petiole leaf stalk up to 70 mm 2 8 in long 4 The flowers are roughly 5 mm 0 20 in in diameter and have five white or pinkish sepals they are produced in late spring June August 3 Each flower forms 20 55 follicles which contain black elliptic seeds 0 5 0 8 mm 0 020 0 031 in in diameter 3 4 Distribution editCaltha natans has an amphi Beringian distribution being found in both North America and East Asia In Asia it is found in Siberia Mongolia and the Chinese provinces of Heilongjiang and Nei Mongol 4 In North America it is found in Alaska the Canadian provinces of British Columbia North West Territories Yukon Saskatchewan Alberta Manitoba and Ontario and in a small part of the contiguous United States in the states of Minnesota and Wisconsin 3 In Minnesota it is list as a threatened species it is generally rare or very localized throughout its native range in North America It has only been found a few times south of the Canadian boarder and a number of these locations have been wiped out by habitat loss 5 Habitat editCaltha natans is found growing in shallow slow moving streams and creeks it is also found in pools ditches and along sheltered lake margins swamps and beaver ponds The stems root at the nodes in mud silt or clay It can be found growing in populations with a few scattered individuals or as dense mats consisting of many plants In Minnesota C natans has been found growing with other plants like Glyceria spp manna grass Carexspp sedges Potamogeton spp pondweed and Utricularia spp bladderwort 6 References edit Caltha natans Pall www worldfloraonline org Retrieved 2020 12 08 Floating Marsh Marigold Caltha natans Wisconsin DNR dnr wi gov Retrieved 2020 12 08 a b c d Bruce A Ford 1997 Caltha Linnaeus Sp Pl 1 558 1753 Gen Pl ed 5 244 1754 In Flora of North America Editorial Committee ed Magnoliophyta Magnoliidae and Hamamelidae Flora of North America Vol 3 Oxford University Press pp 187 189 ISBN 9780195112467 Retrieved October 23 2013 a b c Li Liangqian amp Michio Tamura Caltha Linnaeus Sp Pl 1 558 1753 Gen Pl ed 5 244 1754 Caryophyllaceae through Lardizabalaceae Flora of China Vol 6 pp 135 136 ISBN 1 930723 05 9 Retrieved October 23 2013 Barbara Coffin Lee Pfannmuller 1988 Minnesota s Endangered Flora and Fauna U of Minnesota Press p 61 ISBN 978 0 8166 1689 3 Smith Welby R Rare Species Guide dnr state mn us Archived from the original on 2009 02 11 External links edit nbsp Media related to Caltha natans at Wikimedia Commons Retrieved from https en wikipedia org w index php title Caltha natans amp oldid 1160260099, wikipedia, wiki, book, books, library,
