Regularity: Regularly occurring
Regularity: Regularly occurring
Localities documented in Tropicos sources
Canada (North America)
United States (North America)
Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.
- Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville. http://www.tropicos.org/Reference/1103
- Voss, E. G. 1985. Michigan Flora. Part II Dicots (Saururaceae-Cornaceae). Bull. Cranbrook Inst. Sci. 59. xix + 724. http://www.tropicos.org/Reference/1700
- Correll, D. S. & M. C. Johnston. 1970. Man. Vasc. Pl. Texas i–xv, 1–1881. The University of Texas at Dallas, Richardson. http://www.tropicos.org/Reference/1493
- Small, J. K. 1933. Man. S.E. Fl. i–xxii, 1–1554. Published by the Author, New York. http://www.tropicos.org/Reference/1515
- Great Plains Flora Association. 1986. Fl. Great Plains i–vii, 1–1392. University Press of Kansas, Lawrence. http://www.tropicos.org/Reference/637
- Munz, P. A. & D. D. Keck. 1959. Cal. Fl. 1–1681. University of California Press, Berkeley. http://www.tropicos.org/Reference/1717
- Munz, P. A. 1974. Fl. S. Calif. 1–1086. University of California Press, Berkeley. http://www.tropicos.org/Reference/1719
Molecular Biology and Genetics
Statistics of barcoding coverage: Polygonum ramosissimum
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
NatureServe Conservation Status
Rounded Global Status Rank: G5 - Secure
Plants have erect stems growing 30 to 100 cm (sometimes to 200 cm) tall, with yellowish-green to blue-green colored foliage. The stems are freely branched with closed flowers produced in groups of (1) 2 to 3(5) flowers in the upper ocreae of racemes that are up to 15 cm long, the inflorescences are spike like. The greenish-yellow, rarely pink or white marked flowers, are on pedicels that are longer than the calyx. The calyx is around 3 mm long and 5-parted with the outer three sepals longer than the inner sepals. The seeds are produced in fruits called achenes, which are ovoid in shape, dark brown in color and around 3 mm long. The achenes also have a smooth shiny surface. The late season achenes are larger, from 4 to 15mm long.
There are a number of forms and two subspecies, that vary in flower and foliage coloration. Polygonum ramosissimum has great morphological variability, which is notable on the same plant, between flowers and fruits produced early in the blooming season verses those produced late in the season, plants also show great variation over geographical areas.
In Maryland it is listed as endangered or extirpated from the state, in Pennsylvania it has been exterminated from the state, and New Hampshire lists it as threatened.
- Polygonum ramosissimum from the USDA, retrieved 14 July 2008
- Gleason, A., Henry (1963). The new Britton and Brown illustrated flora of the northeastern United States and adjacent Canada. New York Botanical Garden by Hafner Pub. Co. pp. 72–84. ISBN 63-16478 Check
- Polygonum ramosissimum in Flora of North America @ efloras.org
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