Distribution in Egypt
Nile Valley North of Nubia (Location: Delta), Nile Valley North of Nubia (Location: Fayium), Nile Valley North of Nubia, Nubia, Libyan Desert Oases, Nubian Desert Oases, Mareotic Sector.
Atlantic Islands, Central and southern Europe, Britain, North Africa, Southwest and Central Asia,
Localities documented in Tropicos sources
Brazil (South America)
Chile (South America)
Ecuador (South 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.
- Forzza, R. C. & et al. 2010. 2010 Lista de espécies Flora do Brasil. http://floradobrasil.jbrj.gov.br/2010/. http://www.tropicos.org/Reference/100002289
- 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
- Gleason, H. A. 1968. The Choripetalous Dicotyledoneae. vol. 2. 655 pp. In H. A. Gleason Ill. Fl. N. U.S. (ed. 3). New York Botanical Garden, New York. http://www.tropicos.org/Reference/1704
- Marticorena, C. & M. Quezada. 1985. Catálogo de la Flora Vascular de Chile. Gayana, Bot. 42: 1–157. http://www.tropicos.org/Reference/1592
- Lourteig, A. 1989. 135. Lythraceae. 37: 1–46. In G. W. Harling & B. B. Sparre (eds.) Fl. Ecuador. University of Göteborg and Swedish Museum of Natural history, Göteborg and Stockholm. http://www.tropicos.org/Reference/27898
- Jørgensen, P. M. & S. León-Yánez. (eds.) 1999. Catalogue of the vascular plants of Ecuador. Monogr. Syst. Bot. Missouri Bot. Gard. 75: i–viii, 1–1181. http://www.tropicos.org/Reference/42250
- Fernald, M. 1950. Manual (ed. 8) i–lxiv, 1–1632. American Book Co., New York. http://www.tropicos.org/Reference/1327
- 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
Regularity: Regularly occurring
Regularity: Regularly occurring
Height: 15-40 cm.
Moist ground, marshes, ditches.
Life History and Behavior
NatureServe Conservation Status
Rounded Global Status Rank: G5 - Secure
Lythrum hyssopifolia (orth. var. L. hyssopifolium) is a species of flowering plant in the loosestrife family known by the common names hyssop loosestrife and grass-poly. It is native to Europe but it is known elsewhere, including parts of Australia and eastern and western North America, as an introduced species and sometimes a weed. It often grows in moist habitat, such as marshes and wet agricultural fields, rice paddies, for example. This is a mostly upright, branching annual or biennial herb growing 10 to 60 centimeters tall. The oval leaves are arranged oppositely lower on the plant, and often alternately toward the top. They are up to 3 centimeters in length. The inflorescence is a terminal spike of flowers with pinkish petals up to half a centimeter long. The fruit is an oval capsule containing many minute seeds.