Onagraceae

Epilobium L.

Photos
  1. Epilobium brevifolium D.Don, Prodr. Fl. Nepal. (1825) 222.
  2. Epilobium platystigmatosum C.B.Rob., PJS 3 c (1908) Bot. 210; --Merr., EPFP 3 (1923) 221; --Raven, Blumea 15 (1967) 272; Fl. Males. ser. 1, 8 (1977) 110; --Type: Merrill 4744. Japan, China (Hubei, Jiangsu), Taiwan, N Philippines. LUZON: Ifugao, Mountain Province, Benguet. Chiefly along small streams and about cliffs, 1200-2400m. Fl. Apr-Jun.

Jussiaea L. = Ludwigia

Ludwigia L.

Last edited by Pieter B. Pelser, 18 September 2021

Photos
  1. Ludwigia adscendens (L.) Hara, J. Jap. Bot. 28 (1953) 290; --Raven, Reinwardtia 6 (1963) 387; Fl. Males. ser. 1, 8 (1977) 104; --Turner, Reinwardtia 20 (2021) 10; --Jussiaea adscendens L., Mantissa 1 (1767) 69; --Type: from India. --Jussiaea repens L., Sp. Pl. (1753) 388; --Merr., EPFP 3 (1923) 219; --Backer & Bakh.f., Fl. Java 1 (1963) 260. Africa, C America, SW Asia, Australia, Bangladesh, Borneo, Cambodia, Caribbean, China, India, Indian Ocean, Java, Laos, Lesser Sunda Isls, Moluccas, Myanmar, Nepal, New Guinea, Pakistan, Peninsular Malaysia, Sri Lanka, Sulawesi, Sumatra, Taiwan, Thailand, Vietnam, Philippines. LUZON: Laguna (photos). Freshwater pools, ditches, swamps, fallow and wet paddies, very common. Photos
  2. Ludwigia decurrens Walter, Fl. Carol. (1788) 89; --Turner, Reinwardtia 20 (2021) 15. Native to Americas. LUZON: Laguna. Not native to the Philippines. Reported from Laguna by Ramamoorthy & Zardini (1987) and listed by Moody (1986, 1989) as a weed in maize and rice in the Philippines, although Turner (2021) did not find herbarium specimens. Photos
  3. Ludwigia hyssopifolia (G.Don) Exell, Garcia de Orta 5 (1957) 471; --Raven, Reinwardtia 6 (1963) 387; Fl. Males. ser. 1, 8 (1977) 104; --Turner, Reinwardtia 20 (2021) 10; --Jussiaea hyssopifolia G.Don, Gen. Syst. 2 (1832) 693. --Jussiaea linifolia Vahl, Eclog. Am. 2 (1798) 32; --Merr., Fl. Manila (1912) 356; EPFP 3 (1923) 219; --Backer & Bakh.f., Fl. Java 1 (1963) 260. Circumtropical. Cryptogenic. Sometimes considered native to the Philippines, but invasive outside of its native distribution range (CABI, 2017). Pools, along rice paddies, canals and shallow ditches, river edges, waterlogged wastelands, etc. Lowlands. Photos
  4. Ludwigia octovalvis (Jacq.) Raven, Kew Bull. 15 (1962) 476; Reinwardtia 6 (1963) 356; Fl. Males. ser. 1, 8 (1977) 101; --Turner, Reinwardtia 20 (2021) 11; --Jussiaea octovalvis (Jacq.) Sw., Obs. Bot. (1791) 142; --Oenothera octovalvis Jacq., En. Syst. Pl. (1760) 19. --Ludwigia villosa Lam., Encycl. 3 (1789) 331; --Merr., EPFP 3 (1923) 220; --Type: from India. --Jussiaea erecta L., Sp. Pl. (1753) 388; --Merr., EPFP 3 (1923) 219. --Jussiaea suffruticosa auct. non L.; --Miq., Fl. Ind. Bat. 11 (1856) 628; --Merr., Fl. Manila (1912) 357. Pantropic, between c. 32N and 30S. Waterlogged sites, pools, rice fields, along water-courses, lake shores, also gravelly riverbeds, etc. Photos
  5. Ludwigia perennis L., Sp. Pl. (1753) 119; --Raven, Fl. Males. ser. 1, 8 (1977) 103; Reinwardtia 6 (1963) 367; --Turner, Reinwardtia 20 (2021) 13. --Ludwigia parviflora Roxb., Fl. Ind. 1 (1820) 440; Hort. Beng. (1814) 11, nom. nud.; --Merr., Fl. Manila (1912) 355; EPFP 3 (1923) 220. Afghanistan, Africa, SW Asia, Australia, Bangladesh, Borneo, Cambodia, China, Hong Kong, India, Java, Laos, Lesser Sunda Isls, Madagascar, Myanmar, Nepal, New Caledonia, New Guinea, Pakistan, Peninsular Malaysia, Sri Lanka, Sulawesi, Sumatra, Taiwan, Thailand, Vietnam, Philippines. Sunny waterlogged conditions, along fallow rice-fields, watercourses, riverbeds, on heavy clay, etc. from lowlands to c. 500m. Fl. throughout the year.
  6. Ludwigia prostrata Roxb., Fl. Ind. 1 (1820) 441; Hort. Beng. (1814) 11, nom. nud.; --Merr., Fl. Manila (1912) 355; EPFP 3 (1923) 220; --Raven, Reinwardtia 6 (1963) 374; Fl. Males. ser. 1, 8 (1977) 103; --Turner, Reinwardtia 20 (2021) 14. Andaman Isls, Bangladesh, Borneo, Cambodia, China, India, Java, Laos, Lesser Sunda Isls, Myanmar, Nepal, Nicobar Isls, Peninsular Malaysia, Sri Lanka, Thailand, Vietnam, Philippines. LUZON, PALAWAN, NEGROS, MINDANAO. Lowlands to c. 800m, along rice paddies, ditches, river banks, swampy sites, rather rare.

Cultivated, not naturalized:

  1. Fuchsia magallenica Lam., Encycl. 2 (1788) 564; --Backer & Bakh.f., Fl. Java 1 (1963) 264. Native of temperate South America. Not naturalized. Photos

Literature

CABI Invasive Species Compendium

Moody, K. 1986. A literature review of weeds in maize (Zea mays) in the Philippines. Philippine Journal of Weed Science 13: 19-27.

Moody, K. 1989. Weeds reported in rice in South and Southeast Asia. IRRI, Philippines

Ramamoorthy, TP & EM Zardini. 1987. The systematics and evolution of Ludwigia sect. Myrtocarpus sensu lato (Onagraceae). Monogr. Syst. Bot. Missouri Bot. Gard. 19: 1-120.

Raven, PH. 1963. Ludwigia. Reinwardtia 6: 327-427.

Raven, PH. 1967. The genus Epilobium in Malesia (Onagraceae). Blumea 15: 269-282

Raven, PH. 1977. Onagraceae. Flora Malesiana series 1, 8: 98-113


Turner, IM. 2021. An updated synopsis of Ludwigia (Onagraceae) in Malesia. Reinwardtia 20: 9-16


Pelser, P.B., J.F. Barcelona & D.L. Nickrent (eds.). 2011 onwards. Co's Digital Flora of the Philippines. www.philippineplants.org

Copyright 2011, Co's Digital Flora of the Philippines

Last updated 18 September 2021