Hydrocharitaceae

including Najadaceae

Blyxa Noronha ex Thouars

Last edited by Pieter B. Pelser, 30 November 2020

Photos
  1. Blyxa aubertii Rich., Mém. Cl. Sci. Math. Inst. Natl. France 1811(2) (1814) 19. Africa, Madagascar, Asia, Australia, Philippines. Photos
  2. Blyxa echinosperma (C.B.Clarke) Hook.f., Fl. Brit. Ind. 5 (1888) 661; --Hartog, Fl. Males. ser. 1, 5 (1957) 391; --Blyxa aubertii var. echinosperma (C.B.Clarke) C.D.K.Cook & Lüönd, Aquat. Bot. 15 (1983) 14; --Steenis & W.J.de Wilde, Addenda, corrigenda & emendanda,  Fl. Males. ser. 1, 10 (1989) 717; --Hydrotrophus echinospermus C.B.Clarke, J. Linn. Soc., Bot. 14 (1873) 8. --Blyxa octandra auct. non (Roxb.) Planch. ex Thwaites; --Merr., PJS 7 c (1912) Bot. 73; EPFP 1 (1922) 27. Asia, Australia, Philippines. LUZON, PALAWAN.
  3. Blyxa novoguineensis Hartog, Act. Bot. Neerl. 6 (1957) 47; Fl. Males. ser. 1, 5 (1957) 393; Addenda, corrigenda et emendanda, Fl. Males. ser. 1, 6 (1972) 952. New Guinea, Philippines. LUZON: Benguet. Based on sterile specimen collected by Jacobs from Mt Tabayoc.

Possibly present:

  1. Blyxa octandra (Roxb.) Planch. ex Thwaites, Enum. Pl. Zeyl. (1864) 332; --Vallisneria octandra Roxb., Pl. Coromandel 2 (1802) 34. Andaman Isls, Australia, Bangladesh, China, India, Myanmar, New Guinea, Sri Lanka, Vietnam. Reported for the Philippines by Moody (1989) as a weed in rice, but no specimens cited.

Elodea Michx. [Not native]

Last edited by Pieter B. Pelser, 4 November 2017

Photos
  1. Elodea nuttallii (Planch.) H.St.John, Rhodora 22 (1920) 29; --Anacharis nuttallii Planch., Ann. Sci. Nat., Bot., sér. 3, 11 (1849) 74. Native N America. Naturalized in Philippines?

Enhalus Rich.

Last edited by Pieter B. Pelser, 4 November 2017

Photos
  1. Enhalus acoroides (L.f.) Royle, Ill. (1840) 453; Steudel, Nomencl. ed. 2, 1 (1840) 554; --Merr., EPFP 1 (1922) 27; --Hartog, Fl. Males. ser. 1, 5 (1957) 402; Addenda, corrigenda et emendanda, Fl. Males. ser. 1, 6 (1972) 952; --Stratiotes acoroides L.f., Suppl. Pl. (1782) 268. Africa, Madagascar, Middle East, Australia, Philippines, India, Sri Lanka, Andaman Isls, Bismarck Arch, Borneo, Cambodia, Pacific Ocean, Java, Lesser Sunda Isls, Malay Peninsula, Indian Ocean, Myanmar, Ryukyu Isls, New Caledonia, New Guinea, Nicobar Isls, Solomon Isls, Sulawesi, Sumatra, Thailand, Vietnam. Photos

Halophila Thouars

Last edited by Pieter B. Pelser, 11 July 2020

Photos
  1. Halophila beccarii Aschers., Nuov. Giorn. Bot. Ital. 3 (1871) 302; --Merr., Fl. Manila (1912) 70; EPFP 1 (1922) 25; --Hartog, Fl. Males. ser. 1, 5 (1957) 411. Sri Lanka, Myanmar, Vietnam, Borneo, Philippines. LUZON. Known from Manila Bay.
  2. Halophila decipiens Ostenf., Botanisk Tidsskrift 24 (1902) 260; --Fortes, PJS 142 (2013) 96. America, Caribbean, Africa, India, Sri Lanka, Philippines, Australia, Bangladesh, Indian Ocean, Java, Moluccas, Myanmar, Ryukyu Isls, New Caledonia, Pacific Ocean, Taiwan, Vietnam.
  3. Halophila gaudichaudii J.Kuo, Acta Phytotax. Geobot. 57 (2006) 145. Africa, Indian Ocean, Pacific, Philippines.
  4. Halophila major (Zoll.) Miq., Fl. Ned. Ind. 3 (1856) 230; --Lemnopsis major Zoll., Syst. Verz. Ind. Archip. 1 (1854) 75. China to Malesia and Caroline Isls., Philippines.
  5. Halophila minor (Zoll.) Hartog, Fl. Males. ser. 1, 5 (1957) 410. --Halophila ovata auct. non Gaudich.; --Merr., Fl. Manila (1912) 70; EPFP 1 (1922) 26. India, Africa, Australia, Philippines, Pacific Ocean, China, Indian Ocean, Java, Lesser Sunda Isls, Malay Peninsula, Moluccas, Ryukyu Isls, New Caledonia, New Guinea, Solomon Isls, Sulawesi, Sumatra, Taiwan, Thailand, Vietnam.
  6. Halophila ovalis (R.Br.) Hook.f., Fl. Tasm. 2 (1860) 45; --Merr., EPFP 1 (1922) 26; --Hartog, Fl. Males. ser. 1, 5 (1957) 408; --Caulinia ovalis R.Br., Prodr. Fl. Nov. Holland. (1810) 339. Photos
  7. Halophila spinulosa (R.Br.) Aschers., Neumayer Anleit. Wissensch. Beob. (1875) 368; --Merr., EPFP 1 (1922) 26; --Hartog, Fl. Males. ser. 1, 5 (1957) 412; --Caulinia spinulosa R.Br., Prodr. Fl. Nov. Holland. (1810) 339. Peninsular Malaysia, Singapore, Java, Philippines, New Guinea, Australia. LUZON: Manila, Camarines, MINDORO, MINDANAO.

Hydrilla Rich.

Last edited by Pieter B. Pelser, 4 November 2017

Photos
  1. Hydrilla verticillata (L.f.) Royle, Ill. Bot. Himal. (1839) t. 376; --Merr., Fl. Manila (1912) 69; EPFP 1 (1922) 26; --Hartog, Fl. Males. ser. 1, 5 (1957) 385; --Serpicula verticillata L.f., Suppl. Pl. (1782) 416. Europe, Africa, Continental Asia, Australia, Middle East, Philippines, Afghanistan, Pakistan, India, Sri Lanka, Bangladesh, Borneo, Cambodia, China, Japan, Java, Korea, Lesser Sunda Isls, Malay Peninsula, Moluccas, Myanmar, Ryukyu Isls, Nepal, New Guinea, Sulawesi, Sumatra, Taiwan, Thailand, Tibet, Vietnam. Photos

Hydrocharis L.

Last edited by Pieter B. Pelser, 4 November 2017

No Photos
  1. Hydrocharis dubia (Blume) Backer, Handb. Fl. Java 1 (1925) 64; --Hartog, Fl. Males. ser. 1, 5 (1957) 394; --Pontederia dubia Blume, Enum. Pl. Javae 1 (1827) 33. --Boottia renifolia Merr., PJS 4 c (1909) Bot. 247; --Merr., EPFP 1 (1922) 27. India, Bangladesh, China, Japan, Korea, Myanmar, Ryukyu Isls, Taiwan, Thailand, Vietnam, Java, Philippines, Sulawesi, New Guinea. LUZON: Camarines Sur.

 Najas L.

Last edited by Pieter B. Pelser, 4 November 2017

Photos
  1. Najas graminea Delile, Fl. Aegypt. (1812) 282; --Merr., Fl. Manila (1912) 68; EPFP 1 (1922) 24. Photos
  2. Najas indica (Willd.) Cham., Linnaea 4 (1829) 501; --Caulinia indica Willd., Mém. Acad. Roy. Sci. Hist. (Berlin) 1798 (1801) 89. --Najas palustris Blanco, Fl. Filip. (1837) 660; --Merr., EPFP 1 (1922) 25. Tropical and subtropical Asia, Philippines.
  3. Najas malesiana W.J.de Wilde, Acta Bot. Neerl. 10 (1961) 168. E India to Malesia, Philippines.
  4. Najas minor All., Auct. Syn. Meth. Stirp. Hort. Regii Taur. (1773) 3. Eurasia, Africa, Philippines.
  5. Najas tenuifolia R.Br., Prodr. Fl. Nov. Holl. (1810) 345.

Ottelia Pers.

Last edited by Pieter B. Pelser, 4 November 2017

Photos
  1. Ottelia alismoides (L.) Pers., Syn. 1 (1805) 400; --Merr., Fl. Manila (1912) 70; EPFP 1 (1922) 27; --Hartog, Fl. Males. ser. 1, 5 (1957) 398; --Stratiotes alismoides L., Sp. Pl. (1753) 535. Africa, India, China, Japan, Australia, Solomon Isls, Philippines. Widely distributed from NE Africa and common in SE Asia, extending from India eastwards to China and Japan, southward throughout Malesia to tropical Australia and the Solomon Isls. Photos

Thalassia Banks ex K.D.Koenig

Last edited by Pieter B. Pelser, 4 November 2017

Photos
  1. Thalassia hemprichii (Ehrenb. ex Solms) Aschers. in Engl. & Prantl, Nat. Pflanzenfam. 21 (1889) 254; --Merr., Fl. Manila (1912) 71; EPFP 1 (1922) 27; --Hartog, Fl. Males. ser. 1, 5 (1957) 406; --Schizotheca hemprichii Ehrenb. ex Solms, Abh. Königl. Akad. Wiss. Berlin 1 (1832) 429. Africa, Indian Ocean, Middle East, Sri Lanka, India, Andaman Isls, Bismarck Arch, Borneo, Ryukyu Isls, Pacific Ocean, Java, Lesser Sunda Isls, Malay Peninsula, Moluccas, Myanmar, New Caledonia, Australia, Philippines, Nicobar Isls, Solomon Isls, Sulawesi, Sumatra, Taiwan, Thailand, Vietnam. Photos

Vallisneria L.

Last edited by Pieter B. Pelser, 4 November 2017

Photos
  1. Vallisneria nana R.Br., Prodr. Fl. Nov. Holland (1810) 345. --Vallisneria natans auct. non (Lour.) H.Hara; --Steenis, Addenda, Corrigenda et emendanda, Fl. Males. ser. 1, 7 (1974) 828. --Vallisneria gigantea Graebn. in Engl., Bot. Jahrb. 49 (1912) 68; --Merr., Fl. Manila (1912) 69; EPFP 1 (1922) 26; --Hartog, Fl. Males. ser. 1, 5 (1957) 388. Iraq, India, Indochina, China, Korea, Japan, Philippines, New Guinea, Australia. LUZON, MINDORO. Photos

Literature

Fortes, MD. 2013. A review: biodiversity, distribution and conservation of Philippine seagrasses. Philippine Journal of Science 142: 95-111

Hartog, C den. 1957. Hydrocharitaceae. Flora Malesiana series 1, 5: 381-413

Hartog, C den. 1970. Sea Grasses of the World, 213-268.

Les, DH, SWL Jacobs, NP Tippery, L Chen, ML Moody & M Wilstermann-Hildebrand. 2008. Systematics of Vallisneria (Hydrocharitaceae). Systematic Botany 33: 49-65

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

Wilde, WJJO de. 1962. Najadaceae. Flora Malesiana series 1, 6: 157-171

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 7 January 2022