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Hydrocharitaceae

including Najadaceae

Blyxa Noronha ex Thouars

Last edited by Pieter B. Pelser, 4 November 2017

Photos
  1. Blyxa aubertii Rich., Mém. Cl. Sci. Math. Inst. Natl. France 1811(2) (1814) 19. Africa, Madagascar, Tropical and subtropical Asia to N 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. Tropical and subtropical Asia to N 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. S New Guinea, Philippines. LUZON: Benguet (Mt Tabayoc). Based on sterile specimen collected by Jacobs.

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 to Canada and USA. 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. Madagascar, Seychelles, Red Sea, Sri Lanka, Nicobar Isls, Andaman Isls, widespread across Malesia to the tropical parts of W Pacific, Ryukyu Isls, Marianas, New Britain, New Ireland, the Solomon Isls, New Caledonia, Queensland (Cape York).

Halophila Thouars

Last edited by Pieter B. Pelser, 4 November 2017

No 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, S Vietnam, Borneo (Sarawak), Philippines. LUZON: Manila Bay.
  2. Halophila decipiens Ostenf., Botanisk Tidsskrift 24 (1902) 260. Tropical and subtropical oceans.
  3. Halophila gaudichaudii J.Kuo, Acta Phytotax. Geobot. 57 (2006) 145. Kenya to Seychelles, India to W Pacific.
  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. W India (Madras) to the Gulf of Siam, across Malesia to the Marianas.
  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.
  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 and adjacent isls, Riouw Archipelago, W & E Java, Philippines, New Guinea, NE and W coasts of Australia. LUZON: Manila; Camarines, KINALASAG, 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. S & E Europe, Africa, S & E Asia to Australia. Throughout Malesia. 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. S & E Asia to N Australia, Java, Philippines, Sulawesi (SW & SE peninsula), New Guinea. LUZON: Camarines Sur (Bicol River).

 Najas L.

Last edited by Pieter B. Pelser, 4 November 2017

Photos
  1. Najas graminea Delile, Fl. Aegypt. (1812) 282, t. 50; --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. Temperate and subtropical Eurasia to N 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. 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. E Africa, Seychelles, Red Sea, Sri Lanka, Andaman Isls, Cocos Is, Indochina, throughout Malesia to the W Pacific, Ryukyu Isls, Micronesia, New Ireland, New Hanover, New Britain, New Caledonia, Queensland. 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, E Australia to Tasmania, possibly also in Melanesia. 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.

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 4 November 2017