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Hydrocharitaceae

including Najadaceae

Blyxa Noronha ex Thouars

Last edited by Pieter B. Pelser, 2 August 2017

Photos
  1. Blyxa aubertii Rich., Mém. Inst. Paris 12, 2 (1812) 19-23, 77, t. 4. 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, Fig. 6a; --Blyxa aubertii var. echinosperma (C.B.Clarke) C.D.K.Cook & Lüönd, Aquat. Bot. 15 (1983) 14; --Steen. & 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 Merr., PJS 7 c (1912) Bot. 73; EPFP 1 (1922) 27 non (Roxb.) Planch. ex Thwaites. 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, Fig. 7; 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]

Edited by Pieter B. Pelser, 29 October 2016

Photos
  1. Elodea nuttallii (Planch.) H.St.John, Rhodora 22 (1920) 29. Native to Canada and USA. Naturalized in Philippines?

Enhalus Rich.

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

Halophila Thouars

Edited by Pieter B. Pelser, 29 October 2016

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, Fig. 17a. Sri Lanka, Myanmar, S Vietnam, Borneo (Sarawak), Philippines. LUZON: Manila Bay.
  2. Halophila decipiens Ostenf., Botanisk Tidsskrift 24 (1902) 260.
  3. Halophila gaudichaudii J.Kuo, Acta Phytotax. Geobot. 57 (2006) 145.
  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, Fig. 17b. --Halophila ovata 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, Fig. 16.
  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, Fig. 19. 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.

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, Fig. 1-3. S & E Europe, Africa, S & E Asia to Australia. Throughout Malesia. Photos

Hydrocharis L.

No Photos
  1. Hydrocharis dubia (Blume) Backer, Handb. Fl. Java 1 (1925) 64; --Hartog, Fl. Males. ser. 1, 5 (1957) 394, Fig. 9. --Boottia renifolia Merr., PJS 4 c (1909) Bot. 247; --Merr., EPFP 1 (1922) 27. S & E Asia to N Australia. In Malesia: Java, Philippines, Sulawesi (SW & SE peninsula), New Guinea. LUZON: Camarines Sur (Bicol River).

 Najas L.

Last edited by Pieter B. Pelser, 3 August 2017

Photos
  1. Najas graminea Delile, Fl. Aegypt. (1812) 282, t. 50, f. 3; --Merr., Fl. Manila (1912) 68; EPFP 1 (1922) 24. Photos
  2. Najas indica (Willd.) Cham. --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.

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, Fig. 10, 11. 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

Photos
  1. Thalassia hemprichii (Ehrenb.) 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, Fig. 14. E Africa, Seychelles, Red Sea, Sri Lanka, Andaman Isls, Cocos Is, Indochina, throughout Malesia to the W Pacific, viz. Ryukyu Isls, Micronesia, New Ireland, New Hanover, New Britain, New Caledonia, Queensland. Photos

Vallisneria L.

Edited by Pieter B. Pelser, 13 December 2015

Photos
  1. Vallisneria nana R.Br., Prodr. Fl. Nov. Holland (1810) 345. --Vallisneria natans auct. non (Lour.) Hara, J. Jap. Bot. 49 (1974) 19-137; --Steen., Addenda, Corrigenda et emendanda, Fl. Males. ser. 1, 7 (1974) 828. --Vallisneria gigantea Graebner 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

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Last updated 2 August 2017