Ottelia alismoides Pers.
  • Pers., Syn. Pl. 1: 400 (1805)


This taxon is accepted by WCS higher taxonomy

General Description

Leaves varying greatly in size, up to 20 cm wide, submerged or partly emersed, broadly ovate to lanceolate, subcordate to cuneate at the base, 7- to 11-veined. Spathes with 5-10 longitudinal wings. Petals 20-30 mm, obovate, white, with a yellow spot at the base. Stamens 6-9. Styles 6-9.

Rootstock perennial. Acaulescent. Leaves with long triquetrous petioles, broadly cordate, obtuse, 7–11-nerved, 4–6 in. wide. Flowers solitary on peduncles 6 in. to 1 ft. long, hermaphrodite. Spathe closely applied to the ovary, 3–6-toothed and winged. Calyx-lobes oblong, 6 lin. long, 1 1/2 lin. wide. Petals 3, broadly ovate, shortly unguiculate, white, 1 in. long. Stamens 6–10; anthers linear, slightly shorter than the filaments. Ovary oblong, divided more or less completely into 6 cells by the intrusion of the placentas; ovules numerous; styles 6, linear, bifid.

Monoecious, dioecious or hermaphrodite, annual or perennial. Stems corm-like, simple or rarely forked. Juvenile leaves linear to obovate or spathulate. Mature leaves petiolate; blade submerged or floating, elliptic to widely ovate, 8–17 cm. long, 5.7–20 cm. wide, acute to obtuse or rounded, cuneate to cordate or somewhat involute at base, smooth, with 2–10 prominent longitudinal veins connected by cross-veins, together with many smaller longitudinal veins; leaf-margins entire or denticulate. Nodal scales 4–10 per leaf, ovoid to conical. Spathe: peduncle 10–50 cm. long, 0.17–0.5 cm. wide; body of spathe submerged, sometimes slightly inflated, cylindric to ellipsoid or urceolate, 2–6-lobed at the apex, with 3–12 crisped or wavy wings or ribs. Male flowers several per spathe, with pedicels up to 7 cm. long; ♀ and hermaphrodite flowers sessile. Sepals narrowly triangular to ovate, 0.6–2.4 cm. long, 1.8–5.7(–9) mm. wide, subobtuse to rounded, green, the margin often hyaline; petals ovate to orbicular, 1.8–3 cm. long, 0.5–1 cm. wide, rounded or obcordate, white, white with yellow base, yellow, pink to purple; stamens 3–12; anthers 2.5–4.5 mm. long, yellowish; filaments up to 6 mm. long; staminodes filiform or 2-lobed, up to 4.8 cm. long; ovary of 3–10 carpels, narrowly ellipsoid, 0.7–2.2 cm. long, ± 0.7 cm. wide; perianth-tube 0.6–0.8 cm. long, styles 3–10; stigmas 6–20, up to 6 mm. long, yellowish. Fruit ellipsoid to ovoid, rarely cylindric, 1.5–4(–5) cm. long, 1–2 cm. wide, opening by decay of the pericarp. Seeds narrowly cylindric, 0.9–1.3 mm. long, 0.3–0.5 mm. wide, dark purple to black, with longitudinal striations.

Habitat

HAB. Still or moving water up to 1 m. deep; 1050–1110 m.

Distribution

Tanzania Tarangire, 8 May 1962, Polhill & Paulo 2389!

Tanzania Manyara Ranch, farm dam, 16 Feb. 1965, Leippert 5557!

Kordofan Kotschy!

W. shore of Lake Nyasa near Raangwa, Kirk!

Literature

Syn. Pl. 1: 400 (1805); Wright in F.T.A. 7: 6 (1897); Cook & Urmi-König in Aquat. Bot. 20: 131, fig. 1, 2 (1984).

Syn. i. 400. —Benth. Flor. Austral. vi. 257; Hook. f. Flor. Brit. Ind. v. 662.

Distribution Map

 
  • Native distribution
  • Introduced distribution
Found in
  • Asia-Temperate China China North-Central
  • China South-Central
  • China Southeast
  • Hainan
  • Manchuria
  • Eastern Asia Japan
  • Korea
  • Nansei-shoto
  • Taiwan
  • Russian Far East Khabarovsk
  • Primorye
  • Asia-Tropical Indian Subcontinent Assam
  • Bangladesh
  • India
  • Nepal
  • Sri Lanka
  • Indo-China Cambodia
  • Myanmar
  • Thailand
  • Vietnam
  • Malesia Borneo
  • Jawa
  • Lesser Sunda Is.
  • Malaya
  • Maluku
  • Philippines
  • Sulawesi
  • Sumatera
  • Papuasia New Guinea
  • Solomon Is.
  • Australasia Australia Northern Territory
  • Queensland
Introduced into
  • Africa East Tropical Africa Tanzania
  • Northeast Tropical Africa Sudan
  • Northern Africa Egypt
  • Asia-Temperate Western Asia Iraq
  • Europe Southeastern Europe Italy
  • Northern America Southeastern U.S.A. Louisiana
  • Southwestern U.S.A. California

  Bibliography

  • 1 Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
  • 2 Wu, Z. & Raven, P.H. (eds.) (2010). Flora of China 23: 1-515. Missouri Botanical Garden Press, St. Louis.
  • 3 Boulos, L. (2005). Flora of Egypt 4: 1-617. Al Hadara Publishing, Cairo.
  • 4 Kress, W.J., DeFilipps, R.A., Farr, E. & Kyi, D.Y.Y. (2003). A Checklist of the Trees, Shrubs, Herbs and Climbers of Myanmar. Contributions from the United States National Herbarium 45: 1-590.
  • 5 Flora of North America Editorial Committee (2000). Flora of North America North of Mexico 22: 1-352. Oxford University Press, New York, Oxford.
  • 6 Lee, W.T. (1996). Lineamenta Florae Koreae: 1-1688. Soul T'ukpyolsi: Ak'ademi Sojok.
  • 7 Boulos, L. (1995). Flora of Egypt Checklist: i-xii, 1-287. Al Hadara Publishing, Cairo.
  • 8 Czerepanov, S.K. (1995). Vascular Plants of Russia and Adjacent States (The Former USSR): 1-516. Cambridge University Press.
  • 9 Dassanayake (ed.) (1995). A Revised Handbook to the Flora of Ceylon 9: 1-482. Oxford & IBH Publishing Co. PVT. LTD., New Delhi, Calcutta.
  • 10 Noltie, H.J. (1994). Flora of Bhutan 3(1): 1-456. Royal Botanic Gardens, Edinburgh.
  • 11 H?, P.-H. (1993). Câyc? Vi?tnam. An Illustrated flora of Vietnam 3(1): 1-603d. Pham-hoang Ho, Montréal.
  • 12 David Simpson (1989) Hydrocharitaceae. Flora of Tropical East Africa 0 (0)
  • 13 Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.
  • 14 Simpson, D. (1989). Hydrocharitaceae. Flora of Tropical East Africa: 1-29.
  • 15 Hancock, I.R. & Henderson, C.P. (1988). Flora of the Solomon Islands. Research Bulletin Dodo Creek Research Station 7: 1-203.
  • 16 Kharkevich, S.S. (ed.) (1987). Plantae Vasculares Orientalis Extremi Sovietici 2: 1-448. Nauka, Leningrad.
  • 17 Khan, M.S. & Mahbuba Halim (1985). Flora of Bangladesh 28: 1-15. Bangladesh National Herbarium, Dhaka.
  • 18 Townsend, C.C. & Guest, E. (eds.) (1985). Flora of Iraq 8: 1-440. Ministry of Agriculture & Agrarian Reform, Baghdad.
  • 19 Cook, C.D.K. & Urumi-König, K. (1984). A revision of the genus Ottelia (Hydrocharitaceae). 2. The species of Eurasia, Australasia and America. Aquatic Botany 20: 131-177.
  • 20 Ohwi, J. (1984). Flora of Japan (in English): 1-1067. Smithsonian Institution, Washington, D.C..
  • 21 Tutin, T.G. & al. (eds.) (1980). Flora Europaea 5: 1-452. Cambridge University Press.
  • 22 Hara, H., Stearn, W.T. & Williams, H.J. (1978). An Enumeration of the Flowering Plants of Nepal 1: 1-154. Trustees of British Museum, London.
  • 23 Smitinand, T. & Larsen, K. (eds.) (1978). Flora of Thailand 1: 1-694. The Forest Herbarium, National Park, Wildlife and Plant Conservation Department, Bangkok.
  • 24 Walker, E.H. (1976). Flora of Okinawa and the Southern Ryukyu Islands: 1-1159. Smithsonian Insitition Press, Washington.
  • 25 Andrews, F.W. (1956). The Flowering Plants of the Sudan 3: 1-579. T.Buncle & co., LTD., Arbroath, Scotland.
  • 26 GBIF (2008- continuously updated). Global Biodiversity Information Facility. http://www.gbif.org/.
  • 27Dandy, J.E. Ottelia Pers. Flora Europaea 5, 4 (1980).
  • 28 Van Steenis, C.G.G.J. (ed.) (1955-1958). Flora Malesiana 5: 1-595. Noordhoff-Kolff N.V., Djakarta.

 Information From

Flora of Tropical East Africa
http://apps.kew.org/efloras/
Flora of Tropical East Africa. Published on the Internet; http://apps.kew.org/efloras/
Flora of Tropical Africa
http://apps.kew.org/efloras/
Flora of Tropical Africa. Published on the Internet; http://apps.kew.org/efloras/
WCS higher taxonomy
  • C All Rights Reserved
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World Checklist of Selected Plant Families
http://apps.kew.org/wcsp/
WCSP 2014. 'World Checklist of Selected Plant Families. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://apps.kew.org/wcsp/ Retrieved 2011 onwards
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