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This species is accepted, and its native range is Egypt to India and W. Indian Ocean.
A specimen from Kew's Herbarium

[FSOM]

M. Thulin et al. Flora of Somalia, Vol. 1-4 [updated 2008] https://plants.jstor.org/collection/FLOS

Morphology General Habit
Plants dioecious; rhizome terete, O.5–2 mm in diam.; internodes O.5–4 cm long; scales conspicuous, obovate, markedly emarginate, keeled, 6–15 x 4–10 mm
Morphology Leaves
Spathal leaves keeled, hairy Leaves in pairs, 1 pair on each lateral shoot; blade oblong or linear-elliptic, often slightly curved, membranous or ± cartilaginous and becoming bullate with age, 1.5–6 x 0.2–1 cm, serrulate at least near the rounded or obtuse apex, cuneate or gradually decurrent into the petiole at the base; midrib and submarginal veins connected by numerous pairs of inconspicuous lateral veins ascending at angles of 40–60°; petiole O.5–1.5 mm long, sheathing at the base
Morphology Reproductive morphology Flowers
Female flower sessile; ovary ellipsoid of 3 carpels, 1.5–2.5 mm long; hypanthium 3–5 mm long, with 3 rudimentary petals; styles 3, extending into filiform stigmas 15–20 mm long Male flower with pedicel 7–15 mm long; tepals ovate, U-shaped in cross-section, 4 x 2.5 mm, with a prominent central vein; anthers 2–3.5 mm long
Morphology Reproductive morphology Fruits
Fruit ellipsoid, c. 5 mm long, with a beak up to 6 mm long, 30–40-seeded.
Ecology
In shallow sandy or silty areas of the sublittoral subject to slight to moderate wave action.
Distribution
C1; S2, 3, no doubt occurring also further to the north; widespread throughout the coast of East Africa from the Red Sea to Madagascar, in the Persian Gulf and in the southern part of the Indian Peninsula.
Note
Plants with membranous, smooth leaves and more or less deciduous scales have often been treated as a separate species, H. balfourii Soler., as opposed to plants with more or less cartilaginous, bullate leaves and stiff, persistent scales. Both forms have been collected along the coast of Somalia, bullate-leaved ones in C1, and smooth-leaved ones in S2 and S3. The differences are probably due to environmental conditions, but the relationship between H. stipulacea and H. balfourii should be studied further.

[FTEA]

Hydrocharitaceae, David Simpson. Flora of Tropical East Africa. 1989

Morphology General Habit
Dioecious.
Morphology Roots
Roots 1 per node.
Vegetative Multiplication Rhizomes
Rhizome narrowly terete, unbranched, 0.2–2 mm. in diameter, whitish or greenish.
Morphology Stem
Erect stems narrowly terete, up to 1.5 mm. long, 0.2–0.5 mm. wide.
Morphology Leaves
Leaves in pairs, 1 pair on each erect stem; blade linear to oblong or linear-elliptic, 1.5–8 cm. long, 2–6 mm. wide, often slightly falcate, obtuse or rounded at apex, cuneate at base, glabrous, somewhat translucent, light to mid-green, rarely dark green, with 2 of the longitudinal veins running just below the margin, connected by numerous pairs of somewhat inconspicuous cross-veins ascending at an angle of 40–60°; margins green, serrate at least near the apex; petiole 0.4–1.5 cm. long.
Morphology Leaves Stipules
Stipules obovate, 8–17 mm. long, 4.2–10 mm. wide, notched, strongly keeled, glabrous, greenish or whitish.
Morphology Reproductive morphology Flowers
Male flowers not seen. Female flowers:spathe-bracts ovate, ± 10 mm. long, ± 0.7 mm. wide, emarginate, keeled, the keel denticulate, whitish, translucent; ovary of 3 carpels, ovate or ovate-elliptic, 2–3 mm. long, perianth-tube up to 6 mm. long, the lower portion persisting as beak in fruit; styles 3; stigmas 3, 20–25 mm. long.
sex Male
Male flowers not seen.
sex Female
Female flowers:spathe-bracts ovate, ± 10 mm. long, ± 0.7 mm. wide, emarginate, keeled, the keel denticulate, whitish, translucent; ovary of 3 carpels, ovate or ovate-elliptic, 2–3 mm. long, perianth-tube up to 6 mm. long, the lower portion persisting as beak in fruit; styles 3; stigmas 3, 20–25 mm. long.
Morphology Reproductive morphology Fruits
Fruit ellipsoid, ± 5 mm. long, ± 2 mm. wide, with beak up to 6 mm. long, whitish or brown.
Morphology Reproductive morphology Seeds
Seeds up to 40, subglobose, 0.5–0.6 mm. long, ± 0.5 mm. wide, reticulate, light brown.
Habitat
On sand and mud in sheltered sea-water up to ± 7 m. deep
Distribution
K7

Native to:

Comoros, Egypt, Eritrea, Gulf States, India, Kenya, Libya, Madagascar, Mauritius, Mozambique, Palestine, Rodrigues, Saudi Arabia, Seychelles, Sinai, Somalia, Sudan, Yemen

Introduced into:

East Aegean Is., Greece, Kriti, Sicilia, Turkey, Windward Is.

Halophila stipulacea (Forssk.) Asch. appears in other Kew resources:

Date Reference Identified As Barcode Type Status
Sep 2, 1871 Balour, I.B. [s.n.], Rodrigues K000524853
Farmer, A.S.D., Bahrain 37673.000
Kotschy, C.G.T. [412], Syria K000524848
Pike [13], Mauritius K000524854
s.coll. [s.n.], Egypt K000524846
Pullen, W.J.S. [s.n.] K000524847

First published in Sitzungsber. Ges. Naturf. Freunde Berlin 1867: 3 (1867)

Accepted by

  • Acevedo-Rodríguez, P. & Strong, M.T. (2012). Catalogue of seed plants of the West Indies Smithsonian Contributions to Botany 98: 1-1192.
  • Andrews, F.W. (1956). The Flowering Plants of the Sudan 3: 1-579. T.Buncle & co., LTD., Arbroath, Scotland.
  • Bosser, J. & al. (1984). Flore des Mascareignes 191-201 IRD Éditions, MSIRI, RBG-Kew, Paris.
  • Boulos, L. (1995). Flora of Egypt Checklist: i-xii, 1-287. Al Hadara Publishing, Cairo.
  • Boulos, L. (2005). Flora of Egypt 4: 1-617. Al Hadara Publishing, Cairo.
  • Chaudhary, S.A. (2001). Flora of the Kingdom of Saudi Arabia 3: 1-368. Ministry of Agriculture & Water, Riyadh.
  • Danin, A. (2004). Distribution Atlas of Plants in the Flora Palaestina area: 1-517. The Israel Academy of Sciences and Humanities, Jerusalem.
  • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
  • Davis, P.H. (ed.) (1984). Flora of Turkey and the East Aegean Islands 8: 1-632. Edinburgh University Press, Edinburgh.
  • Den Hartog, C. (1970). The sea-grasses of the world Verhandelingen der Koninklijke Nederlandsche Akademie van Wetenschappen, Afdeeling Natuurkunde, Tweede Sectie 59(1): 1-275.
  • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
  • Edwards, S., Demissew, S. & Hedberg, I. (eds.) (1997). Flora of Ethiopia and Eritrea 6: 1-586. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
  • Güner, A. (ed.) (2018). Resimli Türkiye Floras? (Illustrated Flora of Turkey) 2: 1-1054. ANG Vakf?/Nezahat Gökyi?it Botanik Bahçesi, Istambul.
  • Jongbloed, M., Western, R.A. & Boer, B. (2000). Annotated Check-list for plants in the U.A.E.: 1-90. Zodiac Publishing, Dubai.
  • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.
  • Kuo, J. & de Hertog, C. (2001). Seagrass taxonomy and identification key Global Seagrass Research Methods: 31-78. Elsevier Science B.V., Amsterdam.
  • Simpson, D. (1989). Hydrocharitaceae Flora of Tropical East Africa: 1-29.
  • Thulin, M. (ed.) (1995). Flora of Somalia 4: 1-298. The Royal Botanic Gardens, Kew.
  • Timberlake, J.R. & Martins, E.S. (eds.) (2009). Flora Zambesiaca 12(2): 1-208. Royal Botanic Gardens, Kew.
  • Van Steenis, C.G.G.J. (ed.) (1955-1958). Flora Malesiana 5: 1-595. Noordhoff-Kolff N.V., Djakarta.
  • Wood, J.R.I. (1997). A Handbook of the Yemen Flora: 1-434. The Board of Trustees of the Royal Botanic Gardens, Kew.

Literature

Kew Backbone Distributions

  • Andrews, F.W. (1956). The Flowering Plants of the Sudan 3: 1-579. T.Buncle & co., LTD., Arbroath, Scotland.
  • Barthelat, F. (2019). La flore illustrée de Mayotte: 1-687. Biotope éditions.
  • Boulos, L. (1995). Flora of Egypt Checklist: i-xii, 1-287. Al Hadara Publishing, Cairo.
  • Danin, A. (2004). Distribution Atlas of Plants in the Flora Palaestina area: 1-517. The Israel Academy of Sciences and Humanities, Jerusalem.
  • Davis, P.H. (ed.) (1984). Flora of Turkey and the East Aegean Islands 8: 1-632. Edinburgh University Press, Edinburgh.
  • Dobignard, D. & Chatelain, C. (2010). Index synonymique de la flore d'Afrique du nord 1: 1-455. Éditions des conservatoire et jardin botaniques, Genève.
  • Edwards, S., Demissew, S. & Hedberg, I. (eds.) (1997). Flora of Ethiopia and Eritrea 6: 1-586. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
  • Güner, A. (ed.) (2018). Resimli Türkiye Floras? (Illustrated Flora of Turkey) 2: 1-1054. ANG Vakf?/Nezahat Gökyi?it Botanik Bahçesi, Istambul.
  • Karthikeyan, S., Jain, S.K., Nayar, M.P. & Sanjappa, M. (1989). Florae Indicae Enumeratio: Monocotyledonae: 1-435. Botanical Survey of India, Calcutta.
  • Short, F.T., Moore, G.E. & Peyron, K.A. (2010). Halophila ovalis in the tropical Atlantic ocean Aquatic Botany 93: 141-146.
  • Simpson, D. (1989). Hydrocharitaceae Flora of Tropical East Africa: 1-29.
  • Thulin, M. (ed.) (1995). Flora of Somalia 4: 1-298. The Royal Botanic Gardens, Kew.
  • Timberlake, J.R. & Martins, E.S. (eds.) (2009). Flora Zambesiaca 12(2): 1-208. Royal Botanic Gardens, Kew.
  • Tutin, T.G. & al. (eds.) (1980). Flora Europaea 5: 1-452. Cambridge University Press.
  • Van Steenis, C.G.G.J. (ed.) (1955-1958). Flora Malesiana 5: 1-595. Noordhoff-Kolff N.V., Djakarta.

Flora of Somalia

  • Flora Somalia, Vol 4, (1995) Author: by G. Sartoni [updated by M. Thulin 2008]

Flora of Tropical East Africa

  • Asch. & Guerke, A. Engler & K. Prantl, Die Natürlichen Pflanzenfamilien 2, 1: 249, fig. 183 (1889).
  • Asch. in Sitz. Ges. Nat. Freunde Berlin 1867: 3 (1867).
  • Hartog, Sea Grasses of the World: 258, fig. 63 (1970).

Flora of Somalia
Flora of Somalia
http://creativecommons.org/licenses/by-nc-sa/3.0

Flora of Tropical East Africa
Flora of Tropical East Africa
http://creativecommons.org/licenses/by-nc-sa/3.0

Herbarium Catalogue Specimens
Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

Kew Backbone Distributions
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

Kew Names and Taxonomic Backbone
The International Plant Names Index and World Checklist of Selected Plant Families 2021. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
© Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0