Field Guide to Seagrasses of the Red Sea - Seagrass-Watch

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Serrated leaf tip Ribbon leaf blade Close-up area Smooth rhizome Flat “V” shape leaf sheath Fibrous root on shoot (Plate 2) Mag. 20x Leaf scars (Plate 1) Mag. 20x Spine on leaf tip Fibrous root on shoot V shape leaf sheath Close-up area Open leaf scars Serrated leaf tip (Plate 3) (Plate 4) (Plate 5) Mag. 2x (Plate 6) 18
Halodule pinifolia (Miki) den Hartog Halodule pinifolia (Plate 1) is known from the southern Egyptian coast (El Shaffai, 2011), but is probably more widespread in suitable habitat. As Halodule pinifolia is morphologically very similar to Halodule uninervis, it has probably been reported as the latter in many places. It is not always easy to differentiate between the two species. Indeed Waycott, et al., (2004) reported that Halodule pinifolia is genetically identical to Halodule uninervis. Morphology Leaf The leaf blade is less than 20 cm long and 0.02-0.1 cm wide, linear and flat. The leaf sheath is well developed and there are three longitudinal leaf veins. Leaf margin is mostly smooth but finely serrated at the tip. The most distinctive feature is the black central vein at the leaf tip, which splits into two at the apex. Stem The stem of this species is short, erect, vertical and bearing 1-2 leaves. It is Field Guide to Seagrasses of the Red Sea 19
Page 1: Seagrasses Field Guide to of the Re
Page 4 and 5: The designation of geographical ent
Page 7: Foreword The role of taxonomy in un
Page 10 and 11: viii
Page 12 and 13: history. Peter Forsskål, a Swedish
Page 14 and 15: Figure 1. Schematic map represents
Page 17 and 18: Shallow coastal habitat Seagrass me
Page 19 and 20: Bay (or Sharm) A Sharm is the Arabi
Page 21 and 22: An individual seagrass plant consis
Page 23 and 24: Cymodocea rotundata Ehrenberg & Hem
Page 25 and 26: Leaf tip Close-up area Two tips on
Page 27: Microscopic Leaf Anatomy Cells are
Page 31 and 32: Leaf blade Close-up area Leaf sheat
Page 33 and 34: Stem The stems are short, erect and
Page 35 and 36: Syringodium isoetifolium (Ascherson
Page 37 and 38: Cylindrical leaf blade Close-up are
Page 39 and 40: Microscopic Leaf Anatomy Cells are
Page 41 and 42: Wide flat leaf sheath Leaf scars on
Page 43 and 44: Enhalus acoroides (L.f.) Royle Enha
Page 45 and 46: Leaf blade Mag. 20x Close-up area (
Page 47 and 48: Microscopic Leaf Anatomy Cells angu
Page 49 and 50: Halophila ovalis (R. Brown) Hooker
Page 51 and 52: Dark colored dots Close-up area Ova
Page 53 and 54: Rhizome The rhizome is smooth, thin
Page 55 and 56: Halophila stipulacea (Forsskål) As
Page 57 and 58: Leaf blade Mid vein Lopsided leaf s
Page 59 and 60: Microscopic Leaf Anatomy Cell shape
Page 61: Glossary Bullose: bulb-shaped or bu
Page 64 and 65: Lipkin, Y. (1977). ‘Seagrass vege
Page 66: About the Guide This guide answers

Field Guide to Seagrasses of the Red Sea - Seagrass-Watch

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