Ci/modocea.] cliii. NAiADACEiE (bennett). 229 



1. C. ciliata, Ehrenh. ex Aschers. in Sitzb. Gea. Naiurf. Ft. Berl. 

 1867, 3. Stem 3-12 in. long, woody, branched, covered with annular 

 scars. Leaves 3-6 in. by J-§ in., linear-falcate, tip rounded, ciliate- 

 serrulate. — Linnaea, xxxv. 162; Durand & Schinz, Conspect. Fl. Afr. 

 V. 500; Schweinf. Beitr. Fl. Aethiop. 292, 309. Thalassia ciliata, 

 Konig in Konig & Sims, Ann. Bot. ii. 97; Kunth, Enum. iii. 120. 

 Zoatera ciliata, Forsk. Fl. ^gypt.-Arab. 157. 



Vile &and. Shore of the Red Sea nt Hanish l%\an^, Slade ! 

 BKozamb. X>lst. German East Africa : Rovuma Bay, KirTc ! Portuguese 

 East Africa : at the mouth of the West Luabo River, Kirk, 10 ! 



Also on the shores of Egypt, Arabia, India, the Maiicarene Isles, and Queensland. 



2. C. serrulata, Aschers. <fc Magnus in Sitzb. Gee. Naturf. Fr. Berl. 

 1870, 8'4. Stems long, creeping. Leaves 4-6 in. by \-\ in., linear, 

 nearly straight, tip entire or denticulate. — Posidonia serrulata, Spreng. 

 Syst. i. 181. Phucagrostis ciliata, Ehrenb. & Hempr. Symb. Bot. t. vi. 

 ex Aschers. in Linnaea, xxxv. 162. 



irile Iiand. Shore of the Red Sea at Suakin, Schweinfurth, 197 ! 

 Shores of the extra-tropical part of the Red Sea, and of the Indian and Pacific 

 Oceans. 



3. C. \soet\fo\i2iy Aschers. in Sitzb. Ges. Naturf. Fr. Berl. 1867, 3, 

 Stem short. Leaves terete, grooved, 3-5 in. by yV-yV ^'^•j glaucous, 

 tip 3-toothed. — Flowers in dichotomous cymes. — Linnsea, xxxv. 163; 

 Durand & Schinz, Conspect. Fl. Afr. v. 501. C. cequorea, Kunth, 

 Enum. iii. 118 (excl. syn.). 



IVlle Ziand. Shore of the Red Sea at Suakin, Schtneivfurth . 198! British 

 East Africa : Lauiu Harbour, Hildehrandt, 1914 I 



Also on the shores of the Red Sea north of the Tropic, and of the Indian 

 Ocean. 



4. C. australis, Trimen, Cat. Ceylon PI. 99. Stem long, creeping. 

 Leaves 5-7 in. by -^-J in., linear, nearly straight, tip rounded or 

 truncate and 3-toothed. — Halodule australis, Miq. Fl. Kederl. Ind. iii. 

 227 ; Aschers. in Sitzb. Ges. Naturf. Fr. Berl. 1867, 4 ; Durand k 

 Schinz, Conspect. Fl. Afr. v. 501. Diplanthera tridentata, Steinh. in Ann. 

 Sc. Nat. ser. 2, ix. 98. Zostera uninervis, Forsk. Fl. ^gypt.-Arab. cxx. 

 and 157. 



Iffile Ziand. Eritrea : Massowa, Schweinf urth, 5 ! Danakil coast, near Hamfila, 

 Hildebmndt, 701 ! 



Also on the shores of Arabia and the Indian Ocean. 



5. C. nodosa, Asc/iers. in Sitzb. Ges. Naturf. Fr. Berl. 1869, 4. 

 Rhizome purple, thick, creeping. Leaves narrowly linear, 7-nerved, 

 denticulate upwards. Male flowers long peduncled, larger than the 

 leaves. Carpels half-ovoid, slightly keeled, entire or indistinctly 

 repand. — Boiss. Fl. Or. v. 21. C. cequorea, Konig in Konig k Sims, 

 Ann. of Bot. ii. 96, t. 7. Zostera serrulata, Targ.-Tozz. Cat. Veg. Mar. 90. 



Upper Guinea. Mouths of rivers, Senegambia (ex Boissier). 

 Shores of the Mediterranean Sea and the Canaries. 



