Cymodocea. | CLIII, NAIADACEE (BENNETT). 229 
1. C. ciliata, Zhrenb, ex Aschers. in Sitzb. Ges. Naturf. Fr. Berl. 
1867, 3. Stem 3-12 in. long, woody, branched, covered with annular 
scars. Leaves 3-6 in. by 4-2 in., linear-falcate, tip rounded, ciliate- 
serrulate.—Linnea, 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. 
Zostera ciliata, Forsk. Fl. Augypt.-Arab. 157. 
Nile Land. Shore of the Red Sea at Hanish Island, Slade ! 
Mozamb. Dist. German East Africa: Rovuma Bay, Kirk! Portuguese 
East Africa : at the mouth of the West Luabo River, Kirk, 10! 
Also on the shores of Egypt, Arabia, India, the Mascarene Isles, and Queensland. 
2. C. serrulata, Aschers. & Magnus in Sitzb. Ges. Naturf. Fr. Berl. 
1870, 84. Stems long, creeping. Leaves 4—6 in. by }-4 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 Linnea, xxxv. 162. 
Nile Land. 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. isoétifolia, Aschers. in Sitzb. Ges. Naturf. Fr. Berl. 1867, 3, 
Stem short. Leaves terete, grooved, 3-5 in. by 34;—-7'5 in., glaucous, 
tip 3-toothed.—Flowers in dichotomous cymes.—Linnea, xxxv. 163; 
Durand & Schinz, Conspect. Fl. Afr. v. 501. C. e@quorea, Kunth, 
Enum. iii. 118 (excl. syn.). 
Nile Land. Shore of the Red Sea at Suakin, Schweinfurth, 198! British 
East Africa: Lamu Harbour, Hildebrandt, 1914! 
‘5 Also on the shores of the Red Sea north of the Tropic, and of the Indian 
cean. 
4. C. australis, Zrimen, Cat. Ceylon Pl. 99. Stem long, creeping. 
Leaves 5-7 in. by 4-} in., linear, nearly straight, tip rounded or 
truncate and 3-toothed.—Halodule australis, Mig. Fl. Neder]. Ind. iii. 
227 ; Aschers. in Sitzb. Ges. Naturf. Fr. Berl. 1867, 4; Durand & 
Schinz, Conspect. Fl. Afr. v. 501. Diplanthera tridentata, Steinh, in Ann. 
Se. Nat. sér. 2,ix. 98. Zostera wninervis, Forsk. Fl. Aigypt.-Arab. cxx, 
and 157. 
Wile Land. Eritrea: Massowa, Schweinfurth, 5! Danakil coast, near Hamfila, 
Hildebrandt, 701! 
Also on the shores of Arabia and the Indian Ocean. 
5. ©. nodosa, Aschers. 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. OC. equorea, Konig in Konig & 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. 
