Cymodocea?^ NatadecS. T^JJ 



simple, erect, 2-3-leaved ; 1. 4-8 by \-l in., lorate, straight, or 

 very slightly falcate, tip rounded, toothed, margins quite 

 entire, midrib very slender, veins about 7 pairs, with few 

 distant cross venules, sheath as broad as the blade, |-i in. 

 long, flat, with narrowly incurved sides, hyaline, ligule very 

 narrow; fl. and fr. not seen in Ceylon specimen. 



In shallow sea-water ; rather rare. Trincomalie (Harvey) ; Galle 

 (Ferguson); Karativu I.; Mannar. There are specimens in Mus. Brit, 

 collected by Kcenig, and labelled ' Thalassia reptans^ Fretum zeylanicum 

 prope Fundi.' It is abundant in the shallows of the Pamban channel 

 iDetween Ramisseram I, and the Indian coast. 



On shores of Indian and S. Pacific Oceans and S. Australia. 



Extremely similar in foliage to Thalassia Hemprichii. 



C. ciliata, Ehrenb. I have entered this in Syst. Cat. Ceyl. 99 (with a 

 doubt) as its range is made to extend here in Ascherson's map (Peter- 

 mann's Geogr. Mitth. 1871), but I have seen no specimen. In Fl. B. 

 Ind. the Ceylon localities for C. serrulata are inadvertently entered 

 under this species. — Trimen. 



2. C. australis, Trim. Syst. Cat. Ceyl. PI. 99 (1885). 



Trim, in Journ. Bot. xxiii. 174, and Syst. Cat. Ceyl. PL 99. 

 Fl. B. Ind. vi. 570. 



Stems very slender, densely interlaced with matted root- 

 fibres ; leafing branches 1-4 in., erect, slender, rooting at the 

 lower nodes; 1. 6-10 by tV-s i"-) narrowly linear, flat, margins 

 quite entire, coriaceous, tip entire or 3-toothed, veins 3 

 obscure, a central and 2 marginal, sheath i in, long; fl. terminal 

 axillary. 



In shallow sea-water; very rare. Only found at W eligama Bay, S. 

 Prov., where it is abundant. 



On coasts of Indian and Pacific Oceans, Malaya, and N. Australia. 



3. C. isoetifolia, Asch. in Lijmaa., xxxv. 163 (1867). 



C. aqiiorea^ Thw. Enum. 333. Trim, in Journ. Bot. xxiii. 174. C. P. 

 2380. 



Fl. B. Ind. vi. 570. 



Stems filiform, densely interlaced, creeping and branching; 

 branches erect, filiform, internodes few, long; 1. terminal 3-12 

 by tV in- broad, semiterete, deeply grooved, spongy within, tip 

 obtuse, sheath i-i^ in., mouth 2-lobed ; fl. in peduncled 

 terminal sparingly dichotomously branched cymes \\-2 in. 

 long, each pair sessile on a short pedicel, enclosed in a 

 membranous spathiform bract about \ in. long, bract with 

 sometinies a short leafy tip ; male fl. not seen ; fem. fl. -x^-\ in. 

 long, consisting of a naked narrow ov. tapering into a much 

 longer, stout, recurved style, stigmatose at the top. 



In shallow sea-water ; rather common. Galle (Gardner) ; Bentota 

 (Ferguson); Weligama; Batticaloa and Puttalam (Nevill); Mannar. 

 Shores of Indian Ocean, Malaya, and N. Australia. 

 Gardner's Galle specimens are in flower. 



