July m-2A T. MAK'TNO-OBSERVATTONS ON THE FLORA OF JAPAN. 



211 



Cymodocea (Amphibolis) asiatica Makino, sp. nov 

 (Fig. xvir.) 



Perennial, not robust. Rhizome creeping, hypog^eous, 

 slender, terete and striate, about 2 mm. across, with nodes 

 which are hardly prominent, rooting, subligneous and leather- 

 coloured when dry; internodes long, about 3-4 cm. long ; 

 branches one to each node, erect, very short, about 1 cm. or a 

 little more long, ending a tuft of leaves at the top, often loose- 

 ly 1- or 2-cicatrisate, subligneous when dry ; roots one or 

 two to each node, long-, 

 terete, with branchlets except 

 the basal portion, attaining 

 about 12 cm. in lensth 

 Leaves about 3 and tufted 

 at the top of branches, close- 

 ly placed and alternate, 

 clasping each other with 

 convolutely inflexed-margin- 

 ed sheaths, sessile, 2-seriate ; 

 sheath light leather-coloured, 

 cuneate, complanate, con- 

 tracted towards the base, 

 separated from the lamina 

 by a ti-ansverse line, mem- 

 branaceous, about 13-22 

 mm. long, about 8 mm broad 

 but about 14-15 mm. broad 

 when laid open, longitudinal- 

 ly subnumerous-nerved and 

 with very loose delicate 

 transverse venules between 

 the nerves, very thin and 



subhyaline and looser-ner- ^^^- ^VJI. 



vate towards the entire mar- "' ^^^S^y mognifer/. b, magnified. 



gin, truncate with a short free transversely narrow entire 

 enerved subhyaline ligule, which is produced and auriculate 

 into a small cuspidate tip at the both sides ; that of the inner- 



