250 GRAMIKE.E. 



Our plant differs from its allied species L. guyanensis in wanting male 

 flowers and in other not very important points. 



Sagittaria LINN. 



Sagittaria pygmaea MIQ. Prol. Fl. Jap. p. 138. "Folia lineari-sukspa- 

 thulata, parte suprema paullo latiore acutiuscula trinervula laminam pro pariam 

 fere referente. Scapus folia vix superans subumbellato-paucifloms monoicus, 

 floribus masc. cum fern, sessili vulgo geminis graciliter pedunculatis, axis conti- 

 nuatione tanquarn tertio pedicello apice paucifloro (masc. ?) ; fl. masc. circiter 



12-andri." 



HAB. Bioritsu: Taiko, leg. Y. SHIM ADA, Aug. 1907, (Xo. 4208). 



Compared with a Japanese specimen in the Tokyo herbarium. Our plant 

 accords tolerably well with the original description of MIQUEL. Leaves of the 

 species have no blade, but petiole broadened like a phyllode. It is, to some 

 extent, comparable with Sagittaria sagittifolia and may be regarded as a variety 

 of the latter. In my opinion, however, it is more reasonable to regard our plant 

 as specifically distinct from S. sagittifolia, as this form wanting leaf-blades is 

 pretty constant and is always found to have sessile female flowers. 



Gramineee. 



Pliyllostachys SIEB. et Zucc. 



Phyllostachys Makinoi HAYATA sp. nov. Phyllostacliys bambusoides 

 HACKEL in Bull. Herb. Bois. VI. (1904) p. 529, (noii SIEB. et Zucc.) ; MATSOI. 

 Ind. Fl. Jap. II-l, p. 92, pro parte ; MATSUM. et HAYATA Enum. PL Formos. p. 

 549. Arborescens 10-20 m. alta ; culmus rectus in specimine adulto nostro ad 

 1m. altitudinem baud sulcatus in sectione perfecte circularis 6.5cm. in diametro 

 in exsiccato pallido-fulvescens. Merithallium (internodium) in specimine ipse 

 16 cm. longum. Lignum 8 mm. crassum. Canalis medullaris 47 mm. in dia- 

 metro. Nodus tenuiter prominens. Inferior pulvillus tennis 1 mm. elevatus acute 

 annularis. Cicatrix vaginas hand conspicua. Superior pulvillus tenuissimus hand 

 distinctus obtusissimus sensim elevatus a pulvillo inferiore 5 mm. distans. 

 Culmus rami hornotini facie cera alba complete obtectus. Squama bicarinata 

 ramum vel ramulum semi-amplectans in specimine nostro oblongo-ovata char- 

 tacea pallido-fulvescens ISmm.^longa 7mm. lata apice obtusissima basi ra- 



