267 — 



P. zosterifoliiis Schum. 



- oxyphyUus Miq. 



- ochreatiis Kaoul. 



P. acutifolins Lk. 

 - i:>oly(jonHS Cham. 



tn inn sn, sn^ 



Fig. 5. P. zosterifolins (c. 12:1); A, the u])pennost part of a general leaf; 



mn, sn, sn,, tn, vascular bundles; s, bast bundles; rs, bast bundle along the 



edge. — jB, the upj)eruiost part of a leaf of a propagating winter bud. 



15. P. pectinatus -group. Leaves all linear, submerged, with 

 sheath, with 1 — 5 nerves of vascular bundles, without interjacent 



