July, 1021.1 OG UBA .— GAPS OF STELE IN POL YPODIACEAE. 



119 









also same with the latter in the diagram the departing point is 

 marked with O). 



Diplazium Wichiirae (Mett.) Diels. Creeping rhizome with 

 closely or loosely arranged leaves. Foliar arrangement is Va clock- 

 wise, and the stelar construction is the same with ihat of Athyrium 

 nipponicum, the only difference being in that two foliar traces depart 

 from both sides of a gap independently at the part pretty behind 

 the next gap (Fig. 2, A ; marked with x ). 



Dryopteris decursivo-pinnata. 

 (Hali.e.) Kze. Almost erect rhi- 

 zome with very crowded leaves. . 

 This has Ys counterclockwise phyl- 

 lotaxy, and two foliar traces 

 depart from a gap in the part 

 pretty behind the next gap (Fig. 

 2, B; marked with X ), so that 

 the stelar construction is quite 

 contrariwise to the abovemention- 

 ed species. 



Coniogramtne fraxinea (Don.) 

 Diels. Large creeping rhizome 

 with long internodes. The con- 

 struction of the stele is similar to 

 the preceding, only differing in 

 that, the departing parts of leaf- 

 traces are sitxiated somewhat 

 anterior to those in the preced- 



•:•.:':: v.-.-.k; 



..x. 



y-^-r 



ZMm^ 



B 



'-...., ^v a -' 



Fig. II. Developing figures of 

 steles with transverse commissure, 

 the phyllotaxy being -| clockwise (A) 

 or counterclockwise (B). The depart- 

 ing points of foliar traces ara also 

 marked (details in text). 



ing species (Fig. 2, B ; marked with A). 



Polystichum lepidocaulon (Hk.) Sm. Creeping rhizome usually 

 with crowded leaves, showing Yg clockwise arrangement. Though 

 the construction of the stele is similar to that of Athyrium nipponi- 

 cum, foliar traces in every gap is three, one departing from the 

 bottom of the gap, two from the part as Diplazium Wichurae (Fig. 

 2, A ; marked with O & X ). 



Polystichum aculeatum (L.) Sch. var. japonicum Chr. Oblique 

 rhizome with very crowded leaves. Construction of the stele is 

 similar to the preceding. Among three traces two are situated slightly 

 anterior to the case of the above mentioned species. (Fig. 2, A; 

 marked with O & A). 



Dryopteris africana (Desy.) Chr. Creeping rhizome with leaves 



