― 147 ―' 



Apoglossum violaceum (Harv.) J. Ag. 



Norn. Jap.: Numelui'tiori. 

 PL, XXXI, Fig. 1-8； PL. XXXII, Fig. 13-17. 



Apoglosstivi violaceum J. Ag, Sp. III. 3 (1893) {Noiuen) ； De Toni 

 Syll. A\g. IV, p. 700 ； m 村， 日本 藻類 名^, p. SQ.—Deksseria violacea J. 

 Ag. Epicr. p. 492 ； De Toni Phyc. Jap. nov. p. 29. —― Deles sen a serrulata 

 Harv. in Perry Exp. to Jap., Bot., Append, p. 331 ： Kuetz. Tab. Phyc. 

 XIX， t. 12， f. a-b. 



Plant furnished with a simple primary percurrent frond standing 

 from an expanded disc, midribed and broadly winged, the lower portion 

 altered into a thick subcylindrical stem (2-3 mm. in di 細.) for a shorter 

 or longer extent by denudation of the wings. It attains usually a height 

 or oO cm. or more. Ramification 3-4 times alternately pinnate by repeated 

 proliferations from both sides of the midrib on both surfaces, and some 

 of them elongate into main branches. Branches are often excessively 

 produced. Branches of every order linear-lanceolate tapering into a fine 

 point from narrowed base and furnished with a thick prominent midrib 

 which is thickly corticated. Membranes are very thin and delicate, 

 traversed by reticulated veinlets with undulato-serrulated or irregularly 

 denticulated margins, and those on lower portion of frond furnished with 

 minute prickle-like branched processes on both surfaces. They are often 

 broader than 10 mm. at the primary frond, gradually becoming narrower 

 above. 



Sort are linear, being produced along the thickened median portion 

 of ultimate and penultimate proliferations which are transformed into 

 leaflets like sporophylls ； they are not produced by confluence of those 

 formed along both sides of the midrib. Sporangia are transformed from 

 a cell produced as a branch of an infra-cortical cell which is derived 



