18 



A new Aspidium from Liukiu Island. 



By 



Tomitaro Makino. 



Assistant of Botany in the College of Science, Imperial University, Tokyo. 



Aspidium (Polystichum) yaeyamense sp. nov. 



Aspidium {Polystichum) sp. Makino Mr. H. Kuroiwa's Collections 

 of Lmkm Plants n. 23, in Bot. Mag. Tokyo. IX. p. 255. 



Km) ™' ^ Ya ^ ama - torano ° ( Y - Tasbiro). -P^i«&©*(W^S 



Gaudex very short, oblique 

 triquetrous at the base, much 



the above; the scales subulate-lanceolate, redish-brown, thin, ucu 

 cordate at the base, the margins minutely toothed, often loosely ciliated 

 at the lower portion. Fronds pinnate, linear, rather lone-attenuate to- 

 wards the apex, 5-14 cm long §-l§ cm broad; rachis slSnder, filiform, 

 somewhat scaly, grooved on the upper surface ; pinnce alternate numer- 

 ous all erect-patent, ovate-oblong, nearly falcate, with an acute apex, 

 5-12 mm long, 21-5 mm broad, naked but with a few minute scales on 

 he under surface, somewhat prominent at the certain points of the upper 

 surface, which correspond the points of attachment of the sori on the 

 under surface, the upper edge grossly serrate, with a serrated lobe at the 

 basal -Portion whose inner margin is obliquely paralleled to the rachis 

 and attenuated with the basal portion of the lower edge into a short 

 petiole the lower edge serrate towards the apex, occasionally divided 

 so as to form a small lobe at the well developed inferior pinna* ; the 

 midrib slightly curved and flexuoos in a small degree ; veins free, 

 erect-patent, pinnate ; veinhts forked or pinnate, but simple at the 

 upper ones Soy small arranged in two rows and each iitrntl,,! ,,. 

 the extremity of the lowest inner branch of the vein ; indusium 

 membranaceous, peltate, with a short pedicel, suborbicular, an-nlar. 

 deciduous; sporangia pedicellate, compressed, rounded; ring vertical 

 conspicuous. ' J 



Hab. Liukiu: Yaeyama (Y. Tashiro ! Aug. 1887); Naka, 

 Inomote-zima {H. Kuroiwa! Aug. 14, 1892. No. 20). 



An allied species to Aspidium auriculatum Swartz, which 

 tnbuted from British India to Formosa, a new Japanese domin 



