408 



THE BOOK OF CHOICE FERNS. 



A. p. angustatum — an-gus-ta'-tum (narrow), Brachenridge. 



The fronds of this variety are of thinner texture, ligulate (strap-shaped), 

 about 1ft. long by fin. broad, and borne on stipes (stalks) 6in. long. — 

 Hooker, Synopsis Filicum, p. 393. 



A. p. parvulum — par'-vul-um (rather small), Blume. 



This only differs from the foregoing species, of which it no doubt is 

 a variety, through its fronds being shorter and also narrower. — Hooker, 

 Synopsis Filicum, p. 393. 



A. Polytaenium — Pol-yt-ae'-ni-uoi (having many ribbons). Synonymous 

 with A. lineatum. 



A. pumilum — pu'-mil-um (small). A synonym of A. immersum. 



A. reticulatum — re-tic-ul-a'-tum (netted), Kaulfuss. 



A stove species, native of the Himalayas, Ceylon, and the Malaccas, 

 extending to Aneitum and Queensland. Its fronds, Gin. to 15in. long, ljin. 

 to 2in. broad, and showing scarcely any midrib, are broadest about one-third 

 of the way down ; their extremity is sometimes blunt and at other times 

 sharply pointed, but their lower part is very gradually narrowed to the base, 

 where it terminates in a short, compressed stem. The areola? (distinctly 

 marked-out spaces on the surface of the fronds), although several inches 

 long, are only j^in. to ^in. broad ; they are very distinctly raised on the 

 upper surface. The sori (spore masses), equally raised above the surface of 

 the fronds, are copious and often united. — Hooker, Species Filicum, v., p. 169. 

 Beddome, Ferns of Southern India, t. 231. 



A. semicostatum — se-mic-os-ta'-tum (half-ribbed), Blume. 



This somewhat strong-growing, stove species, also known as A. latipes, 

 is a native of Ceylon, the Malacca, Philippine, and Polynesian Islands. It 

 produces fronds fully ljft. long and 3in. to 4in. broad, broadest about one- 

 third of the way down, narrowed to a sharp point at their extremity, and 

 very gradually narrowed to the base into a short stem ; their edge is entire, 

 and they are provided in their lower half with a distinct, blackish midrib. 

 Their central areola3, often 3in. long, are seldom more than Jin. broad, and 

 the sori (spore masses), often united and copious, are raised well above the 

 surface of the fronds. — -Hooker, Species Filicum, v., p. 168. 



