A. crenatum — Readham

(crenated).* sti. 6in. to 9in. long. fronds with a terminal central pinna 6in. to 9in. long and several large erecto-patent lateral ones on each side, the lowest of which are branched again; segments about ½in. long, ¼in. deep, dimidiate, the lower line upcurved, the upper nearly straight, slightly crenate. sori numerous, round, placed on the upper and sometimes outer edge. This is closely allied to A. tetraphyllum. Mexico. Stove species. S YN. A. Wilesianum. IMG:7081556231692414330_i_025b.jpg: F IG . 27. A DIANTUM DECORUM .