PLATYZOMA. 83 



to 12in. long and simply pinnate (only once divided to the midrib) ; these 

 are borne on tufted, stiff, upright stalks, and are furnished with small, 

 cucuUate pinnae (hood-shaped leaflets) of a leathery texture, scarcely j^^in. long. 

 The sori (spore masses) consist of a few stalkless capsules mixed with a 

 substance of a powdery nature, which arise from the extremity of the simple 

 veinlets, and are concealed by the singularly revolute margins of the leaflets. 

 — Hooker, Species Filicum., i., p. 2. Nicholson, Dictionary of Gardening, iii., 

 p. 159. 



PLECOSORUS MEXICANUS— Plec-os-o'-rus mex-ic-a -nus. See 

 Cheilanthes speciosissima. 



PLEOCNEMIA— Ple-oc-ne'-mi-a. See Nephrodium. 



PLEUROGRAMME — Pleur-og-ram'-me. See Monogramme. 



PCESIA— Poe'-si-a. See Pteris. 



POLYBOTRYA— Pol-yb-ot'-ry-a. See Acrostichum. 



G 2 



