PLATYZOMA. 



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, 

 cucullate pinnaB (hood-shaped leaflets) of a leathery texture, scarcely t^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'-nri-a. See Nephrodium. 



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



PCESIA— Pce'-si-a. See Pteris. 



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



