AN ENUMERATION OP CULTIVATED PERNS. 263 
plicate, each bearing on its inner side four rows of sessile, oval 
sporangia, attached by their base and opening vertically. 
Genus 147.— Portion of fertile frond, natural size ; spikeret 
enlarged. No. 1. 
1. A. digitata, Wall. Schizaea digitata, Sw. ; Hook. GarcL 
Ferns, t. 49. — East Indies ; Malayan, Philippine, 
and Fiji Islands. 
Tribe II — OSMUNDE51. 
Sporangia globose, reticulated, short-pedicellate, oblique and 
gibbous at the apex, opening by a vertical slit, sub-bivalved. 
Bing incomplete or obsolete. 
148. OSMUNDA, Linn. 
Vernation fasciculate, erect, subarboreous. Fronds pinnate 
or bipinnate, 3—10 feet high ; pinna; articulated with the rachis. 
Veins forked ; venules free. Fertile fronds wholly, or the upper 
or middle portion, contracted, forming simple or compound 
sporangiferous panicles. 
