Woodwardia angustifolia
Large, fronds deeply pinnatifid, the fertile taller and more contracted than the sterile. In wet woods near the coast. P. [102].
GROUP IV
FERTILE AND STERILE FRONDS LEAF-LIKE AND SIMILAR; SPORANGIA ON OR BENEATH A REFLEXED PORTION OF THE MARGIN
[The first clause bars out P. gracilis and P. atropurpurea, which otherwise would belong to Group IV as well as to Group III.]
20. BRAKE
Pteris aquilina
Large and coarse, frond 3-branched, spreading, each branch 2-pinnate, sporangia in a continuous line beneath the reflexed margin of the frond. In dry, somewhat open places. P. [105].
21. MAIDENHAIR
Adiantum pedatum