GENERA OF FERNS, 387 
can find no decisive character that will distinguish Copto- 
phyllum from Mohria ; their habit being the same, departing 
slightly from true Mohria by the fertile fronds being more 
strictly contracted; although instances are not wanting of 
fronds of both genera exhibiting more or less contraction of 
parts. A slight difference is also perceptible in the form of 
the sporangia, but it is no more than what may be expected 
from the normal contraction of the frond as compared with 
Mohria. 
134. ANEMIDICTYON, J. Sm. 
(Anemiz sp. Sw. et auct.) 
Fertile fronds tripartite; the two opposite segments con- 
tracted, erect, constituting two unilateral sporangiferous com- 
pound panicles, the third segment sterile. Veins forked ; 
Venules reticulated; Sporangia oval, vertical. 
Fronds sipitate, pinnate; pinnae entire ovato-lanceolate. 
Species. 1. A. Phyllitidis. Sw. (A. longifolia, Radd. A. cor- 
difolia, Presi). 2. A. fraxinifolia, Radd. 3. A. densa, Link. 
Jllust. Hook. Gen. Fil, t. 103. Presl, Relig. Haenk, t. 11, 
^S 
135. Mouria, Sw. J. Sin. 
(Osmunde sp. Linn. Anemiæ sp. Sw. Hook. Coptophyllum, | 
Gard.) zi e 
\ Fertile fronds uniform, contracted, usually constituting a 
rachiform unilateral sporangiferous panicle; margin of the 
segments inflexed. Veins direct, free. Sporangia sessile, 
vertical, oval or nearly globose. 
Fronds cespitose, rising from a short creeping rhizoma, 
erect, 6 to 10 inches high; the sterile bipinnate ; pinne entire, 
laciniate or multifid, segments linear, dichotomous. 
Species. 1. M. thurifraga, Sw. 2. M. crenata, Desv. 
3. M. intermedia, J. Sm. (Anemia intermedia, R. Br. in 
Herb. Brit. Mus. Osmunda bipinnata, Linn. herb. exclusive 
