slAas. 



Fi.xn 3. — 1, Brittle Bladder fern. A, Fart of FiAniile of do., enlarged, a, 3, 

 Varieties of do., Qgriopieri* Dentata and CygtopterU IHckieana, 4, Itady Fenic 



5, Finniile of do., enlarged. 6, Common Harf a Tongue. C, Seed-Tessel of do. 



6, Hard Fern. D, Lobe of do. 



Burxounded by barren frondB, that droop or lie flat on the 

 ground. The former are about twelve inches high, and deeply 

 pinnatifid ; the latter are about half as long again, and the lobes 

 are broader. The sori are linear, on either side of the midrib 

 of the lobes of the fertile fronds, which decay and disappear ia 

 winter, while the barren fronds are evergreen. It is sometimee 



52 817 



