200 Lake Maxinkuckee, Physical and Biological Survey 



In a tamarack marsh near Lake of the Woods, Ind., in 1909, 

 quite a number of the intermediate fronds, where the foliaceous 

 fronds are more or less contracted and spore-bearing, were ob- 

 served. 



5. CLAYTON'S FERN 



OSMUNDA CLAYTONIANA L. 



This fern very closely resembles the preceding in general ap- 

 pearance and habits, and grows even somewhat taller. During the 

 fruiting season they are easily distinguished. In this species the 

 spores are borne on some of the middle pinnae of foliaceous leaves, 

 the pinnae bearing the spores being much contracted and brown. 

 It does not appear to be so common about the lake as the preceding. 

 Some plants were found in the low-ground marsh along the road 

 west of Farrar's. 



Family 3. Polypodiace^e. Fern Family 

 6. sensitive fern 



0NOCLEA SENSIBILIS L. 



This fern is quite common in the vicinity of the lake, especially 

 in flat, moist, rather open, places. It grows most abundantly and 

 bears fruit to the greatest perfection in a swamp at the edge of 

 Zechiel's field, across the railroad from the birch swamp. It was 

 also observed in Green's marsh back of Long Point. It was well 

 up in leaf by May 12. Spores were well ripened by September 18 

 and dead ripe September 27. 



7. BRITTLE FERN 



FILIX FKAGIL1S (L.) Underw. 



This bright green delicate fern, which is usually quite common 

 throughout the state in grassy open places at the edges of wood- 

 lands, is not very common near Lake Maxinkuckee. A few plants 

 were found at the edge of Culver's woods northeast of the lake, 

 near where the road approaches the shore. 



8. CHRISTMAS-FERN 



POLYSTICHUM ACROSTICHOIDES (Michx.) Schott 



Not especially common in the neighborhood of the lake. A few 

 plants occur on a bank in Overmyer's woods. It also clothes the 

 steep sides of the steep gully northeast of the lake known as the 

 canon. It appears to have no special time for fruiting, as fertile 

 fronds can be found through the year. 



