Lake Maxinkuckee, Physical and Biological Survey 187 



muck and sand, and rarely extends in water deeper than 18 inches 

 or two feet. Where the bottom is level and shallow it will extend 

 out into the lake considerable distances, but where there is more 

 slope to the shore the belt is narrow. At Long Point a little grows 

 on the shore ; as also south of Green's. It grows in a swamp back 

 of the ice-beach south of the lake. On the springy hill south of 

 the lake a little patch grows on land quite a way back from the 

 lake, while in a low, flat springy field along the lake near the Culver 

 Military Academy grounds (across the road from the lake) there 

 is a great continuous patch of this plant. Like the great bulrush, 

 S. validus, and like the various species of Eleocharis, this plant 

 spreads by means of rootstocks and proceeds out into the water in 

 more or less straight rows. In the autumn the part above water 

 gradually dies and turns brown, but the portion under water stays 

 green all winter. It had begun to look dead and brown by Septem- 

 ber 28, 1900. 



By May 5, 1901, it began to show in the bottom near shore as 

 exceedingly short stubble; it soon showed up well and green at 

 the edge of the lake; by May 25 the flower buds showed, and by 

 June 7 it was in flower, though short (6 inches) in the lake. 



A large patch of this species was observed on a bar at the edge 

 of Tuttle's Island in the Auglaize River a few miles above Defiance, 

 Ohio, all or nearly all of the culms of which were markedly spiral, 

 and the patch as a whole presented a remarkable aspect quite un- 

 like anything else that comes to mind, especially when the wind 

 swayed them slightly and the masses of light and shade ran up 

 and down them in a fantastic manner. There was something at- 

 tractively tipsy in the appearance of the group, and this form, if it 

 remained fixed, would be a valuable addition to parks containing 

 ponds or lakes. 



41. STIFF WHITE WATER CROW-FOOT 



BATRACHIUM TRICHOPHYLLUM (Chaix) 



Rather common in the lake near shore from the Ice-houses 

 north to Culver ; also common in Lost Lake near shore south of the 

 Bardsley cottage. Some also found by the green boathouse. In 

 flower in Lost Lake, June 8, 1901. The plants are many of them 

 washed out by the high waves of autumn, but they strike root 

 again. The leaves stay green all winter. Frequently in late au- 

 tumn the plants are covered, as are most of the plants of the lake, 

 by a thick growth of diatoms. Of recent years this species has in- 

 creased in abundance and is now common along the shore south of 

 the Ice-houses and in the neighborhood of Chadwick's pier. 



