Harper : Some Alabama plants 525 



which headed near the station, and after going a little over a mile 

 found a group of four trees on the steep bank of the branch. On 

 my return to the station with the desired specimens I was told 

 further that the species extends down the same stream about 

 twenty miles (which would bring it almost to the Mississippi 

 line), and that some of the specimens are three or four feet in 

 diameter. 



Tsnga canadensis is known from only two other counties in 



Mohr,* and Jackson, where M 



J 



few years ago. f All of the Alabama stations are on the sandstone 

 rocks of the Coal Measures, and not far from 1,000 feet above 

 sea-level. 



Taxodium distichum (L.) Rich. 



It was quite a surprise to find this tree growing on granite 

 rocks along and in the shoals of the Tallapoosa River for a mile or 

 two above the fall-line at Tallassee, amid typical Piedmont region 

 scenery, with not a trace of any coastal plain deposits in sight ; for 

 it is almost confined to the coastal plain, and to calcareous forma- 

 tions. I measured one specimen 33 inches in diameter above the 

 enlarged base. With it were several other species of somewhat 

 similar distribution, but I did not have time to ascertain how far 

 up the river any of them extended. To explain their occurrence 

 there will require a knowledge of some details of geological history 

 which are as yet unwritten ; but the plants themselves may be 

 expected to furnish important clues when the laws of their distri- 

 bution are better understood. 



Scirpus carinatus (H. & A.) Gray 



Mohr 



but last spring I found it to be a common weed along damp road- 

 sides, etc., in or near Tuscaloosa, Auburn, Tuskegee, Prattville, 

 Elmore, Clanton and Maplesville. It flowers in April, and is 

 probably more difficult to recognize at other seasons of the year. 

 It is evidently introduced, and its natural range is yet to be deter- 

 mined. 



* See his remarks on this species on pages 34 and 72 of his Plant Life of Alabama 

 fBiltmore Bot. Stud. 1: 154. 1902. 



