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Conestoga eastward for more than sixty miles to the valley of 

 the Tacony — embracing the drainage of both the Susquehanna 

 and the Delaware Rivers. 



Since that time, besides several new stations near Philadelphia, 

 a number of interesting occurrences of the species have been 

 noted, some of considerable importance and representing range 

 extensions of many miles northward. 



May 27, 1914, the plant was found on the Coastal Plain of 

 New Jersey. This was of notable interest as all the previously 

 known localities in the Philadelphia region had been in the Pied- 

 mont area of southeastern Pennsylvania. Curiously enough I 

 had been exploring the steep wooded slopes of Rancocas Creek 

 in the vicinity of Vincentown, Burlington County, New Jersey, 

 because of their already recognized richness in types more char- 

 acteristic of the Pennsylvania uplands than the Atlantic Coastal 

 Plain. Among numerous interesting discoveries there, was a 

 colony of several large stools of C. aggregata — a species previously 

 unknown in the state. 



During a preliminary examination of the region in Berks 

 County, Pennsylvania, selected for the 191 5 joint Symposium 

 of the Torrey and the Philadelphia Botanical Clubs, an important 

 new station was found June 27 on the southerly edge of the Irish 

 Mountains in the valley of Beaver Creek near Lobachsville. 

 July 5 of the Symposium week at Fleetwood the plant was 

 discovered just outside the village.* 



Mr. Mackenzie, in explorations along the Delaware River, 

 June 19 of the past season, extended the range of the species to 

 Milford, Hunterdon County, New Jersey — the most northern 

 station yet known. As at the two northern stations in Berks 

 County, it is here also to be noted as rare. 



The local distribution of the plant in the Philadelphia region 

 makes it quite clear that this is an austral species pushing up 

 the larger river valleys, on the northern edge of its range. In its 



* The long, very lax culms, additionally weighted by the spikes of mature fruit, 

 were bent far over and many of the heads quite hidden among the grass and other 

 vegetation. Experience has shown that this is a rather characteristic feature of 

 the species. In this stage the plant often has the appearance of mere "grass" 

 and may readily escape notice. 



