1912.] NATURAL SCIENCES OF PHILADELPHIA. 527 



Insert: 



62a. Carex normalis Mackenzie. 8 



Frequent or local on dry open barren. 

 Delaware. — Bear Hill; Mineral Hill; Williamson. 

 Chester. — Cedar Barrens; West Chester (B. Long). 



— Nottingham Barrens. 



Insert : 

 62b. Carex hormathodes richii Fernald. 



Moist soil along stream. It seems unnatural to consider this 

 inland plant a variety of Carex hormathodes, characteristic of the 

 salt marshes along the coast, but in the material at hand I cannot 

 feel confident in separating them. Richii appears to differ in its 

 smaller, broader perigynia, at maturity less prominently nerved, 

 its achene relatively more turgid, dull, not glistening as in horma- 

 thodes. 



Chester. — Serpentine Ridge. 



*63. Carex bicknellii Britton. Read: 



Local on dry open barrens. 



Delaware.— Bear Hill; Williamson; Glen Riddle. 

 Chester. — Cedar Barrens; West Chester; Brinton's Quarry. 

 Newcastle. — Centerville (A. Commons). 



64. Juncus effusus L. Read: 



Common in Serpentine .swamps. 



Delaware. — Williamson. 



Chester. — Paoli; Cedar Barrens; West Chester. 



— Nottingham Barrens. 



165. Juncus tenuis Willd. Add: 



Delaware. — Mineral Hill. 



Chester. — Paoli; Serpentine Ridge (B. Long). 



f66. Juncus secundus Beauv. Add: 

 Newcastle. — Centerville (A. Commons). 



Insert: 

 |66a. Juncus dichotomus platyphyllus Wiegand. 



*BuU. Ton. Bot. Club, XXXVII (1910), 244. 



